The highest day temperature in July 2025 was 98°F. The lowest night temperature was 82°F. The average values for day and night temperatures during July were 93.4°F и 84.5°F respectivly.

The average sea surface temperature in July 2025 for Trincomalee was 87.8°F. The maximum and minimum values were 87.2°F and 88.4°F respectively.

Most of the days in July are sunny but you can also expect cloudy and gloomy days.

Precipitation total in July for Trincomalee is 2.2 in. It makes july one of the least rainy months of the year.

The average wind speed in July is 15.1 mph. It makes July one of the most windy 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 July is 8.5 hours.