Compare the Climate and Weather in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac Airport

This page lets you compare and contrast the weather and climate in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac Airport year round.

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Average High and Low Temperature

Compare the Average High and Low Temperature in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F62397649603780344731NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Semussac 49°F51°F56°F60°F66°F72°F75°F76°F71°F64°F56°F50°F
Cognac-Châteaubernard Air Base 49°F51°F57°F62°F69°F75°F79°F79°F74°F65°F55°F50°F
La Rochelle – Île de Ré Airport 49°F50°F55°F60°F66°F71°F75°F76°F71°F64°F55°F50°F
Bordeaux–Mérignac Airport 50°F53°F58°F63°F69°F75°F80°F80°F75°F66°F57°F51°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Semussac 40°F40°F43°F47°F53°F58°F61°F61°F57°F52°F45°F41°F
Cognac-Châteaubernard Air Base 37°F37°F41°F45°F51°F56°F60°F59°F55°F49°F42°F38°F
La Rochelle – Île de Ré Airport 39°F39°F42°F46°F52°F57°F61°F61°F56°F51°F44°F40°F
Bordeaux–Mérignac Airport 37°F38°F41°F46°F52°F57°F60°F60°F55°F50°F43°F39°F

Semussac

Average Hourly Temperature in SemussacJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldcoldcoldcoolcomfortablevery coldwarmcomfortablevery cold

Cognac-Châteaubernard Air Base

Average Hourly Temperature in Cognac-Châteaubernard Air BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolwarmcomfortablevery coldvery coldcomfortable

La Rochelle – Île de Ré Airport

Average Hourly Temperature in La Rochelle – Île de Ré AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldcoldcoldcoolcomfortablevery coldvery coldcomfortablevery cold

Bordeaux–Mérignac Airport

Average Hourly Temperature in Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolwarmcomfortablevery coldvery coldcomfortable
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.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%723733NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Semussac 39%45%48%51%52%60%71%67%59%50%44%41%
Cognac-Châteaubernard Air Base 35%42%46%49%51%59%70%66%58%49%41%37%
La Rochelle – Île de Ré Airport 39%44%47%51%51%59%69%66%58%49%44%40%
Bordeaux–Mérignac Airport 38%44%48%50%51%60%73%68%59%50%43%40%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%34161534NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseSemussacSemussac
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Semussac 9.7d7.7d7.5d8.4d8.7d6.6d5.4d5.3d6.9d9.5d9.7d10.0d
Cognac-Châteaubernard Air Base 9.5d7.7d7.7d8.7d9.3d7.2d6.0d5.6d7.0d9.2d9.3d9.7d
La Rochelle – Île de Ré Airport 9.9d7.7d7.1d7.9d8.0d6.1d5.0d4.8d6.5d9.6d10.0d10.4d
Bordeaux–Mérignac Airport 9.7d7.9d7.6d8.6d8.9d7.2d5.5d5.4d7.2d8.9d9.7d9.7d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in2.71.22.8NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Semussac 2.3″1.8″1.5″1.8″1.8″1.5″1.2″1.3″1.9″2.5″2.6″2.5″
Cognac-Châteaubernard Air Base 2.2″1.8″1.6″2.0″2.0″1.7″1.3″1.4″2.0″2.5″2.6″2.5″
La Rochelle – Île de Ré Airport 2.3″1.8″1.5″1.7″1.6″1.3″1.1″1.1″1.8″2.6″2.6″2.5″
Bordeaux–Mérignac Airport 2.4″2.0″1.6″2.0″1.9″1.7″1.2″1.3″2.1″2.6″2.8″2.6″

Hours of Daylight

Compare the Hours of Daylight in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr15.78.7NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Semussac 9.2h10.4h12.0h13.6h14.9h15.6h15.3h14.0h12.5h10.9h9.5h8.8h
Cognac-Châteaubernard Air Base 9.1h10.4h12.0h13.6h14.9h15.6h15.3h14.0h12.5h10.9h9.5h8.8h
La Rochelle – Île de Ré Airport 9.1h10.4h12.0h13.6h15.0h15.7h15.3h14.1h12.5h10.9h9.4h8.7h
Bordeaux–Mérignac Airport 9.2h10.4h12.0h13.5h14.9h15.5h15.2h14.0h12.5h10.9h9.6h8.9h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%14NowNowBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Semussac 0.0d0.0d0.0d0.0d0.1d0.8d2.8d3.8d1.3d0.1d0.0d0.0d
Cognac-Châteaubernard Air Base 0.0d0.0d0.0d0.0d0.1d0.9d2.1d2.6d0.7d0.1d0.0d0.0d
La Rochelle – Île de Ré Airport 0.0d0.0d0.0d0.0d0.2d1.0d3.0d3.6d1.5d0.2d0.0d0.0d
Bordeaux–Mérignac Airport 0.0d0.0d0.0d0.0d0.1d1.0d2.9d3.7d1.3d0.2d0.0d0.0d

Average Wind Speed

Compare the Average Wind Speed in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph12.28.610.47.713.07.95.9NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Semussac 12.011.811.210.89.79.49.18.89.510.811.512.0
Cognac-Châteaubernard Air Base 10.210.210.09.78.88.48.27.98.49.39.710.2
La Rochelle – Île de Ré Airport 12.812.411.811.410.39.99.59.310.111.512.312.9
Bordeaux–Mérignac Airport 7.77.87.67.56.86.56.26.06.37.07.37.6

Average Water Temperature

Compare the Average Water Temperature in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F69506852NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Semussac 51°F50°F51°F54°F59°F64°F68°F69°F67°F63°F58°F54°F
Cognac-Châteaubernard Air Base 51°F50°F51°F54°F59°F64°F68°F69°F67°F63°F58°F54°F
La Rochelle – Île de Ré Airport 51°F50°F51°F54°F58°F63°F67°F68°F66°F62°F57°F53°F
Bordeaux–Mérignac Airport 53°F52°F52°F55°F59°F64°F69°F70°F68°F64°F59°F55°F

Tourism Score

Compare the Tourism Score in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.80.8NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.9NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The percentage chance that a given day is within the growing season, defined 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).

Growing Degree Days

Compare the Growing Degree Days in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°FNowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac AirportJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh7.21.2NowNowLa Rochelle – Île de Ré AirportLa Rochelle – Île de Ré AirportCognac-Châteaubernard Air BaseCognac-Châteaubernard Air BaseBordeaux–Mérignac AirportBordeaux–Mérignac AirportSemussacSemussac
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Semussac 1.42.43.75.16.37.07.06.14.62.91.71.2
Cognac-Châteaubernard Air Base 1.42.33.75.06.16.97.06.14.62.91.71.2
La Rochelle – Île de Ré Airport 1.42.33.75.16.27.07.06.14.52.81.71.2
Bordeaux–Mérignac Airport 1.52.53.85.26.27.07.16.24.63.01.81.3

This report illustrates the typical weather for Semussac, Cognac-Châteaubernard Air Base, La Rochelle – Île de Ré Airport, and Bordeaux–Mérignac Airport year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

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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