Climate averages 1991–2020
Trincomalee weather
in August.
A hot, moderately wet month: the 4th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Trincomalee: daytime highs average 33.3°C and nights cool to about 26.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 45 mm of rain on roughly 8 days, which makes August a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 24 min on an average August day.
The nearest other city in this atlas is Batticaloa (109 km away). In August its highs average 34.2°C, 0.9°C warmer than Trincomalee, with 31 mm of rain.
Among the 12 cities listed in Sri Lanka, Trincomalee ranks 2nd of 12 for the warmest August highs and 4th of 12 for the driest August (rainfall, lowest first). The mean August high of those 12 cities is 30.0°C; Trincomalee is 3.3°C warmer than that mean.
From August to September, average highs fall by 0.3°C to 33.0°C, and monthly rainfall rises from 45 mm to 65 mm.
The annual picture
August 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 | 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, selected | 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
August in nearby cities
- Batticaloa in AugustSri Lanka · 109 kmHigh 34.2°C · Low 26.1°C · 31 mm rain
- Kalmunai in AugustSri Lanka · 146 kmHigh 32.8°C · Low 26.1°C · 42 mm rain
- Kandy in AugustSri Lanka · 157 kmHigh 26.8°C · Low 21.1°C · 90 mm rain
- Point Pedro in AugustSri Lanka · 176 kmHigh 31.0°C · Low 26.9°C · 32 mm rain
- Jaffna in AugustSri Lanka · 181 kmHigh 30.3°C · Low 27.1°C · 48 mm rain
- Negombo in AugustSri Lanka · 216 kmHigh 28.4°C · Low 25.0°C · 165 mm rain
- Colombo in AugustSri Lanka · 238 kmHigh 28.4°C · Low 24.6°C · 168 mm rain
- Dehiwala-Mount Lavinia in AugustSri Lanka · 244 kmHigh 28.1°C · Low 24.7°C · 183 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.