Les Sables-d'Olonne, France Climate
The warmest month is August, with an average high of 22°C; the coldest is February, with an average low of 6°C. A normal year brings 786 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 29
- Normal high
- 19°C
- Normal low
- 14°C
- Reanalysis high
- 25°Cin 1997
- Reanalysis low
- 10°Cin 2015
- Chance of a wet day
- 45%
- Daylight
- 11 h 48 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 10°C | 6°C | 16°C (1993) | -5°C (1997) | 83 mm | 14.5 |
| February | 10°C | 6°C | 15°C (2019) | -5°C (2012) | 64 mm | 11.5 |
| March | 12°C | 7°C | 18°C (2012) | -2°C (2005) | 58 mm | 11.1 |
| April | 14°C | 9°C | 21°C (1994) | 2°C (1996) | 58 mm | 11.5 |
| May | 17°C | 12°C | 26°C (1992) | 6°C (1997) | 55 mm | 10.3 |
| June | 20°C | 15°C | 29°C (2019) | 9°C (2006) | 44 mm | 9.2 |
| July | 22°C | 16°C | 32°C (2006) | 12°C (2000) | 42 mm | 8.9 |
| August | 22°C | 17°C | 31°C (2003) | 12°C (1998) | 44 mm | 8.4 |
| September | 20°C | 15°C | 29°C (2005) | 9°C (2010) | 60 mm | 9.4 |
| October | 17°C | 13°C | 25°C (1997) | 3°C (1997) | 85 mm | 13.8 |
| November | 13°C | 10°C | 19°C (2006) | 1°C (2010) | 98 mm | 15.5 |
| December | 11°C | 7°C | 17°C (2000) | -7°C (1996) | 95 mm | 15.0 |
| Year | 15°C | 11°C | 786 mm | 139 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
786 mm in a normal year, most in November.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Les Sables-d'Olonne.
The muggiest month is August, when 8 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 6°C | 88% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 5°C | 85% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 7°C | 84% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 8°C | 81% | 98% | 2% | 0% | 0% | 0% | 0% |
| May | 11°C | 81% | 75% | 23% | 2% | 0% | 0% | 0% |
| June | 14°C | 80% | 38% | 43% | 17% | 1% | 0% | 0% |
| July | 15°C | 78% | 13% | 47% | 34% | 6% | 0% | 0% |
| August | 15°C | 78% | 13% | 43% | 36% | 8% | 0% | 0% |
| September | 13°C | 79% | 39% | 41% | 19% | 1% | 0% | 0% |
| October | 12°C | 83% | 58% | 33% | 9% | 0% | 0% | 0% |
| November | 9°C | 85% | 90% | 10% | 0% | 0% | 0% | 0% |
| December | 7°C | 87% | 99% | 1% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is August, with the sky 52 percent covered on average; the cloudiest is January, at 69 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is December, averaging 24.5 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 20, with 15 h 50 min of daylight; the shortest is Dec 18, with 8 h 34 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Les Sables-d'Olonne in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-29. Sun and moon: computed with the NOAA solar equations and Meeus.