Weather in San Sebastián for December 2026
In general, the average temperature in San Sebastián at the beginning of December is 13.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 11.8 °C by the end of December.
The climate of San Sebastián in December is notably wet, with an average of 13 rainy days, and a total of 91.7 mm of precipitation.
Is December a good time to visit San Sebastián? check out the best time to travel to San Sebastián page.
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San Sebastián Weather December
Temperatures trend during December in San Sebastián
December weather in San Sebastián day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain | 14° /8° | 3.7 mm | 1.5 | |
| 2 Dec. | Light rain | 11° /6° | 5 mm | 1.4 | |
| 3 Dec. |  Patchy rain possible | 12° /6° | 1.4 mm | 1.4 | |
| 4 Dec. | Light rain | 13° /9° | 7.9 mm | 1.4 | |
| 5 Dec. | Patchy rain possible | 15° /8° | 0.5 mm | 1.4 | |
| 6 Dec. | Patchy rain possible | 15° /9° | 1 mm | 1.4 | |
| 7 Dec. | Light rain | 16° /9° | 6.3 mm | 1.4 | |
| 8 Dec. | Light rain | 13° /9° | 5.3 mm | 1.4 | |
| 9 Dec. | Light rain | 14° /10° | 6.9 mm | 1.3 | |
| 10 Dec. | Light rain | 13° /9° | 3.7 mm | 1.3 | |
| 11 Dec. |  Overcast | 14° /8° | 0.3 mm | 1.3 | |
| 12 Dec. |  Moderate rain | 12° /8° | 8.6 mm | 1.3 | |
| 13 Dec. | Light rain | 11° /7° | 3 mm | 1.3 | |
| 14 Dec. | Patchy rain possible | 12° /7° | 0.8 mm | 1.3 | |
| 15 Dec. | Patchy rain possible | 12° /8° | 0.3 mm | 1.3 | |
| 16 Dec. | Light rain | 12° /7° | 7.5 mm | 1.3 | |
| 17 Dec. |  Sunny | 14° /7° | 0.1 mm | 1.3 | |
| 18 Dec. | Patchy rain possible | 14° /8° | 1.6 mm | 1.3 | |
| 19 Dec. | Light rain | 11° /6° | 7 mm | 1.3 | |
| 20 Dec. | Light rain | 11° /6° | 5.4 mm | 1.3 | |
| 21 Dec. | Light rain | 10° /6° | 4.9 mm | 1.3 | |
| 22 Dec. | Light rain | 11° /6° | 4.5 mm | 1.3 | |
| 23 Dec. | Light rain shower | 11° /7° | 2.3 mm | 1.3 | |
| 24 Dec. | Sunny | 11° /6° | 0.8 mm | 1.3 | |
| 25 Dec. | Overcast | 11° /5° | 0.5 mm | 1.3 | |
| 26 Dec. | Sunny | 11° /5° | 0 mm | 1.3 | |
| 27 Dec. | Sunny | 13° /5° | 0 mm | 1.3 | |
| 28 Dec. | Light drizzle | 12° /8° | 0.3 mm | 1.3 | |
| 29 Dec. | Light rain shower | 12° /7° | 0.6 mm | 1.3 | |
| 30 Dec. |  Partly cloudy | 12° /6° | 0.2 mm | 1.3 | |
| 31 Dec. | Light rain shower | 11° /5° | 1.4 mm | 1.3 | |
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San Sebastián weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 15°/10° | 12°/7° | 12°/6° |
| Rainfall | 111 mm | 92 mm | 127 mm |
| Wind | 15.3 km/h | 13.7 km/h | 17.1 km/h |
| Humidity | 78% | 80% | 78% |
| Rainy days | 14 days | 13 days | 18 days |
| Dry days | 16 days | 18 days | 13 days |
Planning a trip to San Sebastián? Discover the best time to visit
San Sebastián in December - FAQ
What are the expected maximum and minimum temperatures in San Sebastián during December?
How much rainfall should be expected in San Sebastián during December?
What are the typical wind conditions in San Sebastián during December?
December rainfall patterns in San Sebastián
What to pack to San Sebastián in December?
Cold & raw · highs around 12 °C, frequent showers
As you prepare for your trip to San Sebastián in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in San Sebastián, during December, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
Where is San Sebastián?Get accurate weather forecasts for San Sebastián, located at latitude 43.567 and longitude -5.9. Stay updated with localized weather information tailored for San Sebastián.