worldweather31°Cexceptionally cool
usually 31°C–33°C
cooler than 90% of similar days
night: exceptionally warm
rain: more rain than usual
wind: lighter than usual
Weather in Trincomalee - 14-day forecast
Detailed weather forecast for Trincomalee, Sri Lanka: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Trincomalee
today🌧️
31°💧 4.4 mm
Sun🌧️
32°💧 1.6 mm
Mon🌧️
32°💧 0.6 mm
Tue☁️
32°💧 0.2 mm
Wed🌧️
33°💧 0.1 mm
Thu☁️
32°💧 0.6 mm
Fri🌧️
32°💧 1.8 mm
Sat🌧️
32°💧 0.8 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Trincomalee, the forecast high is 31°C. Typical daytime temperatures at this time of year range from 31°C to 33°C, so it will be exceptionally cool. It is cooler than 90% of similar days.
32°Cnear normal
usually 31°C–33°C
night: exceptionally warm
rain: more rain than usual
wind: typical
32°Cnear normal
usually 31°C–33°C
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
32°Cnear normal
usually 31°C–33°C
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
33°Cwarmer than usual
usually 31°C–33°C
warmer than 71% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
32°Cnear normal
usually 31°C–33°C
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
32°Cnear normal
usually 31°C–33°C
night: exceptionally warm
rain: more rain than usual
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 32°C by day. The coolest year was 1983 (30°C) and the warmest was 1987 (34°C). The current forecast averages 32°C - close to the historical median.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - Trincomalee
Day-by-day forecast for Trincomalee
Saturday5 September 2026
🌧️31°light rain
Sunday6 September 2026
🌧️32°light rain
Monday7 September 2026
🌧️32°light rain
Tuesday8 September 2026
☁️32°overcast clouds
Wednesday9 September 2026
🌧️33°light rain
Thursday10 September 2026
☁️32°overcast clouds
Friday11 September 2026
🌧️32°light rain
Saturday12 September 2026
🌧️32°light rain
Sunday13 September 2026
☁️32°overcast clouds
Monday14 September 2026
🌧️31°light rain
Tuesday15 September 2026
☁️31°broken clouds
Wednesday16 September 2026
☁️33°broken clouds
Thursday17 September 2026
☁️32°broken clouds
Friday18 September 2026
☁️33°overcast clouds
Saturday19 September 2026
☁️33°overcast clouds
Sunday20 September 2026
☁️33°overcast clouds
UV index in Trincomalee - is it safe to sunbathe?
Today the UV index in Trincomalee is 9 (very high) - unprotected fair skin can burn in about 25 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.
Sea temperature - Trincomalee
Water today
30°C
Week avg
29°C
Waves today
0.2 m
How's the water?
very warm
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Upcoming public holidays in Sri Lanka: Binara Full Moon Poya Day — 26 September · Vap Full Moon Poya Day — 25 October · Deepavali — 8 November. Full calendar and travel notes
Nearby and related places
FAQ - Trincomalee weather
What is the weather like in Trincomalee today?
Today it is about 31° during the day and 28° at night, light rain.
How far ahead can I check the forecast for Trincomalee?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.