Trincomalee Weather in October
What's the weather like in Trincomalee (Eastern Province) in October 2025?
The climate in Trincomalee during October can be summarized as very hot, humid and very wet.
October is in the fall / autumn in Trincomalee and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 25°C (76°F) is normal.
| Daytime temperature | 31.8°C 89.2°F |
|---|---|
| Nightly temperature | 24.6°C 76.3°F |
| Average temperature | 28.2°C 82.8°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 223 mm 8.8 ins |
| Rainy days | 12 days |
| Sea temperature | 29.1°C 84.3°F |
| Humidity | 74% |
| Windspeed | 10.4kph 7 mph |
On average October is the 3rd wettest month of the year in Trincomalee with around 223mm 8.8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
October temperatures in Trincomalee
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Trincomalee in October 2025.
Other monthly averages
Best places to visit in October
Trincomalee weather stats
| Hottest month: | June | 34.6°C 94.3°F |
|---|---|---|
| Driest month: | June | 25mm 1ins |
| Sunniest month: | March | 9.2hrs |
| Coldest month: | January | 27.8°C 82°F |
| Wettest month: | December | 367mm 14.4ins |
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