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Thonon-les-Bains Weather by Month
Average temperatures, rainfall and humidity for Thonon-les-Bains, France, month by month, built from OpenWeather's historical records. Use it to see what a typical Thonon-les-Bains month looks like before you travel — then check the live Thonon-les-Bains forecast for the days ahead.
Warmest month
July
26°C average high
Coolest month
January
-1°C average low
Wettest month
May
114 mm of rain
Driest month
February
54 mm of rain
Average temperature and rainfall in Thonon-les-Bains 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 | 5°C | -1°C | -15°C / 15°C | 87 mm | 86% | 10 km/h |
| February | 7°C | 0°C | -17°C / 18°C | 54 mm | 81% | 10 km/h |
| March | 11°C | 2°C | -8°C / 20°C | 84 mm | 75% | 9 km/h |
| April | 15°C | 5°C | -6°C / 26°C | 65 mm | 71% | 9 km/h |
| May | 18°C | 9°C | -1°C / 30°C | 114 mm | 75% | 8 km/h |
| June | 24°C | 13°C | 2°C / 35°C | 87 mm | 72% | 7 km/h |
| July | 26°C | 15°C | 7°C / 36°C | 83 mm | 68% | 8 km/h |
| August | 25°C | 15°C | 4°C / 36°C | 80 mm | 71% | 7 km/h |
| September | 20°C | 11°C | 3°C / 30°C | 75 mm | 78% | 8 km/h |
| October | 15°C | 8°C | -1°C / 28°C | 95 mm | 84% | 8 km/h |
| November | 10°C | 3°C | -7°C / 20°C | 98 mm | 86% | 9 km/h |
| December | 6°C | 0°C | -11°C / 17°C | 83 mm | 89% | 9 km/h |
Best time to visit Thonon-les-Bains
The most comfortable time to visit Thonon-les-Bains is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 1004 mm a year.
Travellers who prefer heat should aim for July, when highs average 26°C. May is the month to avoid if rain would spoil your plans — it averages 114 mm, roughly 2× the rainfall of February.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Thonon-les-Bains forecast for what is happening now.