La Seyne-sur-Mer Weather in December
What's the weather like in La Seyne-sur-Mer (Provence-Alpes-Côte d'Azur) in December 2025?
The climate in La Seyne-sur-Mer during December can be summarized as cool and a little damp.
December is in the winter in La Seyne-sur-Mer and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 13°C (55°F), whilst at night 6°C (43°F) is normal.
| Daytime temperature | 12.9°C 55.1°F |
|---|---|
| Nightly temperature | 6°C 42.7°F |
| Average temperature | 9.4°C 48.9°F |
| Daily sunshine | 5.4 hrs |
| Avg rainfall | 82 mm 3.2 ins |
| Rainy days | 9 days |
| Sea temperature | 14.3°C 57.8°F |
| Humidity | 74% |
| Windspeed | 16.2kph 10 mph |
On average December is the 3rd wettest month of the year in La Seyne-sur-Mer with around 82mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.4 hours of sunshine per day.
December temperatures in La Seyne-sur-Mer
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in La Seyne-sur-Mer in December 2025.
Other monthly averages
Best places to visit in December
La Seyne-sur-Mer weather stats
| Hottest month: | July | 28.2°C 82.8°F |
|---|---|---|
| Driest month: | July | 12mm 0.5ins |
| Sunniest month: | July | 12.8hrs |
| Coldest month: | January | 11.8°C 53.2°F |
| Wettest month: | November | 88mm 3.5ins |
© Google
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