Sri Lanka weather in September
In September, popular resorts in Sri Lanka (Colombo, Galle, Negombo) average 28°C by day and 25°C at night, and the sea is about 28°C. On average 163 mm of rain falls during the month.
That is the same as in August, and in October days average 28°C.
It is hot: ideal beach and swimming weather. The sea is warm and pleasant for swimming.
Warmest resorts in Sri Lanka in September
| Place | Day | Night | Sea | Rain |
|---|---|---|---|---|
| Vakarai | 33°C | 24°C | 29°C | 80 mm |
| Trincomalee | 32°C | 26°C | 29°C | 81 mm |
| Kalmunai | 32°C | 26°C | 29°C | 91 mm |
| Batticaloa | 32°C | 26°C | 29°C | 91 mm |
| Pottuvil | 31°C | 26°C | 28°C | 110 mm |
| Mullaittivu | 31°C | 27°C | 29°C | 82 mm |
| Eravur Town | 31°C | 27°C | 29°C | 84 mm |
| Keppapularu | 31°C | 27°C | 29°C | 82 mm |
| Mannar | 30°C | 26°C | 29°C | 58 mm |
| Puttalam | 30°C | 25°C | 28°C | 87 mm |
| Jaffna | 30°C | 27°C | 29°C | 73 mm |
| Point Pedro | 30°C | 28°C | 29°C | 97 mm |
Sri Lanka weather in other months
See also
FAQ
Is it warm in Sri Lanka in September?
In September, popular resorts in Sri Lanka (Colombo, Galle, Negombo) average 28°C by day and 25°C at night, and the sea is about 28°C. On average 163 mm of rain falls during the month. It is hot: ideal beach and swimming weather.
What is the sea temperature in Sri Lanka in September?
About 28°C on average. The warmest water is in Kalmunai (29°C).
Where is it warmest in Sri Lanka in September?
The warmest place is Vakarai (33°C by day), followed by Trincomalee (32°C) and Kalmunai (32°C).
Does it rain in Sri Lanka in September?
On average 163 mm of rain falls in the month. It is a fairly wet month, so pack a jacket.
Long-term averages from NASA POWER data (MERRA-2, 2001-2020 reanalysis, CC BY 4.0). Sea temperature is the average water surface temperature at the nearest grid point over the sea. This is climate, not a forecast for a specific day.