Colombo monthly weather averages

Average daytime temperature

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

Colombo average temperature chart (Celsius) Colombo average temperature chart (Fahrenheit)
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.

Colombo monthly rainfall chart (mm) Colombo monthly rainfall chart (inches)
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

Colombo average daily sunshine chart
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.

Colombo average minimum / maximum temperatures (Celsius) Colombo average minimum / maximum temperatures (Fahrenheit)
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.

Colombo average sea temperature chart (Celsius) Colombo average sea temperature chart (Fahrenheit)
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.

Colombo average winspeed by month (km/h) Colombo average winspeed by month (mph)
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.

Colombo relative humidity averages
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%
Colombo

Other monthly averages

UV index Best time to go?

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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