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Weather in San Sebastián for April 2026

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

    Official Weather Alert ⚠️

  • Yellow Thunderstorm Warning - See hour by hour.

    • Temperatures

  • So far, April 2026 in San Sebastián is slightly warmer than the historical average by 1.4 °C.

  • The forecast for the next days in San Sebastián predicts temperatures to be around 18 °C, close to the historical average.

  • In general, the average temperature in San Sebastián at the beginning of April is 16.7 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 16.6 °C by the end of April.

    • Rain 🌧️

  • San Sebastián in April brings notable rainfall, with an average of 19 rainy days and a total precipitation of 62.3 mm.

    • More

  • Is April 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
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/9°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
74 %
Avg humidity

San Sebastián Weather April

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

Temperatures trend during April in San Sebastián

See the weather trend as well as the moving average line

April weather in San Sebastián day by day

Click on a date for more information
March May
Date Weather Temperatures Rain UV More
1 Apr. Light rain shower
Light rain shower
 14° /8° 2.2 mm 3
2 Apr. Light rain shower
Light rain shower
 13° /7° 3.2 mm 2
3 Apr. Patchy rain possible
Patchy rain possible
 15° /8° 0.7 mm 4
4 Apr. Partly cloudy
Partly cloudy
 19° /9° 0 mm 4
5 Apr. Patchy rain possible
Patchy rain possible
 18° /11° 0.1 mm 4
6 Apr. Partly cloudy
Partly cloudy
 20° /10° 0.2 mm 5
7 Apr. Patchy light rain
Patchy light rain
 18° /10° 1.2 mm 4
8 Apr. Light rain shower
Light rain shower
 18° /9° 4.3 mm 4
9 Apr. Sunny
Sunny
 16° /8° 1.1 mm 4
10 Apr. Patchy rain possible
Patchy rain possible
 18° /8° 0.6 mm 4
11 Apr. Sunny
Sunny
 17° /10° 1.6 mm 4
12 Apr. Sunny
Sunny
 16° /10° 2.1 mm 4
13 Apr. Light rain shower
Light rain shower
 15° /9° 2.1 mm 4
14 Apr. Overcast
Overcast
 16° /7° 0.1 mm 4
15 Apr. Light rain shower
Light rain shower
 14° /8° 7 mm 3
16 Apr. Light rain shower
Light rain shower
 15° /8° 2.4 mm 4
17 Apr. Partly cloudy
Partly cloudy
 15° /7° 0.6 mm 4
18 Apr. Patchy rain possible
Patchy rain possible
 15° /9° 1.2 mm 3
19 Apr. Sunny
Sunny
 17° /7° 5.3 mm 4
20 Apr. Sunny
Sunny
 16° /8° 2 mm 4
21 Apr. Partly cloudy
Partly cloudy
 16° /9° 0.3 mm 4
22 Apr. Patchy rain possible
Patchy rain possible
 14° /9° 1.7 mm 4
23 Apr. Light rain shower
Light rain shower
 16° /8° 1.4 mm 4
24 Apr. Overcast
Overcast
 15° /9° 0.6 mm 4
25 Apr. Light rain shower
Light rain shower
 16° /8° 4.1 mm 4
26 Apr. Light rain shower
Light rain shower
 16° /9° 1.5 mm 4
27 Apr. Light rain shower
Light rain shower
 16° /9° 1.5 mm 4
28 Apr. Patchy rain possible
Patchy rain possible
 17° /8° 0.3 mm 5
29 Apr. Moderate rain
Moderate rain
 17° /12° 11.3 mm 5.1
30 Apr. Patchy rain possible
Patchy rain possible
 19° /10° 0.1 mm 6.6
Next
Important Notice
Our weather forecast for San Sebastián in April 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 April vs March vs May

Compare April 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.
MarchAprilMay
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures13°/7°15°/9°17°/11°
Rainfall99 mm62 mm115 mm
Wind17.9 km/h16.2 km/h12.8 km/h
Humidity76%74%79%
Rainy days21 days19 days20 days
Dry days10 days11 days11 days

Planning a trip to San Sebastián? Discover the best time to visit

San Sebastián in April - FAQ

What are the expected maximum and minimum temperatures in San Sebastián during April?

During April, expect a variety of temperatures with highs around 15° and lows near 9°, suitable for diverse activities and preferences.

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

Moderate rainfall is anticipated in San Sebastián during April, with a total of 62.3 mm spread over approximately 19 days. Considering plans for rainy days is advisable.

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

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

What to pack to San Sebastián in April?

As you prepare for your trip to San Sebastián in April, 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 April, 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

April rainfall patterns in San Sebastián

Explore the daily rainfall trends and prepare for San Sebastiáns April weather 💧
Typically, San Sebastián has 19 rainy days in April with a total of 62.3 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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