December · Spain
Best time to visit San Sebastian in December Weather, crowds & prices
Weather in San Sebastian in December
Average temperature 11°C, 187 mm of rain, about 14 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
2.7/10
Ranked #12 of 12 months
- Avg temp
- 11°C
- Rainfall
- 187 mm
- Humidity
- 80%
- Days with 6h+ sun
- 14
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in San Sebastian scores 2.7/10 for beach and coastal travel - ranked #12 of 12. Expect around 11°C, 187 mm of rain, and roughly 14 days with 6+ hours of sunshine this month.
San Sebastián wraps a shell-shaped bay, pintxos bars and the Basque coast into Spain's gastronomic capital.
December in San Sebastian — off-season conditions
Expect 11°C (52°F) in December. A good month for city streets, viewpoints and long meals; leave swimming for another season.
187 mm of rain signals a properly wet month, with only about 14 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 2.7/10 on the same scale — 12th of 12 months, versus 8.4/10 for the best month here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, July is materially better in San Sebastian — 5.7 points higher on the same scale.
Frequently asked
- What is the weather like in San Sebastian in December?
- In December, San Sebastian averages 11°C, 187 mm of rain, and about 14 days with 6+ hours of sunshine. Its climate-comfort score is 2.7/10.
- Is December a good time to visit San Sebastian?
- December earns a 2.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in San Sebastian in December?
- Expect about 187 mm of rain in December. Average humidity is 80% and there are about 14 days with 6+ hours of sunshine.
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