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San Sebastian weather in May 2025
Expect 18°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in San Sebastian in May. Check more long-term weather averages for San Sebastian in May before you book your next holiday to Spain in 2025/2026.
- 1818°C max day temperature
- 6 hours of sunshine per day
- 1717 days with some rainfall
- 1010°C min night temperature
- 1515 hours of daylight per day
- 0No heat & humidity
- 107107 mm of monthly rainfall
- 77 (High) UV index
- 1616°C sea temperature
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Recommended for Spain
The May weather guide for Spain (San Sebastian) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Spain
How hot is it in San Sebastian in May?
Daytime temperatures usually reach 18°C in San Sebastian in May, falling to 10°C at night.
How sunny is it in San Sebastian in May?
There are normally 6 hours of bright sunshine each day in San Sebastian in May - that's 39% of daylight hours.
How warm is the sea around San Sebastian in May?
The average sea temperature around San Sebastian in May is 16°C.
Does it rain in San Sebastian in May?
There are usually 17 days with some rain in San Sebastian in May and the average monthly rainfall is 107mm.
San Sebastian May sunrise & sunset times
Browse the sunrise and sunset times for San Sebastian in May 2025. Select a month to view San Sebastian sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 06:01 | 20:10 |
Friday, 16th May 2025 | 05:43 | 20:27 |
Saturday, 31st May 2025 | 05:31 | 20:41 |
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