Climate averages 1991–2020
La Rochelle weather
in August.
A warm, moderately wet month: the warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in La Rochelle: daytime highs average 24.1°C and nights cool to about 16.9°C. By daytime temperature it is the warmest month of the year.
Expect about 42 mm of rain on roughly 7 days, which makes August a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 10 min on an average August day.
The nearest other city in this atlas is Nantes (121 km away). In August its highs average 23.9°C, about as warm as La Rochelle, with 47 mm of rain.
Among the 57 cities listed in France, La Rochelle ranks joint 38th of 57 for the warmest August highs and joint 12th of 57 for the driest August (rainfall, lowest first). The mean August high of those 57 cities is 25.0°C; La Rochelle is 0.9°C cooler than that mean.
From August to September, average highs fall by 2.5°C to 21.6°C, and monthly rainfall rises from 42 mm to 55 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
La Rochelle climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.3°C4.5°C | 4.5°C | 77 | 11.9 | 9.19 h |
| February | 10.0°C4.2°C | 4.2°C | 58 | 9.8 | 10.310 h |
| March | 12.8°C6.3°C | 6.3°C | 54 | 10.0 | 11.912 h |
| April | 15.2°C8.4°C | 8.4°C | 57 | 9.8 | 13.514 h |
| May | 18.7°C11.8°C | 11.8°C | 57 | 10.2 | 14.915 h |
| June | 21.8°C14.9°C | 14.9°C | 47 | 8.4 | 15.716 h |
| July | 23.7°C16.7°C | 16.7°C | 36 | 7.1 | 15.415 h |
| August, selected | 24.1°C16.9°C | 16.9°C | 42 | 7.2 | 14.214 h |
| September | 21.6°C14.4°C | 14.4°C | 55 | 8.0 | 12.613 h |
| October | 17.5°C11.7°C | 11.7°C | 87 | 12.3 | 11.011 h |
| November | 12.8°C7.7°C | 7.7°C | 92 | 12.8 | 9.59 h |
| December | 9.9°C5.1°C | 5.1°C | 87 | 12.8 | 8.79 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Nantes in AugustFrance · 121 kmHigh 23.9°C · Low 15.3°C · 47 mm rain
- Poitiers in AugustFrance · 124 kmHigh 25.2°C · Low 15.5°C · 49 mm rain
- Angers in AugustFrance · 152 kmHigh 24.5°C · Low 15.2°C · 46 mm rain
- Bordeaux in AugustFrance · 154 kmHigh 27.1°C · Low 16.7°C · 57 mm rain
- Limoges in AugustFrance · 189 kmHigh 24.2°C · Low 14.9°C · 73 mm rain
- Tours in AugustFrance · 197 kmHigh 25.2°C · Low 15.7°C · 48 mm rain
- Rennes in AugustFrance · 220 kmHigh 23.2°C · Low 14.3°C · 46 mm rain
- Le Mans in AugustFrance · 229 kmHigh 24.1°C · Low 14.9°C · 47 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for La Rochelle) is explained once on the La Rochelle year overview and on the Sources, method and limits page.