The highest day temperature in October 2025 was 94°F. The lowest night temperature was 80°F. The average values for day and night temperatures during October were 88.0°F и 82.4°F respectivly.

The average sea surface temperature in October 2025 for Trincomalee was 88.2°F. The maximum and minimum values were 87.4°F and 89.2°F respectively.

Most of the days in October are cloudy but you can also expect sunny or gloomy days.

Precipitation total in October for Trincomalee is 7.7 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 8.9 mph. It makes October one of the most windless months of the year for Trincomalee.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Trincomalee in October is 7.0 hours.