San Sebastian Weather: December
 |
Average Day Temperature: | 55.1°F |
|
Average Night Temperature: | 46.0°F |
|
Sea Water Temperature: | 58.3°F |
|
Number of Sunny Days: | 11 days |
| Sunshine Hours: | 9.0 - 9.2 hours | |
|
Number of Rainy Days: | 6 days |
| Precipitation Totals: | 3.6 in | |
| detailed information | ||
forecast
| San Sebastian |
Temperature
| San Sebastian |
Air Temperature in December, °F
The highest day temperature in December 2025 was 65°F. The lowest night temperature was 35°F. The average values for day and night temperatures during December were 53.6°F и 44.7°F respectivly.
San Sebastian Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for San Sebastian was 59.5°F. The maximum and minimum values were 58.0°F and 61.0°F respectively.
You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in December, in
Precipitation total in December for San Sebastian is 3.6 in. It makes december one of the most rainy months of the year.
The average wind speed in December is 8.6 mph. It makes December one of the most windy months of the year for San Sebastian.
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 San Sebastian in December is 4.7 hours.
San Sebastian on the Weather Map
| Alicante |  |
+64 |
| Barcelona |  |
+56 |
| Costa Adeje | |
+70 |
| Costa Brava | |
+48 |
| Eivissa | |
+60 |
| Fuerteventura |  |
+70 |
| Gran Canaria | |
+70 |
| Lanzarote |  |
+64 |
| Madrid |  |
+52 |
| Malaga | |
+62 |
| Palma de Majorka | |
+56 |
| Palma de Mallorca | |
+60 |
| Tenerife | |
+68 |
| Torrevieja | |
+62 |
| Valencia | |
+64 |
| 1800 |  |
50°F | N 3 mph |
| 2100 |  |
50°F | SE 14 mph |
| 0000 |  |
48°F | E 13 mph |
| 0300 |  |
42°F | NE 6 mph |
| 0600 |  |
40°F | N 7 mph |
| 0900 |  |
42°F | N 11 mph |
| 1200 | |
54°F | NE 21 mph |
| 1500 |  |
54°F | NE 16 mph |