Rotterdam monthly weather averages

  • Average daytime temperature

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

    Rotterdam average temperature chart
    Average monthly temperatures in Rotterdam (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 5.3 5.8 8.9 11.8 16.4 18.9 20.8 21.1 18.2 14.2 9.4 6.8
    °F 41.6 42.4 48 53.2 61.5 66 69.4 70 64.7 57.5 48.9 44.3

    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 Rotterdam (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 70 44 66 43 53 68 71 68 75 84 83 77
    inches 2.8 1.7 2.6 1.7 2.1 2.7 2.8 2.7 2.9 3.3 3.3 3
    Rainy days 19 12 17 13 14 13 13 13 15 16 18 19
  • Average daily sunshine

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

    Average daily sunshine Rotterdam
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 1.6 3.1 3.6 5.7 7.3 7 7 6.7 4.8 3.5 2.2 1.3
  • Day / night temperatures

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

    Maximum and minimum daily temperatures in Rotterdam (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 0.6 0.1 2 3.6 7.4 10.5 12.6 12.5 10.3 7.3 3.9 2.1
    Max °C 5.5 5.9 9.1 12 16.6 19.1 21 21.4 18.4 14.4 9.5 7
    Min °F 33 32.2 35.5 38.5 45.3 50.9 54.7 54.4 50.5 45.1 39 35.7
    Max °F 37.4 37.4 41.9 46 53.6 58.6 62.2 62.4 57.7 51.4 44.1 40.1
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Rotterdam in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 7.3 6.3 6.6 8.6 11.3 14.2 16.8 18.4 17.7 15.3 12.1 9.2
    °F 45.1 43.3 43.9 47.5 52.4 57.6 62.3 65.1 63.9 59.6 53.8 48.5
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Rotterdam (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 21 21 21 18 18 17 17 16 16 17 21 21
    mph 13 13 13 11 11 11 11 10 10 11 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 Rotterdam
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    88% 85% 84% 80% 78% 80% 79% 80% 83% 86% 87% 89%
Rotterdam

Other monthly averages

Rotterdam weather stats

Rotterdam weather statistics
Hottest month: August 21.1°C 70°F
Driest month: April 43mm 1.7ins
Sunniest month: May 7.3hrs
Coldest month: January 5.3°C 41.5°F
Wettest month: October 84mm 3.3ins
Warmest sea: August 18.4°C 65.1°F
Map showing location of Rotterdam (51.9225, 4.47917)

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