Climate in San Sebastián (Basque Country), Spain

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Average monthly minimum and maximum temperature in San Sebastián, Spain

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Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly hours of sunshine in San Sebastián, Spain

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Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Average monthly rainfall, snow, precipitation in San Sebastián, Spain

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Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average monthly rainy days in San Sebastián, Spain

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Average humidity

The mean monthly relative humidity over the year

Average monthly relative humidity in San Sebastián, Spain

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Weather Forecasts for San Sebastián

Fri   Mar 29
15°C | 6°C
SW 18 km/h
25 mm
overcast and heavy rain

overcast and heavy rain

Sat   Mar 30
15°C | 7°C
S 25 km/h
0.6 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

Sun   Mar 31
13°C | 7°C
S 29 km/h
9 mm
broken clouds and thunder

broken clouds and thunder

The best time of year to visit San Sebastián in Spain

San Sebastián has a mild maritime climate that is strongly influenced by its location on the Bay of Biscay. Because of this influence, the average temperatures here is slightly lower than those of the other coastal areas located on the Mediterranean Sea. It's not often cold in San Sebastián and frost or night frost will rarely occur. There is a lot of precipitation in San Sebastián throughout the year compared to the rest of Spain. The summers are a little bit drier than the winter months, but there is a chance of rain year round.

During the months of June, July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which is the warmest month in San Sebastián?
    August has an average maximum temperature of 24°C and is the warmest month of the year.
  • Which is the coldest month in San Sebastián?
    The coldest month is February with an average maximum temperature of 12°C.
  • Which is the wettest month in San Sebastián?
    November tops the wettest month list with 184 mm of rainfall.
  • Which is the driest month in San Sebastián?
    July is the driest month with 85 mm of precipitation.
  • Which is the sunniest month in San Sebastián?
    July is the sunniest month with an average of 199 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.