Weather in La Seyne sur Mer: December
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Average day temperature: | 55.1°F |
| Average night temperature: | 50.2°F | |
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Sea water temperature: | 60.5°F |
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Number of sunny days: | 17 days |
| Day length: | 9.0 - 9.2 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.8 in. | |
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forecast
| La Seyne sur Mer |
temperature
| La Seyne sur Mer |
Air temperature in December, °F
The highest day temperature during December of 2025 was 59°F. At the same time the lowest night temperature was 48°F. Daily and nightly averages during December were 55.7°F and 52.7°F.
Sea water temperature in La Seyne sur Mer in December, °F
The average sea water temperature in December of 2025 was 61.1°F. The highest and lowest sea temperatures during the month were 62.1°F and 60.1°F.
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in La Seyne sur Mer in December is 1.9 in. Other months of the year show relatively similar values.
The average wind speed value in December is 12.5 mph It makes December one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 6.0.
Best time for vacation in La Seyne sur Mer
La Seyne sur Mer on a weather map
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