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Climate and Average Weather Year Round at Annecy-Meythet France

At Annecy-Meythet, the summers are warm, the winters are very cold and wet, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 28°F to 79°F and is rarely below 19°F or above 87°F.

Based on the tourism score, the best time of year to visit Annecy-Meythet for warm-weather activities is from late June to early September.

Climate at Annecy-Meythet

very coldcoldcoolcomfortablewarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow69%69%42%42%overcastclearprecipitation: 3.5 inprecipitation: 3.5 in2.6 in2.6 inmuggy: 3%muggy: 3%0%0%drydrytourism score: 7.2tourism score: 7.20.00.0
Annecy-Meythet weather by month. Click on each chart for more information.

The warm season lasts for 3.2 months, from June 4 to September 10, with an average daily high temperature above 71°F. The hottest month of the year at Annecy-Meythet is July, with an average high of 78°F and low of 57°F.

The cold season lasts for 3.4 months, from November 17 to February 29, with an average daily high temperature below 48°F. The coldest month of the year at Annecy-Meythet is January, with an average low of 28°F and high of 40°F.

Average High and Low Temperature at Annecy-Meythet

Average High and Low Temperature at Annecy-MeythetwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1540°FJan 1540°FAug 379°FAug 379°F28°F28°F58°F58°FJun 471°FJun 471°FSep 1071°FSep 1071°FNov 1748°FNov 1748°FFeb 2948°FFeb 2948°F51°F51°F52°F52°F34°F34°F31°F31°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 40°F44°F53°F59°F67°F73°F78°F77°F69°F60°F49°F42°F
Temp. 34°F36°F43°F50°F57°F64°F68°F67°F60°F52°F41°F35°F
Low 28°F29°F34°F40°F47°F53°F57°F56°F51°F43°F35°F29°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 Annecy-Meythet

Average Hourly Temperature at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingvery coldvery coldcoldcoldcoolcomfortablewarmfreezingcomfortable
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.

Foscoe, North Carolina, United States (4,398 miles away) is the far-away foreign place with temperatures most similar to Annecy-Meythet (view comparison).

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At Annecy-Meythet, 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 Annecy-Meythet begins around June 16 and lasts for 3.0 months, ending around September 17.

The clearest month of the year at Annecy-Meythet is July, during which on average the sky is clear, mostly clear, or partly cloudy 67% of the time.

The cloudier part of the year begins around September 17 and lasts for 9.0 months, ending around June 16.

The cloudiest month of the year at Annecy-Meythet is November, during which on average the sky is overcast or mostly cloudy 57% of the time.

Cloud Cover Categories at Annecy-Meythet

Cloud Cover Categories at Annecy-MeythetclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2069%Jul 2069%Dec 3042%Dec 3042%Jun 1655%Jun 1655%Sep 1756%Sep 1756%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 55%53%54%54%56%45%33%36%45%54%57%57%
Clearer 45%47%46%46%44%55%67%64%55%46%43%43%

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

The wetter season lasts 7.9 months, from April 28 to December 24, with a greater than 32% chance of a given day being a wet day. The month with the most wet days at Annecy-Meythet is May, with an average of 11.2 days with at least 0.04 inches of precipitation.

The drier season lasts 4.1 months, from December 24 to April 28. The month with the fewest wet days at Annecy-Meythet is August, with an average of 8.6 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 Annecy-Meythet is May, with an average of 11.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 39% on May 24.

Daily Chance of Precipitation at Annecy-Meythet

Daily Chance of Precipitation at Annecy-MeythetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%May 2439%May 2439%Mar 425%Mar 425%Dec 2432%Dec 2432%NowNowrainmixedsnow
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 7.0d6.5d8.2d8.9d11.2d10.5d9.3d8.6d8.6d9.7d8.3d7.7d
Mixed 1.8d1.4d0.6d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.6d1.3d
Snow 0.7d0.5d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.3d0.7d
Any 9.4d8.3d8.8d9.2d11.2d10.5d9.3d8.6d8.6d9.8d9.2d9.8d

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. Annecy-Meythet experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Annecy-Meythet. The month with the most rain at Annecy-Meythet is October, with an average rainfall of 3.4 inches.

The month with the least rain at Annecy-Meythet is March, with an average rainfall of 2.6 inches.

Average Monthly Rainfall at Annecy-Meythet

Average Monthly Rainfall at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inOct 113.5 inOct 113.5 inMar 82.5 inMar 82.5 inMay 263.4 inMay 263.4 inDec 153.2 inDec 153.2 inAug 42.6 inAug 42.6 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 2.9″2.7″2.6″2.8″3.3″3.2″2.7″2.6″3.2″3.4″3.2″3.1″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Annecy-Meythet experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 3.6 months, from November 16 to March 4, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Annecy-Meythet is January, with an average snowfall of 2.6 inches.

The snowless period of the year lasts for 8.4 months, from March 4 to November 16. The least snow falls around July 29, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall at Annecy-Meythet

Average Monthly Snowfall at Annecy-MeythetsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inJan 22.7 inJan 22.7 inJul 290.0 inJul 290.0 inNov 161.0 inNov 161.0 inMar 41.0 inMar 41.0 inNowNow
The average snowfall (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 rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 2.6″1.8″0.5″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.9″2.5″

The length of the day at Annecy-Meythet varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 39 minutes of daylight; the longest day is June 20, with 15 hours, 45 minutes of daylight.

Hours of Daylight and Twilight at Annecy-Meythet

Hours of Daylight and Twilight at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 45 minJun 2015 hr, 45 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 228 hr, 39 minDec 218 hr, 39 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 9.1h10.4h12.0h13.6h15.0h15.7h15.3h14.1h12.5h10.9h9.5h8.7h

The earliest sunrise is at 5:44 AM on June 15, and the latest sunrise is 2 hours, 33 minutes later at 8:17 AM on January 2. The earliest sunset is at 4:50 PM on December 9, and the latest sunset is 4 hours, 40 minutes later at 9:30 PM on June 26.

Daylight saving time (DST) is observed at Annecy-Meythet 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 Annecy-Meythet

Sunrise & Sunset with Twilight and Daylight Saving Time at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:44 AMJun 155:44 AM9:30 PMJun 269:30 PMJun 26Dec 94:50 PMDec 94:50 PM8:17 AMJan 28:17 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 Annecy-Meythet

Solar Elevation and Azimuth at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec12 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 Annecy-Meythet

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 Annecy-Meythet, 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 2% of 2% throughout.

Humidity Comfort Levels at Annecy-Meythet

Humidity Comfort Levels at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 40%Mar 40%Jul 233%Jul 233%NowNowcomfortablecomfortabledrydryhumidhumid
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 0.0d0.0d0.0d0.0d0.0d0.3d0.9d0.7d0.1d0.0d0.0d0.0d

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 Annecy-Meythet does not vary significantly over the course of the year, remaining within 0.4 miles per hour of 5.2 miles per hour throughout.

Average Wind Speed at Annecy-Meythet

Average Wind Speed at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mphApr 25.6 mphApr 25.6 mphAug 114.7 mphAug 114.7 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) 5.15.25.45.55.25.15.04.84.95.04.95.1

The predominant average hourly wind direction at Annecy-Meythet varies throughout the year.

The wind is most often from the north for 1.4 months, from March 28 to May 10 and for 2.1 weeks, from August 31 to September 15, with a peak percentage of 36% on April 18. The wind is most often from the west for 3.7 months, from May 10 to August 31, with a peak percentage of 36% on June 9. The wind is most often from the south for 6.4 months, from September 15 to March 28, with a peak percentage of 46% on January 1.

Wind Direction at Annecy-Meythet

Wind Direction at Annecy-MeythetSNWNSJanFebMarAprMayJunJulAugSepOctNovDec0%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).

To characterize how pleasant the weather is at Annecy-Meythet 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 Annecy-Meythet for general outdoor tourist activities is from late June to early September, with a peak score in the first week of August.

Tourism Score at Annecy-Meythet

Tourism Score at Annecy-Meythetbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.27.20.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism 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 Annecy-Meythet for hot-weather activities is from early July to mid August, with a peak score in the first week of August.

Beach/Pool Score at Annecy-Meythet

Beach/Pool Score at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.45.40.00.0NowNowtemperaturetemperature 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 Annecy-Meythet typically lasts for 6.5 months (201 days), from around April 12 to around October 29, rarely starting before March 23 or after May 1, and rarely ending before October 10 or after November 18.

Time Spent in Various Temperature Bands and the Growing Season at Annecy-Meythet

Time Spent in Various Temperature Bands and the Growing Season at Annecy-Meythetgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1250%Apr 1250%Oct 2950%Oct 2990%May 190%May 190%Oct 1090%Oct 1010%Mar 2310%Mar 2310%Nov 1810%Nov 180%Dec 280%Dec 28Jul 26100%Jul 26100%freezingvery coldcoldcoolcomfortablewarm
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 Annecy-Meythet should appear around April 15, only rarely appearing before April 2 or after April 30.

Growing Degree Days at Annecy-Meythet

Growing Degree Days at Annecy-MeythetJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 1590°FApr 1590°FJul 5900°FJul 5900°FAug 261,800°FAug 261,800°FDec 312,327°FDec 312,327°F
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 3.2 months, from May 13 to August 18, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year at Annecy-Meythet is July, with an average of 7.0 kWh.

The darker period of the year lasts for 3.5 months, from October 27 to February 13, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest month of the year at Annecy-Meythet is December, with an average of 1.4 kWh.

Average Daily Incident Shortwave Solar Energy at Annecy-Meythet

Average Daily Incident Shortwave Solar Energy at Annecy-MeythetbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 47.1 kWhJul 47.1 kWhDec 231.3 kWhDec 231.3 kWhMay 136.0 kWhMay 136.0 kWhAug 186.0 kWhAug 186.0 kWhOct 272.5 kWhOct 272.5 kWhFeb 132.5 kWhFeb 132.5 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) 1.72.63.95.16.06.97.06.04.53.01.81.4

For the purposes of this report, the geographical coordinates of Annecy-Meythet are 45.931 deg latitude, 6.106 deg longitude, and 1,512 ft elevation.

The topography within 2 miles of Annecy-Meythet contains very significant variations in elevation, with a maximum elevation change of 965 feet and an average elevation above sea level of 1,565 feet. Within 10 miles contains very significant variations in elevation (5,095 feet). Within 50 miles also contains extreme variations in elevation (15,118 feet).

The area within 2 miles of Annecy-Meythet is covered by artificial surfaces (67%) and grassland (19%), within 10 miles by trees (38%) and cropland (29%), and within 50 miles by trees (42%) and cropland (19%).

This report illustrates the typical weather at Annecy-Meythet, 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

Annecy-Meythet 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 Aéroport Genève-Cointrin, Chambéry Airport, Ambérieu, Grenoble-Isère Airport, Lyon–Saint Exupéry Airport, Lyon-Bron Airport, Sion, and Sion Airport.

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.