Helsinki monthly weather averages

  • Average daytime temperature

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

    Helsinki average temperature chart
    Average monthly temperatures in Helsinki (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C -2.4 -2.7 0.4 5.6 12.3 17.4 19.5 18.4 13.7 8.7 3.7 -0
    °F 27.7 27.1 32.6 42 54.1 63.3 67.1 65.1 56.6 47.7 38.7 32

    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 Helsinki (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 37 25 27 33 30 38 61 75 64 59 62 48
    inches 1.5 1 1.1 1.3 1.2 1.5 2.4 2.9 2.5 2.3 2.4 1.9
    Rainy days 18 15 14 12 9 10 13 14 16 17 19 19
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Helsinki

    Average daily sunshine Helsinki
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 0.7 1.8 3.6 5.7 8.8 10.7 9.2 6.9 4.4 2.7 1.2 0.7
  • Day / night temperatures

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

    Maximum and minimum daily temperatures in Helsinki (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C -7.6 -8.4 -5.7 -0.5 4.4 9.6 12.4 11.9 8.2 4.4 -0.2 -4.7
    Max °C -2.3 -2.6 0.5 5.7 12.5 17.6 19.7 18.6 13.8 8.9 3.8 0.1
    Min °F 18.4 16.9 21.7 31.1 39.8 49.3 54.2 53.3 46.8 39.8 31.6 23.5
    Max °F 23.2 22.1 27.3 36.7 47.1 56.5 60.8 59.4 51.8 43.9 35.2 27.9
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Helsinki in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 2.9 1.6 1.5 2.5 5.3 10.2 15.6 16.9 13.9 10 6.8 4.5
    °F 37.2 35 34.6 36.5 41.6 50.4 60.1 62.4 57 50 44.3 40.1
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Helsinki (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 19 18 18 17 16 16 15 15 18 20 21 21
    mph 12 11 11 10 10 10 9 9 11 13 13 13

    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 Helsinki
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    87% 87% 85% 82% 76% 75% 79% 81% 84% 85% 87% 87%
Helsinki

Other monthly averages

Helsinki weather stats

Helsinki weather statistics
Hottest month: July 19.5°C 67.1°F
Driest month: February 25mm 1ins
Sunniest month: June 10.7hrs
Coldest month: February -2.7°C 27.1°F
Wettest month: August 75mm 3ins
Warmest sea: August 16.9°C 62.4°F
Map showing location of Helsinki (60.60778, 21.4381)

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