Climate averages 1991–2020
Trincomalee weather
in April.
A hot, moderately wet month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Trincomalee: daytime highs average 31.7°C and nights cool to about 26.2°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 56 mm of rain on roughly 10 days, which makes April a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average April day.
The nearest other city in this atlas is Batticaloa (109 km away). In April its highs average 31.8°C, about as warm as Trincomalee, with 59 mm of rain.
Among the 12 cities listed in Sri Lanka, Trincomalee ranks joint 2nd of 12 for the warmest April highs and 3rd of 12 for the driest April (rainfall, lowest first). The mean April high of those 12 cities is 30.7°C; Trincomalee is 0.9°C warmer than that mean.
From April to May, average highs rise by 1.8°C to 33.5°C, and monthly rainfall falls from 56 mm to 48 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Trincomalee climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.9°C24.1°C | 24.1°C | 126 | 14.5 | 11.712 h |
| February | 27.9°C24.4°C | 24.4°C | 74 | 9.6 | 11.812 h |
| March | 30.0°C25.1°C | 25.1°C | 40 | 7.1 | 12.112 h |
| April, selected | 31.7°C26.2°C | 26.2°C | 56 | 10.1 | 12.312 h |
| May | 33.5°C26.7°C | 26.7°C | 48 | 8.1 | 12.513 h |
| June | 33.8°C26.6°C | 26.6°C | 18 | 3.1 | 12.613 h |
| July | 33.6°C26.3°C | 26.3°C | 31 | 5.5 | 12.613 h |
| August | 33.3°C26.0°C | 26.0°C | 45 | 7.8 | 12.412 h |
| September | 33.0°C25.8°C | 25.8°C | 65 | 10.7 | 12.212 h |
| October | 30.7°C25.2°C | 25.2°C | 186 | 18.6 | 11.912 h |
| November | 28.1°C24.5°C | 24.5°C | 301 | 24.1 | 11.712 h |
| December | 27.1°C24.3°C | 24.3°C | 276 | 20.9 | 11.612 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Batticaloa in AprilSri Lanka · 109 kmHigh 31.8°C · Low 25.3°C · 59 mm rain
- Kalmunai in AprilSri Lanka · 146 kmHigh 30.8°C · Low 25.8°C · 70 mm rain
- Kandy in AprilSri Lanka · 157 kmHigh 29.1°C · Low 21.5°C · 171 mm rain
- Point Pedro in AprilSri Lanka · 176 kmHigh 31.7°C · Low 27.0°C · 34 mm rain
- Jaffna in AprilSri Lanka · 181 kmHigh 31.4°C · Low 27.3°C · 45 mm rain
- Negombo in AprilSri Lanka · 216 kmHigh 30.7°C · Low 25.5°C · 163 mm rain
- Colombo in AprilSri Lanka · 238 kmHigh 30.8°C · Low 25.0°C · 167 mm rain
- Dehiwala-Mount Lavinia in AprilSri Lanka · 244 kmHigh 30.4°C · Low 25.0°C · 174 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Trincomalee) is explained once on the Trincomalee year overview and on the Sources, method and limits page.