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Weather in San Sebastián for May 2027

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

    Temperatures

  • In general, the average temperature in San Sebastián at the beginning of May is 15.2 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.5 °C by the end of May.

    • Rain 🌧️

  • The climate of San Sebastián in May is notably wet, with an average of 15 rainy days, and a total of 90.7 mm of precipitation.

    • More

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

  • ✨ Is May a good time to visit San Sebastián? – Ask the AI Weatherman

Average dry days
16
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/10°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
81 %
Avg humidity

San Sebastián Weather May

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

Temperatures trend during May in San Sebastián

See the weather trend as well as the moving average line

May weather in San Sebastián day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
 16° /9° 2.2 mm 4
2 May Light rain
Light rain
 17° /9° 6.6 mm 3
3 May Light rain
Light rain
 15° /9° 5.9 mm 3
4 May Light rain
Light rain
 15° /10° 4.7 mm 3
5 May Light rain
Light rain
 13° /9° 8.7 mm 3
6 May Partly cloudy
Partly cloudy
 14° /7° 0.7 mm 4
7 May Mist
Mist
 16° /7° 0.1 mm 5
8 May Patchy rain possible
Patchy rain possible
 16° /8° 2.3 mm 4
9 May Light rain
Light rain
 18° /9° 3.2 mm 4
10 May Moderate rain
Moderate rain
 17° /10° 11.3 mm 4
11 May Light rain
Light rain
 17° /10° 5 mm 4
12 May Light rain
Light rain
 16° /9° 2.9 mm 3
13 May Patchy rain possible
Patchy rain possible
 16° /10° 1.6 mm 4
14 May Light rain
Light rain
 13° /9° 7.4 mm 3
15 May Light rain
Light rain
 13° /9° 8.9 mm 3
16 May Light drizzle
Light drizzle
 16° /8° 1.2 mm 4
17 May Light rain shower
Light rain shower
 16° /8° 1.2 mm 4
18 May Light rain
Light rain
 17° /9° 4.1 mm 5
19 May Light rain
Light rain
 17° /10° 4.3 mm 4
20 May Patchy rain possible
Patchy rain possible
 18° /9° 0.2 mm 6
21 May Light rain shower
Light rain shower
 15° /10° 2.1 mm 4
22 May Light rain shower
Light rain shower
 20° /11° 1.9 mm 5
23 May Patchy rain possible
Patchy rain possible
 19° /10° 0.1 mm 5
24 May Partly cloudy
Partly cloudy
 21° /11° 0.2 mm 6
25 May Patchy rain possible
Patchy rain possible
 22° /12° 0.7 mm 6
26 May Patchy rain possible
Patchy rain possible
 19° /13° 0.3 mm 5
27 May Patchy rain possible
Patchy rain possible
 23° /11° 0.4 mm 5
28 May Partly cloudy
Partly cloudy
 21° /12° 0 mm 6
29 May Sunny
Sunny
 21° /12° 0 mm 7
30 May Light rain
Light rain
 19° /13° 2.5 mm 5
31 May Patchy rain possible
Patchy rain possible
 19° /12° 0.1 mm 5
Next
Important Notice
Our weather forecast for San Sebastián in May 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 May vs April vs June

Compare May 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.
AprilMayJune
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures16°/9°17°/10°21°/14°
Rainfall65 mm91 mm51 mm
Wind14.3 km/h13.3 km/h13.4 km/h
Humidity79%81%81%
Rainy days9 days15 days11 days
Dry days21 days16 days19 days

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

San Sebastián in May - FAQ

What are the expected maximum and minimum temperatures in San Sebastián during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in San Sebastián during May?
Moderate rainfall is anticipated in San Sebastián during May, with a total of 90.7 mm spread over approximately 15 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in San Sebastián during May?
The average wind speed in San Sebastián during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in San Sebastián

Explore the daily rainfall trends and prepare for San Sebastiáns May weather 💧
Typically, San Sebastián has 15 rainy days in May with a total of 90.7 mm of rainfall.

UV exposure in San Sebastián during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

What to pack to San Sebastián in May?

🌦️ Mild · highs around 17 °C, frequent showers

As you prepare for your trip to San Sebastián in May, 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 May, is comfortable and enjoyable, regardless of the weather conditions.

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Location coordinates 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.

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