La Seyne sur Mer Weather: December
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Average Day Temperature: | 55.7°F |
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Average Night Temperature: | 50.2°F |
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Sea Water Temperature: | 61.6°F |
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Number of Sunny Days: | 17 days |
| Sunshine Hours: | 9.0 - 9.2 hours | |
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Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.8 in | |
| detailed information | ||
forecast
| La Seyne sur Mer |
Temperature
| La Seyne sur Mer |
Air Temperature in December, °F
The highest day temperature in December 2025 was 60°F. The lowest night temperature was 48°F. The average values for day and night temperatures during December were 56.0°F и 52.6°F respectivly.
La Seyne sur Mer Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for La Seyne sur Mer was 62.1°F. The maximum and minimum values were 60.4°F and 63.4°F respectively.
Most of the days in December are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in December, in
Precipitation total in December for La Seyne sur Mer is 1.8 in. It makes december one of the most rainy months of the year.
The average wind speed in December is 12.6 mph. It makes December one of the most windy months of the year for La Seyne sur Mer.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for La Seyne sur Mer in December is 6.1 hours.
| Annecy | ![]() |
+36 |
| Antibes | ![]() |
+54 |
| Biarritz | ![]() |
+50 |
| Bordeaux | ![]() |
+48 |
| Cannes | ![]() |
+52 |
| Chamonix | ![]() |
+20 |
| Corsica | ![]() |
+54 |
| Etretat | ![]() |
+44 |
| Marseilles | ![]() |
+52 |
| Menton | ![]() |
+56 |
| Montpellier | ![]() |
+48 |
| Nice | ![]() |
+54 |
| Paris | ![]() |
+44 |
| Saint-Tropez | ![]() |
+54 |
| Toulouse | ![]() |
+44 |
| 1500 | ![]() |
50°F | E 25 mph |
| 1800 | ![]() |
48°F | E 30 mph |
| 2100 | ![]() |
46°F | SE 35 mph |
| 0000 | ![]() |
44°F | SE 29 mph |
| 0300 | ![]() |
42°F | SE 28 mph |
| 0600 | ![]() |
42°F | SE 30 mph |
| 0900 | ![]() |
40°F | SE 26 mph |
| 1200 | ![]() |
44°F | SE 33 mph |



































