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San Sebastian — weather in May, water temperature

18.4°C Daytime temperatures 11.8°C Night temperatures 11 Sunny days 14.1-15.2 Sun (hours) 6 Rainy days 80.7 mm Precipitation 15.9°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 29.5°C — 22 May 2022.
The maximum night temperature 21.5°C — 28 May 2017.
The minimum daily temperature 11°C — 12 May 2018.
The minimum night temperature 3.7°C — 2 May 2016.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The warmest water 20.9 °C — 31 May 2020. The coldest water 13.6 °C — 6 May 2018.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 140.7 mm — November. Minimum precipitation 50.8 mm — September.
Wind speed, km / h
Maximum wind speed 14.4 km / h — December. Minimum wind speed 9.3 km / h — August.
Number of hours of sunshine
The maximum number of hours of sunshine per day 9.2 h. — August. The minimum number of hours of sunshine per day 4.6 h. — January.
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