San Sebastián · WinterMonth summary
San Sebastián weather in December
⚠️ Fair
🌡️ Temperature min / max
8°C – 14°C
🌧 Rainy days
49% of days
☀️ Sunshine
5.7h per day on average
🌊 🌊 Season
Winter
⭐ ⭐ Weather score
4.1/10
📅 📅 Best month
July (7.8/10)
Quick decision
Should you visit San Sebastián in December?
⚠️ Fair
✅ Yes if: you enjoy winter atmosphere and the lowest prices of the year.
❌ No if: you're looking for sunshine or outdoor activities.
Our take: December brings a challenging climate (4.1/10). July offers milder conditions if your dates are flexible.
By trip type
San Sebastián in December by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ❌ Not recommended
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in December
🎯 Winter swell — more powerful waves, ideal for experienced surfers In December, San Sebastián sees 14°C during the day with 5.7h of sunshine per day. With 49% of rainy days, always have indoor alternatives planned.
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Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 6°C | 12°C | 52% | 6.6 | 5.9h | 4.0/10 |
| 🌦️ February | 7°C | 14°C | 49% | 5.3 | 7.8h | 4.4/10 |
| 🌦️ March | 8°C | 15°C | 55% | 5.0 | 8.9h | 4.7/10 |
| 🌦️ April | 9°C | 17°C | 49% | 4.1 | 10.1h | 6.9/10 |
| 🌦️ May | 12°C | 18°C | 52% | 4.1 | 11.6h | 7.0/10 |
| 🌦️ June | 15°C | 21°C | 47% | 3.6 | 11.8h | 7.3/10 |
| 🌤️ July | 17°C | 23°C | 40% | 2.4 | 12.2h | 7.8/10 |
| 🌤️ August | 18°C | 24°C | 40% | 3.2 | 11.8h | 7.8/10 |
| 🌤️ September | 16°C | 22°C | 44% | 4.2 | 10.6h | 7.4/10 |
| 🌦️ October | 13°C | 20°C | 43% | 4.5 | 8.9h | 7.1/10 |
| 🌦️ November | 10°C | 15°C | 58% | 7.7 | 6.9h | 4.2/10 |
| 🌦️ December | 8°C | 14°C | 49% | 6.1 | 5.7h | 4.1/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In December, San Sebastián averages 14°C, 49% rainy days and 5.7h of sunshine per day. Overall weather score: 4.1/10.
See methodology →
Comparison
December vs July (best month)
The best month is July (score 7.8/10). Difference:
- 🌡️ Max temperature : +9°C
- 🌧 Rainy days : -9%
- ☀️ Sunshine : +6.5h/day
FAQ
FAQ — San Sebastián in December
Is December a good time to visit San Sebastián?
December is not recommended for San Sebastián (score 4.1/10). With 49% rainy days and 5.7h of sunshine, consider July (7.8/10) instead.
What's the weather like in San Sebastián in December?
It's cool with 14°C daytime and 8°C at night. 5.7h of sunshine per day. Pack warm clothes and favour indoor visits.
Accommodation
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Activities & tours
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