Weather in September 2025

Colombo weather in September 2025

°C °F

The average weather in Colombo in September

The weather in Colombo in September is very hot. The average temperatures are between 26°C and 29°C, drinking water regularly is advisable.

There’s going to be many days of rain during the month of September in Colombo.

Colombo should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!

Our weather forecast can give you a great sense of what weather to expect in Colombo in September 2025.

If you’re planning to visit Colombo in the near future, we highly recommend that you review the 14 day weather forecast for Colombo before you arrive.

Temperatures
29° / 26°
Rainy Days
15
Snowy Days
0
Dry Days
15
Rainfall
475
mm
Sun Hours
10.1
Hrs

Explore the weather in Colombo in other months

Colombo annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 31° / 24° 5 26 0 69 mm
Good
February 32° / 24° 5 23 0 71 mm
Good
March 32° / 26° 9 22 0 135 mm
Ok
April 32° / 27° 13 17 0 246 mm
Ok
May 30° / 27° 18 13 0 637 mm
Ok
June 29° / 26° 21 9 0 736 mm
Ok
July 29° / 26° 20 11 0 595 mm
Ok
August 29° / 26° 20 11 0 608 mm
Ok
September 29° / 26° 15 15 0 475 mm
Ok
October 30° / 26° 15 16 0 383 mm
Ok
November 30° / 25° 14 16 0 300 mm
Ok
December 30° / 25° 9 22 0 159 mm
Ok

Weather in Colombo in September - FAQ

What is the average temperature in Colombo in September?
The average temperature in Colombo in September is 26/29° C.
What is the chance of rain in Colombo in September?
On average, there are 15 rainy days in Colombo during September.
Weather wise, is September a good time to visit Colombo?
The weather in Colombo in September is ok.
Can it snow in Colombo in September?
On average, there are 0 snowy days in Colombo in September.
More about the weather in Colombo