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Biarritz Weather by Month
Average temperatures, rainfall and humidity for Biarritz, France, month by month, built from OpenWeather's historical records. Use it to see what a typical Biarritz month looks like before you travel — then check the live Biarritz forecast for the days ahead.
Warmest month
August
26°C average high
Coolest month
January
5°C average low
Wettest month
November
137 mm of rain
Driest month
July
42 mm of rain
Average temperature and rainfall in Biarritz by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 12°C | 5°C | -6°C / 24°C | 124 mm | 78% | 10 km/h |
| February | 13°C | 6°C | -6°C / 27°C | 124 mm | 76% | 11 km/h |
| March | 15°C | 7°C | -1°C / 28°C | 107 mm | 72% | 10 km/h |
| April | 17°C | 10°C | 1°C / 31°C | 75 mm | 73% | 9 km/h |
| May | 19°C | 12°C | 3°C / 35°C | 104 mm | 76% | 9 km/h |
| June | 23°C | 15°C | 7°C / 41°C | 81 mm | 80% | 8 km/h |
| July | 25°C | 18°C | 8°C / 40°C | 42 mm | 79% | 7 km/h |
| August | 26°C | 17°C | 8°C / 41°C | 61 mm | 79% | 7 km/h |
| September | 24°C | 15°C | 8°C / 38°C | 65 mm | 78% | 8 km/h |
| October | 21°C | 13°C | 1°C / 34°C | 79 mm | 76% | 8 km/h |
| November | 16°C | 9°C | -3°C / 28°C | 137 mm | 78% | 10 km/h |
| December | 14°C | 7°C | -6°C / 26°C | 102 mm | 77% | 10 km/h |
Best time to visit Biarritz
The most comfortable time to visit Biarritz is generally July to September, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around November, totalling about 1102 mm a year.
Travellers who prefer heat should aim for August, when highs average 26°C. November is the month to avoid if rain would spoil your plans — it averages 137 mm, roughly 3× the rainfall of July.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Biarritz forecast for what is happening now.