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
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
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.
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.
The average wind speed value in September is 4.4 m./s. It makes September one of the most windy months of the year.
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
Colombo on a weather map
|+29°C||E 4 m/s|