The highest day temperature in August 2025 was 88°F. The lowest night temperature was 80°F. The average values for day and night temperatures during August were 85.2°F и 81.5°F respectivly.

The average sea surface temperature in August 2025 for Colombo was 85.8°F. The maximum and minimum values were 84.2°F and 87.4°F respectively.

Most of the days in August are gloomy but you can also expect sunny days.

Precipitation total in August for Colombo is 14.6 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 10.6 mph. It makes August one of the most windy months of the year for Colombo.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Colombo in August is 5.1 hours.