Weather in San Sebastian: December
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Average day temperature: | 54.7°F |
| Average night temperature: | 46.5°F | |
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Sea water temperature: | 57.4°F |
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Number of sunny days: | 11 days |
| Day length: | 9.0 - 9.2 hours | |
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Number of rainy days: | 6 days |
| Precipitation totals: | 3.7 in. | |
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| San Sebastian |
temperature
| San Sebastian |
Air temperature in December, °F
| Day temperature | Night temperature |
The highest day temperature during December of 2024 was 66°F. At the same time the lowest night temperature was 35°F. Daily and nightly averages during December were 53.1°F and 45.5°F.
Sea water temperature in San Sebastian in December, °F
The average sea water temperature in December of 2024 was 57.2°F. The highest and lowest sea temperatures during the month were 59.0°F and 54.5°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in San Sebastian in December is 4.3 in. Other months of the year show relatively similar values.
The average wind speed value in December is 7.5 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: 4.4.
Best time for vacation in San Sebastian
San Sebastian on a weather map
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