San Sebastián Climate by Month
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.
The graphs below provide an overview of the climate in San Sebastián (Basque Country), Spain. They present long-term patterns and averages of weather conditions over a 30-year period.
Average day and night temperature
The mean minimum and maximum temperatures over the year.
Monthly hours of sunshine
The average monthly total hours of sunshine over the year
Monthly precipitation
The mean monthly precipitation over the year, including rain, snow, hail etc.
Monthly rainy days
The average number of days each month with rain, snow, hail etc.
Average humidity
The mean monthly relative humidity over the year
