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September Weather at Bergerac-Roumanière France

Daily high temperatures decrease by 7°F, from 78°F to 71°F, rarely falling below 62°F or exceeding 88°F.

Daily low temperatures decrease by 5°F, from 54°F to 49°F, rarely falling below 41°F or exceeding 62°F.

For reference, on August 3, the hottest day of the year, temperatures at Bergerac-Roumanière typically range from 58°F to 82°F, while on February 7, the coldest day of the year, they range from 34°F to 51°F.

Average High and Low Temperature in September at Bergerac-Roumanière

Average High and Low Temperature in September at Bergerac-RoumanièreSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303030°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°FAugOctSep 178°FSep 178°F54°F54°FSep 3071°FSep 3071°F49°F49°FSep 1176°FSep 1176°F52°F52°FSep 2174°FSep 2174°F51°F51°F
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.

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

Average Hourly Temperature in September at Bergerac-Roumanière

Average Hourly Temperature in September at Bergerac-RoumanièreSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOctcoldcoldcoolcomfortablewarmcomfortable
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 (5,295 miles away) and Mount Beauty, Victoria, Australia (10,631 miles) are the far-away foreign places with temperatures most similar to Bergerac-Roumanière (view comparison).

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The month of September at Bergerac-Roumanière experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 36% to 45%.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 64% of the time.

For reference, on January 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.

Cloud Cover Categories in September at Bergerac-Roumanière

Cloud Cover Categories in September at Bergerac-RoumanièreSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctSep 164%Sep 164%Sep 3055%Sep 3055%Sep 1162%Sep 1162%Sep 2157%Sep 2157%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Bergerac-Roumanière, the chance of a wet day over the course of September is rapidly increasing, starting the month at 21% and ending it at 27%.

For reference, the year's highest daily chance of a wet day is 33% on May 8, and its lowest chance is 18% on August 24.

Probability of Precipitation in September at Bergerac-Roumanière

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).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during September at Bergerac-Roumanière is increasing, starting the month at 1.7 inches, when it rarely exceeds 3.3 inches or falls below 0.6 inches, and ending the month at 2.2 inches, when it rarely exceeds 4.4 inches or falls below 0.6 inches.

Average Monthly Rainfall in September at Bergerac-Roumanière

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.

Over the course of September at Bergerac-Roumanière, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 29 minutes, implying an average daily decrease of 3 minutes, 4 seconds, and weekly decrease of 21 minutes, 29 seconds.

The shortest day of the month is September 30, with 11 hours, 45 minutes of daylight and the longest day is September 1, with 13 hours, 14 minutes of daylight.

Hours of Daylight and Twilight in September at Bergerac-Roumanière

Hours of Daylight and Twilight in September at Bergerac-RoumanièreSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 9 minSep 2212 hr, 9 minnightnightdaydaySep 113 hr, 14 minSep 113 hr, 14 min
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.

The earliest sunrise of the month at Bergerac-Roumanière is 7:20 AM on September 1 and the latest sunrise is 35 minutes later at 7:55 AM on September 30.

The latest sunset is 8:34 PM on September 1 and the earliest sunset is 54 minutes earlier at 7:39 PM on September 30.

Daylight saving time is observed at Bergerac-Roumanière during 2024, but it neither starts nor ends during September, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:11 AM and sets 15 hours, 36 minutes later, at 9:47 PM, while on December 21, the shortest day of the year, it rises at 8:32 AM and sets 8 hours, 47 minutes later, at 5:19 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in September at Bergerac-Roumanière

Sunrise & Sunset with Twilight and Daylight Saving Time in September at Bergerac-RoumanièreSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMAugOct7:20 AM7:20 AMSep 18:34 PMSep 18:34 PM7:55 AM7:55 AMSep 307:39 PMSep 307:39 PM7:32 AM7:32 AMSep 118:15 PMSep 118:15 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of September. 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 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 in September at Bergerac-Roumanière

Solar Elevation and Azimuth in September at Bergerac-RoumanièreSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct0010102020303040405000101020203030405060
northeastsouthwest
Solar elevation and azimuth over the course of September 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 September 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in September at Bergerac-Roumanière

Moon Rise, Set & Phases in September at Bergerac-RoumanièreSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 41:14 PMAug 41:14 PMAug 198:26 PMAug 198:26 PMSep 33:56 AMSep 33:56 AMSep 184:35 AMSep 184:35 AMOct 28:50 PMOct 28:50 PMOct 171:27 PMOct 171:27 PM6:19 AM6:19 AM9:47 PM9:47 PM9:11 PM9:11 PM7:38 AM7:38 AM7:31 AM7:31 AM8:50 PM8:50 PM7:56 PM7:56 PM7:53 AM7:53 AM7:30 AM7:30 AM7:28 PM7:28 PM6:38 PM6:38 PM8:07 AM8:07 AM
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.
Sep 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
3%5:18 AMENE8:15 PMWNW-12:51 PMS248,791 mi
2
0%6:26 AMENE8:33 PMWNW-1:34 PMS250,269 mi
3
0%7:31 AMENE8:50 PMW-2:14 PMS251,394 mi
4
2%8:35 AME9:05 PMW-2:52 PMS252,126 mi
5
6%9:38 AME9:21 PMW-3:31 PMS252,406 mi
6
11%10:41 AMESE9:37 PMWSW-4:10 PMS252,160 mi
7
18%11:45 AMESE9:55 PMWSW-4:51 PMS251,313 mi
8
26%12:52 PMESE10:18 PMWSW-5:35 PMS249,802 mi
9
35%2:00 PMSE10:45 PMSW-6:22 PMS247,596 mi
10
45%3:08 PMSE11:22 PMSW-7:15 PMS244,712 mi
11
50%4:13 PMSE--8:11 PMS241,238 mi
12
66%-12:09 AMSW5:11 PMSE9:10 PMS237,343 mi
13
76%-1:10 AMSW5:59 PMSE10:11 PMS233,285 mi
14
85%-2:22 AMSW6:38 PMSE11:10 PMS229,393 mi
15
90%-3:43 AMWSW7:09 PMESE--
16
93%-5:06 AMWSW7:34 PMESE12:07 AMS226,031 mi
17
98%-6:30 AMWSW7:56 PME1:01 AMS223,545 mi
18
100%-7:53 AMW8:17 PME1:53 AMS222,202 mi
19
99%-9:17 AMW8:38 PMENE2:43 AMS222,141 mi
20
94%-10:41 AMWNW9:02 PMENE3:35 AMS223,348 mi
21
87%-12:05 PMWNW9:31 PMENE4:28 AMS225,657 mi
22
78%-1:28 PMNW10:06 PMNE5:23 AMS228,792 mi
23
67%-2:45 PMNW10:51 PMNE6:21 AMS232,418 mi
24
50%-3:51 PMNW11:46 PMNE7:19 AMS236,202 mi
25
45%-4:45 PMNW-8:17 AMS239,856 mi
26
34%12:50 AMNE5:25 PMNW-9:12 AMS243,173 mi
27
25%1:59 AMNE5:57 PMWNW-10:03 AMS246,021 mi
28
17%3:09 AMENE6:21 PMWNW-10:50 AMS248,344 mi
29
10%4:17 AMENE6:40 PMWNW-11:33 AMS250,134 mi
30
5%5:23 AMENE6:57 PMW-12:14 PMS251,413 mi

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 chance that a given day will be muggy at Bergerac-Roumanière is decreasing during September, falling from 9% to 2% over the course of the month.

For reference, on August 4, the muggiest day of the year, there are muggy conditions 16% of the time, while on November 12, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in September at Bergerac-Roumanière

Humidity Comfort Levels in September at Bergerac-RoumanièreSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 19%Sep 19%Sep 302%Sep 302%Sep 115%Sep 115%Sep 213%Sep 213%muggymuggyhumidhumidcomfortablecomfortabledrydry
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.

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 Bergerac-Roumanière is gradually increasing during September, increasing from 7.2 miles per hour to 7.9 miles per hour over the course of the month.

For reference, on April 2, the windiest day of the year, the daily average wind speed is 9.3 miles per hour, while on August 7, the calmest day of the year, the daily average wind speed is 6.9 miles per hour.

Average Wind Speed in September at Bergerac-Roumanière

Average Wind Speed in September at Bergerac-RoumanièreSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphAugOctSep 17.2 mphSep 17.2 mphSep 307.9 mphSep 307.9 mphSep 117.4 mphSep 117.4 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction at Bergerac-Roumanière during September is predominantly out of the west from September 1 to September 6 and the north from September 6 to September 30.

Wind Direction in September at Bergerac-Roumanière

Wind Direction in September at Bergerac-RoumanièreWNSSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOctwestsouthnortheast
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).

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 Bergerac-Roumanière typically lasts for 7.0 months (213 days), from around April 6 to around November 4, rarely starting before March 16 or after April 28, and rarely ending before October 13 or after December 13.

The month of September at Bergerac-Roumanière is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in September at Bergerac-Roumanière

Time Spent in Various Temperature Bands and the Growing Season in September at Bergerac-Roumanièregrowing seasonSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOct100%Sep 16100%Sep 1690%Oct 1390%Oct 13very 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.

The average accumulated growing degree days at Bergerac-Roumanière are increasing during September, increasing by 383°F, from 2,273°F to 2,657°F, over the course of the month.

Growing Degree Days in September at Bergerac-Roumanière

Growing Degree Days in September at Bergerac-RoumanièreSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302,000°F2,000°F2,100°F2,100°F2,200°F2,200°F2,300°F2,300°F2,400°F2,400°F2,500°F2,500°F2,600°F2,600°F2,700°F2,700°F2,800°F2,800°F2,900°F2,900°FAugOctSep 12,273°FSep 12,273°FSep 302,657°FSep 302,657°FSep 112,425°FSep 112,425°F
The average growing degree days accumulated over the course of September, 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 at Bergerac-Roumanière is rapidly decreasing during September, falling by 1.6 kWh, from 5.4 kWh to 3.8 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in September at Bergerac-Roumanière

Average Daily Incident Shortwave Solar Energy in September at Bergerac-RoumanièreSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAugOctSep 15.4 kWhSep 15.4 kWhSep 303.8 kWhSep 303.8 kWhSep 114.9 kWhSep 114.9 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Bergerac-Roumanière are 44.825 deg latitude, 0.519 deg longitude, and 164 ft elevation.

The topography within 2 miles of Bergerac-Roumanière contains only modest variations in elevation, with a maximum elevation change of 318 feet and an average elevation above sea level of 159 feet. Within 10 miles contains only modest variations in elevation (627 feet). Within 50 miles contains significant variations in elevation (1,450 feet).

The area within 2 miles of Bergerac-Roumanière is covered by cropland (80%) and artificial surfaces (13%), within 10 miles by cropland (60%) and trees (28%), and within 50 miles by cropland (52%) and trees (36%).

This report illustrates the typical weather at Bergerac-Roumanière, 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

Bergerac-Roumanière 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 Agen-la-Garenne, Angoulême – Cognac International Airport, Brive-La Roche Airport (historical), Auch-Lamothe, Montauban Airport, Cognac-Châteaubernard Air Base, Limoges-Bellegarde, and Bordeaux–Mérignac 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.

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