San Sebastian weather in October 2025

Expect 19°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in San Sebastian in October. Check more long-term weather averages for San Sebastian in October before you book your next holiday to Spain in 2025/2026.

  • 19°C maximum daytime temperature in October in San Sebastian19
    19°C max day temperature
  • 5 hours of sunshine per day
  • 14 days with some rainfall in October in San Sebastian14
    14 days with some rainfall
  • 11°C minimum night-time temperature in October in San Sebastian11
    11°C min night temperature
  • 11 hours of daylight per day in October in San Sebastian11
    11 hours of daylight per day
  • No heat & humidity in October in San Sebastian0
    No heat & humidity
  • 121 mm monthly rainfall in October in San Sebastian121
    121 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in San Sebastian4
    4 (Moderate) UV index
  • 18°C sea temperature in October in San Sebastian18
    18°C sea temperature

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The October 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)

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How hot is it in San Sebastian in October?

Daytime temperatures usually reach 19°C in San Sebastian in October, falling to 11°C at night.

How sunny is it in San Sebastian in October?

There are normally 5 hours of bright sunshine each day in San Sebastian in October - that's 42% of daylight hours.

How warm is the sea around San Sebastian in October?

The average sea temperature around San Sebastian in October is 18°C.

Does it rain in San Sebastian in October?

There are usually 14 days with some rain in San Sebastian in October and the average monthly rainfall is 121mm.

San Sebastian October sunrise & sunset times

Browse the sunrise and sunset times for San Sebastian in October 2025. Select a month to view San Sebastian sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 07:05 18:49
Thursday, 16th October 2025 07:23 18:23
Friday, 31st October 2025 07:42 18:01

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