Colombo monthly weather averages

  • Average daytime temperature

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

    Colombo average temperature chart
    Average monthly temperatures in Colombo (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 30.7 31.1 31.6 31.6 30.9 30.2 29.9 29.9 30.1 29.9 30 30.1
    °F 87.2 88 88.8 88.9 87.6 86.3 85.8 85.9 86.1 85.7 86 86.1

    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 Colombo (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 55 74 136 250 382 186 124 116 236 371 306 166
    inches 2.2 2.9 5.4 9.8 15 7.3 4.9 4.6 9.3 14.6 12.1 6.5
    Rainy days 5 5 9 14 14 15 11 11 14 16 15 10
  • Average daily sunshine

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

    Average daily sunshine Colombo
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 8.4 9.1 9.2 8.1 6.8 6.6 6.6 6.8 6.5 6.7 7.3 7.3
  • Day / night temperatures

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

    Maximum and minimum daily temperatures in Colombo (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 22.1 22.5 23.5 24.4 25.4 25.3 25 25 24.6 23.8 23.1 22.6
    Max °C 30.9 31.3 31.8 31.8 31.1 30.3 30 30.1 30.2 30 30.2 30.3
    Min °F 71.8 72.5 74.2 75.9 77.6 77.5 77 76.9 76.3 74.8 73.5 72.6
    Max °F 79.7 80.4 81.7 82.6 82.8 82 81.5 81.5 81.3 80.4 79.9 79.5
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Colombo in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 27.6 28 28.9 29.7 29.2 28.1 27.3 27.2 27.6 28.1 28.5 28
    °F 81.7 82.4 84.1 85.5 84.6 82.5 81.2 81 81.6 82.7 83.2 82.3
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Colombo (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 9 8 7 7 10 12 11 11 10 8 7 8
    mph 6 5 5 4 6 7 7 7 7 5 4 5

    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 Colombo
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    73% 73% 76% 79% 81% 81% 80% 78% 79% 81% 81% 78%

Other monthly averages

Colombo weather stats

Colombo weather statistics
Hottest month: May 30.9°C 87.6°F
Driest month: January 55mm 2.2ins
Sunniest month: March 9.2hrs
Coldest month: December 30.1°C 86.2°F
Wettest month: May 382mm 15ins
Warmest sea: April 29.7°C 85.5°F
Map showing location of Colombo (6.93194, 79.84778)

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