Weather in San Sebastián in December
December in San Sebastián is cool outdoor weather: usable if you dress for it, not a beach brief.
In Spain, this is how San Sebastián actually wears December, not how a country centroid would. Compared with August and February, December sits in the middle of San Sebastián's year.
- Average temp
- 10°C
6–14°C
- Rainfall
- 179 mm
A wet month
- Sunshine
- 2.4 h
hours per day
What to expect
Daytime
Cool days in San Sebastián: a jumper you can take off, a shell in the bag. Walking is fine. Lingering outside without a layer is optimism.
Mornings and evenings are colder than the postcard. Pack for both, especially if you leave the built-up centre.
Rain
December is the wet side of the year in San Sebastián. Days can be heavy. Plans that cannot survive rain are the wrong plans.
This is not a reason to skip San Sebastián if you like the place. It is a reason to pack for weather and to stop treating every grey hour as a failed holiday.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in San Sebastián
Dates are a starting point for December.
Travel guides for San Sebastián
What to read before you book.
Average weather in San Sebastián
TemperatureRainfall
Similar weather in December
Other destinations whose December averages sit close to this one.
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FAQs about San Sebastián
Climate averages for San Sebastián, 1991–2020.
The best time to visit San Sebastián is between May and October, the most comfortable stretch of the year on these averages.
August is the hottest month, with an average around 22°C.
November is the wettest month, with about 224 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
