Weather in Colombo in September
September in Colombo is a hot month. Plan the serious walking for morning. The rest of the day wants shade and a slower pace.
In Sri Lanka, this is how Colombo actually wears September, not how a country centroid would. Compared with April and January, September sits in the middle of Colombo's year.
- Average temp
- 28°C
25–30°C
- Rainfall
- 270 mm
A wet month
- Sunshine
- 6.3 h
hours per day
What to expect
Daytime
Hot days in Colombo. Ruins, markets and hills are a morning job. Midday sightseeing is how people remember September for the wrong reason.
Nights stay warm. Air-con, if you can get it, is part of the brief. A jumper for September in Colombo is almost always a waste of bag space.
Rain
Mixed skies in Colombo in September. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.
Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.
Evening
Evenings stay warm.
What to pack
Sun protection
Rain jacket
Where to stay in Colombo
Dates are a starting point for September.
Travel guides for Colombo
What to read before you book.
Average weather in Colombo
TemperatureRainfall
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FAQs about Colombo
Climate averages for Colombo, 1991–2020.
The best time to visit Colombo is between December and March, the most comfortable stretch of the year on these averages.
May is the hottest month, with an average around 29°C.
October is the wettest month, with about 349 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
