San Sebastián monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at San Sebastián

    San Sebastián average temperature chart
    Average monthly temperatures in San Sebastián (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 10.9 11.8 13.4 14.8 17.9 20.7 23.3 23.4 22.4 19.1 14.1 11.4
    °F 51.6 53.3 56.1 58.6 64.2 69.2 73.9 74 72.4 66.4 57.4 52.6

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in San Sebastián (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 127 103 103 122 107 77 62 90 97 121 143 133
    inches 5 4.1 4 4.8 4.2 3 2.4 3.5 3.8 4.8 5.6 5.2
    Rainy days 18 16 17 18 17 13 12 13 13 14 17 17
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in San Sebastián

    Average daily sunshine San Sebastián
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 3.3 3.9 4.8 5.1 6.2 7.1 7.6 7 6.4 5 3.8 3.1
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in San Sebastián (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 4.4 5 5.7 7.5 10.1 13 15.4 15.5 14 11.3 7.3 5.2
    Max °C 11.1 12 13.6 15 18.1 20.9 23.5 23.6 22.7 19.3 14.3 11.6
    Min °F 39.8 41 42.2 45.4 50.2 55.3 59.6 59.8 57.1 52.3 45.1 41.4
    Max °F 45.9 47.3 49.3 52.2 57.4 62.4 66.9 67.1 64.9 59.5 51.4 47.1
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around San Sebastián in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 12.8 12.4 12.5 13.2 15.3 18.5 20.9 21.8 20.5 17.9 15.4 13.7
    °F 55.1 54.3 54.4 55.7 59.6 65.4 69.6 71.2 68.8 64.3 59.8 56.6
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in San Sebastián (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 14 14 14 14 13 12 12 12 11 12 13 14
    mph 9 9 9 9 8 7 7 7 7 7 8 9

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in San Sebastián
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    77% 74% 72% 75% 76% 77% 77% 78% 75% 75% 76% 77%
San Sebastián

Other monthly averages

San Sebastián weather stats

San Sebastián weather statistics
Hottest month: August 23.4°C 74.1°F
Driest month: July 62mm 2.4ins
Sunniest month: July 7.6hrs
Coldest month: January 10.9°C 51.6°F
Wettest month: November 143mm 5.6ins
Warmest sea: August 21.8°C 71.2°F
Map showing location of San Sebastián (43.31283, -1.97499)

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