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Climate and Average Weather Year Round at Cognac-Châteaubernard Air Base France

At Cognac-Châteaubernard Air Base, the summers are warm, the winters are very cold and windy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 37°F to 80°F and is rarely below 26°F or above 91°F.

Based on the tourism score, the best time of year to visit Cognac-Châteaubernard Air Base for warm-weather activities is from mid June to mid September.

Climate at Cognac-Châteaubernard Air Base

coldcoolcomfortablewarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow72%72%33%33%clearovercastprecipitation: 2.6 inprecipitation: 2.6 in1.3 in1.3 inmuggy: 10%muggy: 10%0%0%drydrytourism score: 7.5tourism score: 7.50.60.6
Cognac-Châteaubernard Air Base weather by month. Click on each chart for more information.

The warm season lasts for 3.2 months, from June 10 to September 15, with an average daily high temperature above 74°F. The hottest month of the year at Cognac-Châteaubernard Air Base is July, with an average high of 79°F and low of 60°F.

The cool season lasts for 3.6 months, from November 17 to March 3, with an average daily high temperature below 55°F. The coldest month of the year at Cognac-Châteaubernard Air Base is January, with an average low of 37°F and high of 49°F.

Average High and Low Temperature at Cognac-Châteaubernard Air Base

Average High and Low Temperature at Cognac-Châteaubernard Air BasewarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 750°FFeb 750°FAug 280°FAug 280°F37°F37°F60°F60°FJun 1074°FJun 1074°FSep 1574°FSep 1574°FNov 1755°FNov 1755°F56°F56°F55°F55°F42°F42°F39°F39°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 49°F51°F57°F62°F69°F75°F79°F79°F74°F65°F55°F50°F
Temp. 43°F44°F49°F53°F60°F66°F70°F69°F64°F57°F49°F44°F
Low 37°F37°F41°F45°F51°F56°F60°F59°F55°F49°F42°F38°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature at Cognac-Châteaubernard Air Base

Average Hourly Temperature at Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowvery coldvery coldvery coldcoldcoldcoolcomfortablecomfortablewarmvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Vancouver, Washington, United States (5,224 miles away); Caleta Olivia, Argentina (7,565 miles); and Sierra Grande, Argentina (7,244 miles) are the far-away foreign places with temperatures most similar to Cognac-Châteaubernard Air Base (view comparison).

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At Cognac-Châteaubernard Air Base, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Cognac-Châteaubernard Air Base begins around May 26 and lasts for 4.3 months, ending around October 3.

The clearest month of the year at Cognac-Châteaubernard Air Base is July, during which on average the sky is clear, mostly clear, or partly cloudy 70% of the time.

The cloudier part of the year begins around October 3 and lasts for 7.7 months, ending around May 26.

The cloudiest month of the year at Cognac-Châteaubernard Air Base is January, during which on average the sky is overcast or mostly cloudy 65% of the time.

Cloud Cover Categories at Cognac-Châteaubernard Air Base

Cloud Cover Categories at Cognac-Châteaubernard Air BaseclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1972%Jul 1972%Jan 533%Jan 533%May 2652%May 2652%Oct 353%Oct 353%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 65%58%54%51%49%41%30%34%42%51%59%63%
Clearer 35%42%46%49%51%59%70%66%58%49%41%37%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Cognac-Châteaubernard Air Base varies throughout the year.

The wetter season lasts 8.8 months, from September 19 to June 11, with a greater than 25% chance of a given day being a wet day. The month with the most wet days at Cognac-Châteaubernard Air Base is December, with an average of 9.7 days with at least 0.04 inches of precipitation.

The drier season lasts 3.2 months, from June 11 to September 19. The month with the fewest wet days at Cognac-Châteaubernard Air Base is August, with an average of 5.6 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Cognac-Châteaubernard Air Base is November, with an average of 9.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 32% on December 29.

Daily Chance of Precipitation at Cognac-Châteaubernard Air Base

Daily Chance of Precipitation at Cognac-Châteaubernard Air BasewetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 2933%Dec 2933%Aug 2617%Aug 2617%Jun 1125%Jun 1125%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 9.3d7.5d7.6d8.7d9.3d7.2d6.0d5.6d7.0d9.2d9.3d9.6d
Snow 0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d
Any 9.5d7.7d7.7d8.7d9.3d7.2d6.0d5.6d7.0d9.2d9.3d9.7d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Cognac-Châteaubernard Air Base experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Cognac-Châteaubernard Air Base. The month with the most rain at Cognac-Châteaubernard Air Base is November, with an average rainfall of 2.6 inches.

The month with the least rain at Cognac-Châteaubernard Air Base is July, with an average rainfall of 1.3 inches.

Average Monthly Rainfall at Cognac-Châteaubernard Air Base

Average Monthly Rainfall at Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inNov 82.6 inNov 82.6 inJul 221.3 inJul 221.3 inApr 282.0 inApr 282.0 inMar 111.6 inMar 111.6 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 2.2″1.8″1.6″2.0″2.0″1.7″1.3″1.4″2.0″2.5″2.6″2.5″

The length of the day at Cognac-Châteaubernard Air Base varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 41 minutes of daylight; the longest day is June 20, with 15 hours, 42 minutes of daylight.

Hours of Daylight and Twilight at Cognac-Châteaubernard Air Base

Hours of Daylight and Twilight at Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 42 minJun 2015 hr, 42 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 228 hr, 41 minDec 218 hr, 41 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 9.1h10.4h12.0h13.6h14.9h15.6h15.3h14.0h12.5h10.9h9.5h8.8h

The earliest sunrise is at 6:11 AM on June 15, and the latest sunrise is 2 hours, 31 minutes later at 8:41 AM on January 2. The earliest sunset is at 5:17 PM on December 10, and the latest sunset is 4 hours, 38 minutes later at 9:54 PM on June 26.

Daylight saving time (DST) is observed at Cognac-Châteaubernard Air Base during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time at Cognac-Châteaubernard Air Base

Sunrise & Sunset with Twilight and Daylight Saving Time at Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMJun 156:11 AMJun 156:11 AM9:54 PMJun 269:54 PMJun 26Dec 105:17 PMDec 105:17 PM8:41 AMJan 28:41 AMJan 2Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth at Cognac-Châteaubernard Air Base

Solar Elevation and Azimuth at Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM00001010102020203030304040506000010101010202020303040405050602168NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases at Cognac-Châteaubernard Air Base

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level at Cognac-Châteaubernard Air Base, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 5% of 5% throughout.

Humidity Comfort Levels at Cognac-Châteaubernard Air Base

Humidity Comfort Levels at Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 10%Mar 10%Aug 410%Aug 410%NowNowhumidhumidcomfortablecomfortabledrydrymuggymuggy
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.1d0.9d2.1d2.6d0.7d0.1d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Cognac-Châteaubernard Air Base experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.7 months, from October 7 to April 30, with average wind speeds of more than 9.1 miles per hour. The windiest month of the year at Cognac-Châteaubernard Air Base is January, with an average hourly wind speed of 10.2 miles per hour.

The calmer time of year lasts for 5.3 months, from April 30 to October 7. The calmest month of the year at Cognac-Châteaubernard Air Base is August, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed at Cognac-Châteaubernard Air Base

Average Wind Speed at Cognac-Châteaubernard Air BasewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphJan 3010.4 mphJan 3010.4 mphAug 47.7 mphAug 47.7 mphOct 79.1 mphOct 79.1 mphApr 309.1 mphApr 309.1 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 10.210.210.09.78.88.48.27.98.49.39.710.2

The predominant average hourly wind direction at Cognac-Châteaubernard Air Base varies throughout the year.

The wind is most often from the west for 3.1 weeks, from February 1 to February 23; for 1.5 months, from March 2 to April 16; and for 5.4 months, from April 22 to October 3, with a peak percentage of 46% on July 10. The wind is most often from the north for 1.1 weeks, from February 23 to March 2 and for 6.0 days, from April 16 to April 22, with a peak percentage of 30% on April 20. The wind is most often from the south for 3.9 months, from October 3 to February 1, with a peak percentage of 37% on January 1.

Wind Direction at Cognac-Châteaubernard Air Base

Wind Direction at Cognac-Châteaubernard Air BaseSWWWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Cognac-Châteaubernard Air Base is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.0 months, from June 26 to September 27, with an average temperature above 65°F. The month of the year at Cognac-Châteaubernard Air Base with the warmest water is August, with an average temperature of 69°F.

The time of year with cooler water lasts for 4.0 months, from December 14 to April 13, with an average temperature below 54°F. The month of the year at Cognac-Châteaubernard Air Base with the coolest water is February, with an average temperature of 50°F.

Average Water Temperature at Cognac-Châteaubernard Air Base

Average Water Temperature at Cognac-Châteaubernard Air BasewarmcoolJanFebMarAprMayJunJulAugSepOctNovDec45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FAug 869°FAug 869°F50°FFeb 2050°FFeb 20Jun 2665°FJun 2665°FSep 2765°FSep 2765°FDec 1454°FDec 1454°FApr 1354°FApr 1354°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 51°F50°F51°F54°F59°F64°F68°F69°F67°F63°F58°F54°F

To characterize how pleasant the weather is at Cognac-Châteaubernard Air Base throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Cognac-Châteaubernard Air Base for general outdoor tourist activities is from mid June to mid September, with a peak score in the third week of July.

Tourism Score at Cognac-Châteaubernard Air Base

Tourism Score at Cognac-Châteaubernard Air Basebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.57.50.60.6NowNowtemperaturetemperature precipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Cognac-Châteaubernard Air Base for hot-weather activities is from early July to mid August, with a peak score in the last week of July.

Beach/Pool Score at Cognac-Châteaubernard Air Base

Beach/Pool Score at Cognac-Châteaubernard Air Basebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.36.30.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Cognac-Châteaubernard Air Base typically lasts for 8.2 months (252 days), from around March 12 to around November 18, rarely starting before February 12 or after April 7, and rarely ending before October 25 or after December 22.

Time Spent in Various Temperature Bands and the Growing Season at Cognac-Châteaubernard Air Base

Time Spent in Various Temperature Bands and the Growing Season at Cognac-Châteaubernard Air Basegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 1250%Mar 1250%Nov 1850%Nov 1890%Apr 790%Apr 790%Oct 2590%Oct 2510%Feb 1210%Feb 1210%Dec 2210%Dec 223%Jan 143%Jan 14Jul 18100%Jul 18100%NowNowvery coldcoldcoolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms at Cognac-Châteaubernard Air Base should appear around March 18, only rarely appearing before February 28 or after April 9.

Growing Degree Days at Cognac-Châteaubernard Air Base

Growing Degree Days at Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FMar 1889°FMar 1889°FJun 19900°FJun 19900°FAug 61,800°FAug 61,800°FDec 313,058°FDec 313,058°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.3 months, from May 10 to August 20, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year at Cognac-Châteaubernard Air Base is July, with an average of 7.0 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 17, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest month of the year at Cognac-Châteaubernard Air Base is December, with an average of 1.2 kWh.

Average Daily Incident Shortwave Solar Energy at Cognac-Châteaubernard Air Base

Average Daily Incident Shortwave Solar Energy at Cognac-Châteaubernard Air BasebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 67.1 kWhJul 67.1 kWhDec 251.2 kWhDec 251.2 kWhMay 105.9 kWhMay 105.9 kWhAug 205.9 kWhAug 205.9 kWhOct 272.3 kWhOct 272.3 kWhFeb 172.3 kWhFeb 172.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 1.42.33.75.06.16.97.06.14.62.91.71.2

For the purposes of this report, the geographical coordinates of Cognac-Châteaubernard Air Base are 45.658 deg latitude, -0.317 deg longitude, and 75 ft elevation.

The topography within 2 miles of Cognac-Châteaubernard Air Base contains only modest variations in elevation, with a maximum elevation change of 190 feet and an average elevation above sea level of 84 feet. Within 10 miles contains only modest variations in elevation (538 feet). Within 50 miles contains significant variations in elevation (1,204 feet).

The area within 2 miles of Cognac-Châteaubernard Air Base is covered by cropland (67%) and artificial surfaces (33%), within 10 miles by cropland (81%) and trees (11%), and within 50 miles by cropland (58%) and trees (21%).

This report illustrates the typical weather at Cognac-Châteaubernard Air Base, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Cognac-Châteaubernard Air Base has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Angoulême – Cognac International Airport, Niort-Souché, Bordeaux–Mérignac Airport, La Rochelle – Île de Ré Airport, Poitiers–Biard Airport, Bergerac-Roumanière, Cazaux, and La Roche-sur-Yon - Les Ajoncs.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.