World Resorts Sri Lanka Colombo Weather

Colombo weather in September

Weather in Colombo: September

Average day temperature: 29.8°C
Average night temperature: 25.9°C
Sea water temperature: 28.0°C
Number of sunny days: 2 days
Day length: 12.1 - 12.2 hours
Number of rainy days: 19 days
Precipitation totals: 401.9 mm.

Air temperature in September, °C

Show year:
2021
2020
2019

The highest day temperature during September of 2021 was 30°C. At the same time the lowest night temperature was 25°C. Daily and nightly averages during September were 28.9°C and 25.7°C.

Sea water temperature in Colombo in September, °C

Show year:
2021
2020
2019

The average sea water temperature in September of 2021 was 28.5°C. The highest and lowest sea temperatures during the month were class="nb">28.9°C and 28.2°C.

Sunny, partly cloudy and cloudy days

Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in September, mm

Precipitation total value in Colombo in September is 401.9 mm. It makes september one of the most rainy months of the year.

Wind speed in September, m/s

The average wind speed value in September is 4.4 m./s. It makes September one of the most windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 5.1.

Best time for vacation in Colombo

Sunniest months:
January 18 days
February 17 days
March 16 days
Warmest months:
March 32.6 °C
April 32.6 °C
February 32.1 °C
Warmest sea temp:
April 30.1 °C
May 29.5 °C
March 29.3 °C
Coldest months:
July 29.6 °C
August 29.7 °C
September 29.8 °C
Rainiest months:
June 21 days
August 21 days
July 20 days
Windiest months:
June 4.8 m/s
August 4.7 m/s
July 4.7 m/s

Colombo on a weather map

Colombo
+28°C
NE 5 m/s
Feels like: +32°C
Precip.: 74%
Places in Sri Lanka:
Name
С°
+28°C
+31°C
+28°C
+31°C
+29°C
+28°C
+32°C
+29°C
+28°C
+31°C
+32°C
+33°C
+31°C
+30°C
24 Hours Forecast
Colombo
Local time: 13:54
August 18, thursday
1500
28°C
NE
5 m/s
1800
26°C
NE
4 m/s
2100
26°C
NE
4 m/s
August 19, friday
0000
25°C
NE
4 m/s
0300
25°C
NE
4 m/s
0600
25°C
NE
3 m/s
0900
27°C
NE
5 m/s
1200
29°C
NE
5 m/s