Colombo weather in September (Colombo District, Sri Lanka)
How does the September weather in Colombo compare to other months? Wondering about the weather this month? Our guide has all the details you need.
Temperatures
In September, Colombo tends to experience very high temperatures and heavy rainfall. Throughout the daytime, temperatures often hover around 30°C. However, as the sun sets and evening approaches, there's a noticeable cool-down. Temperatures gently drop to a more temperate 25°C. Remember, these are typical temperatures, and certain days could be even hotter. Ensure you wear appropriate clothing to handle the warmth.
Precipitation
Colombo in September falls under the rainy season with heavy rainfall, averaging around 262 mm for the month. The climate data from previous years indicates that there are typically about 14 days days of rain.Average sunshine
With about 189 hours of sunshine, the area enjoys a nice balance of sun and clouds, creating a pleasant environment.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Colombo. January, February and March typically offer the best circumstances. While April, May, June, July, August, September, October and November tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Colombo climate page with graphs.
Colombo, monthly averages in September
Min Temperature
25°C
Max Temperature
30°C
Water Temperature
28°C
Chance of Rain
45%
Precipitation
262 mm
Rainy days
14 days
Humidity
76%
Windspeed
7 km/h
Sunshine
189 hours
Percentage Sunshine
Where to go in Sri Lanka in September
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. With a water temperature of around 28°C this is a great month to swim so bring your swimwear.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Colombo.
Our site offers climate and forecast data for every country in the world. Are you going to Sri Lanka? On this website you can find historical weather averages for many cities in Sri Lanka. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
