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La Seyne-sur-Mer Weather by Month
Average temperatures, rainfall and humidity for La Seyne-sur-Mer, France, month by month, built from OpenWeather’s historical records. Use it to see what a typical La Seyne-sur-Mer month looks like before you travel — then check the live La Seyne-sur-Mer forecast for the days ahead.
Warmest month
July
31°C average high
Coolest month
January
6°C average low
Wettest month
November
69 mm of rain
Driest month
July
10 mm of rain
Average temperature and rainfall in La Seyne-sur-Mer 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 | 13°C | 6°C | -4°C / 21°C | 43 mm | 74% | 15 km/h |
| February | 14°C | 6°C | -3°C / 22°C | 56 mm | 74% | 14 km/h |
| March | 16°C | 7°C | 0°C / 22°C | 60 mm | 69% | 15 km/h |
| April | 19°C | 10°C | 1°C / 26°C | 46 mm | 69% | 14 km/h |
| May | 22°C | 13°C | 6°C / 31°C | 27 mm | 69% | 14 km/h |
| June | 28°C | 18°C | 10°C / 37°C | 16 mm | 68% | 12 km/h |
| July | 31°C | 20°C | 13°C / 36°C | 10 mm | 64% | 12 km/h |
| August | 30°C | 20°C | 14°C / 37°C | 15 mm | 64% | 12 km/h |
| September | 26°C | 17°C | 7°C / 33°C | 37 mm | 67% | 12 km/h |
| October | 22°C | 14°C | 4°C / 29°C | 53 mm | 75% | 12 km/h |
| November | 17°C | 9°C | -1°C / 25°C | 69 mm | 73% | 13 km/h |
| December | 14°C | 6°C | -2°C / 20°C | 55 mm | 75% | 12 km/h |
Best time to visit La Seyne-sur-Mer
The most comfortable time to visit La Seyne-sur-Mer is generally May to June and 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 487 mm a year.
Travellers who prefer heat should aim for July, when highs average 31°C. November is the month to avoid if rain would spoil your plans — it averages 69 mm, roughly 7× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the La Seyne-sur-Mer forecast for what is happening now.