San Sebastian weather in August 2026

Q: How hot is it in San Sebastian in August?

Daytime temperatures usually reach 32°C in San Sebastian in August with moderate heat and humidity, falling to 16°C at night.

Q: How sunny is it in San Sebastian in August?

There are normally 11 hours of bright sunshine each day in San Sebastian in August - that's 79% of daylight hours.

Q: Does it rain in San Sebastian in August?

There are usually 4 days with some rain in San Sebastian in August and the average monthly rainfall is 12mm.

Expect daytime maximum temperatures of 75°F in San Sebastian, Spain in August based on long-term weather averages. There are 7 hours of sunshine per day on average with 13 days with some rainfall and typically 3.5 inches of rainfall in the month.

75
75°F max day temperature
7
7 hours of sunshine per day
13
13 days with some rainfall
59
59°F min night temperature
14
14 hours of daylight per day
L
Low heat & humidity
3.5
3.5 inches of monthly rainfall
7
7 (High) UV index
72
72°F sea temperature

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The August 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) | Imperial (°F)

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How hot is it in San Sebastian in August?

Daytime temperatures usually reach 90°F in San Sebastian in August with moderate heat and humidity, falling to 61°F at night.

How sunny is it in San Sebastian in August?

There are normally 11 hours of bright sunshine each day in San Sebastian in August - that's 79% of daylight hours.

Does it rain in San Sebastian in August?

There are usually 4 days with some rain in San Sebastian in August and the average monthly rainfall is 0.5 inches.

San Sebastian August sunrise & sunset times

Browse the sunrise and sunset times for San Sebastian in August 2026. Select a month to view San Sebastian sunrise and sunset times for the next 12 months.

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