Colombo Climate by Month
Colombo features a tropical monsoon climate. The city has two rainy seasons and a lot of precipitation in between; an average of more than 2500 mm of precipitation annually. Temperatures are almost constant throughout the year: the average daily temperature is around 30°C. Together with the abundant precipitation, this makes for high humidity. The best time of year to visit Colombo is in January, February, July and August.
Average day and night temperature
The climate in Colombo remains fairly constant, offering very warm temperatures throughout the year. Average daytime temperatures reach a very warm 33°C in March. In January, the coolest month of the year, temperatures drop to a very warm 30°C. At night, expect cooler temperatures, averaging 24°C during this month.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Colombo is known for its substantial rainfall, with annual precipitation reaching 2608 mm. Colombo can be quite wet during October, receiving approximately 355 mm of precipitation over 16 rainy days. In contrast January, experiences much drier conditions, with 71 mm of rainfall, spread across 5 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Colombo experiences moderate variation in sunshine hours across the seasons. With 9.2 hours daily sunshine in March, it dips to 6.3 hours in September, offering a balanced mix of sunny and overcast days.Monthly hours of sunshine
Daily hours of sunshine
Average water temperature
The mean water temperature over the year in Colombo ranges from 26°C in August to 28°C in January.
Water temperature over the year
Average humidity
The relative humidity is moderate throughout the year in Colombo.
Relative humidity over the year
Average wind speed
The mean wind speed over the year in Colombo ranges from 1°C in February to 2°C in January.
The mean monthly wind speed over the year (meters per second)
The best time of year to visit Colombo in Sri Lanka
Colombo has high temperatures year round ranging between 30°C and 32°C.Other facts from our historical weather data:
March has an average maximum temperature of 33°C and is the hottest month of the year.
The coolest month is January with an average maximum temperature of 30°C.
October tops the wettest month list with 355 mm of rainfall.
January is the driest month with 71 mm of precipitation.
March is the sunniest month with an average of 276 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
