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Weather in San Sebastián for December 2026

Your guide to San Sebastián weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in San Sebastián at the beginning of December is 12.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 11.3 °C by the end of December.

    • Rain 🌧️

  • San Sebastián in December brings notable rainfall, with an average of 20 rainy days and a total precipitation of 118 mm.

    • More

  • Is December a good time to visit San Sebastián? check out the best time to travel to San Sebastián page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
11
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
11°/6°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
78 %
Avg humidity

San Sebastián Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
14°
2
Light rain shower
11°
3
Partly cloudy
11°
4
Light rain shower
12°
5
Patchy rain possible
13°
6
Sunny
13°
7
Light drizzle
14°
8
Patchy rain possible
13°
9
Light drizzle
14°
10
Light rain shower
13°
11
Overcast
12°
12
Light rain shower
12°
13
Partly cloudy
12°
14
Light rain shower
11°
15
Patchy rain possible
12°
16
Sunny
12°
17
Sunny
13°
18
Sunny
14°
19
Light rain shower
11°
20
Light rain shower
9°
21
Light rain shower
10°
22
Patchy rain possible
11°
23
Light rain shower
10°
24
Sunny
10°
25
Sunny
11°
26
Sunny
11°
27
Sunny
13°
28
Overcast
12°
29
Patchy rain possible
12°
30
Overcast
10°
31
Light rain
10°

Temperatures trend during December in San Sebastián

See the weather trend as well as the moving average line

December weather in San Sebastián day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Partly cloudy
Partly cloudy
 14° /7° 5.6 mm 4
2 Dec. Light rain shower
Light rain shower
 11° /6° 10.9 mm 3
3 Dec. Partly cloudy
Partly cloudy
 11° /6° 4.1 mm 3
4 Dec. Light rain shower
Light rain shower
 12° /7° 11.1 mm 3
5 Dec. Patchy rain possible
Patchy rain possible
 13° /7° 6 mm 3
6 Dec. Sunny
Sunny
 13° /7° 1.3 mm 3
7 Dec. Light drizzle
Light drizzle
 14° /7° 7.3 mm 4
8 Dec. Patchy rain possible
Patchy rain possible
 13° /8° 8.7 mm 3
9 Dec. Light drizzle
Light drizzle
 14° /8° 9.1 mm 3
10 Dec. Light rain shower
Light rain shower
 13° /8° 5 mm 3
11 Dec. Overcast
Overcast
 12° /6° 0.8 mm 3
12 Dec. Light rain shower
Light rain shower
 12° /7° 5.8 mm 3
13 Dec. Partly cloudy
Partly cloudy
 12° /6° 3.9 mm 4
14 Dec. Light rain shower
Light rain shower
 11° /6° 1.9 mm 3
15 Dec. Patchy rain possible
Patchy rain possible
 12° /6° 1.3 mm 3
16 Dec. Sunny
Sunny
 12° /6° 0.8 mm 3
17 Dec. Sunny
Sunny
 13° /7° 0.6 mm 3
18 Dec. Sunny
Sunny
 14° /7° 0.5 mm 4
19 Dec. Light rain shower
Light rain shower
 11° /6° 8.9 mm 3
20 Dec. Light rain shower
Light rain shower
 9° /6° 7 mm 1
21 Dec. Light rain shower
Light rain shower
 10° /5° 3.5 mm 2
22 Dec. Patchy rain possible
Patchy rain possible
 11° /6° 2 mm 2
23 Dec. Light rain shower
Light rain shower
 10° /5° 2.1 mm 2
24 Dec. Sunny
Sunny
 10° /6° 1.7 mm 2
25 Dec. Sunny
Sunny
 11° /4° 1.1 mm 2
26 Dec. Sunny
Sunny
 11° /4° 0 mm 3
27 Dec. Sunny
Sunny
 13° /6° 0 mm 3
28 Dec. Overcast
Overcast
 12° /6° 0 mm 2
29 Dec. Patchy rain possible
Patchy rain possible
 12° /6° 0.4 mm 2
30 Dec. Overcast
Overcast
 10° /5° 0.6 mm 2
31 Dec. Light rain
Light rain
 10° /4° 1.6 mm 2
Next
Important Notice
Our weather forecast for San Sebastián in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Sebastián forecast closer to your planned date for the most up-to-date weather information.
Change Month
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San Sebastián weather in December vs November vs January

Compare December weather in San Sebastián with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
NovemberDecemberJanuary
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures15°/10°11°/6°11°/6°
Rainfall125 mm118 mm86 mm
Wind15.7 km/h15.7 km/h16.6 km/h
Humidity78%78%74%
Rainy days22 days20 days16 days
Dry days8 days11 days15 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?

During December, expect a variety of temperatures with highs around 11° and lows near 6°, suitable for diverse activities and preferences.

How much rainfall should be expected in San Sebastián during December?

Significant rainfall exceeding 118 mm is expected in San Sebastián during December, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in San Sebastián during December?

The average wind speed in San Sebastián during December is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to San Sebastián in December?

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
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

December rainfall patterns in San Sebastián

Explore the daily rainfall trends and prepare for San Sebastiáns December weather 💧
Typically, San Sebastián has 20 rainy days in December with a total of 118 mm of rainfall.

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Location coordinates Where is San Sebastián?

Get accurate weather forecasts for San Sebastián, located at latitude 43.201 and longitude -4.423. Stay updated with localized weather information tailored for San Sebastián.

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