Climate averages 1991–2020
Trincomalee weather
in January.
A warm, wet month: the coolest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Trincomalee: daytime highs average 26.9°C and nights cool to about 24.1°C. By daytime temperature it is the coolest month of the year.
Expect about 126 mm of rain on roughly 15 days, which makes January a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 41 min on an average January day.
The nearest other city in this atlas is Batticaloa (109 km away). In January its highs average 27.1°C, about as warm as Trincomalee, with 170 mm of rain.
Among the 12 cities listed in Sri Lanka, Trincomalee ranks joint 9th of 12 for the warmest January highs and 10th of 12 for the driest January (rainfall, lowest first). The mean January high of those 12 cities is 28.2°C; Trincomalee is 1.3°C cooler than that mean.
From January to February, average highs rise by 1.0°C to 27.9°C, and monthly rainfall falls from 126 mm to 74 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Batticaloa in JanuarySri Lanka · 109 kmHigh 27.1°C · Low 23.2°C · 170 mm rain
- Kalmunai in JanuarySri Lanka · 146 kmHigh 27.0°C · Low 24.0°C · 186 mm rain
- Kandy in JanuarySri Lanka · 157 kmHigh 25.7°C · Low 19.1°C · 110 mm rain
- Point Pedro in JanuarySri Lanka · 176 kmHigh 26.9°C · Low 24.1°C · 66 mm rain
- Jaffna in JanuarySri Lanka · 181 kmHigh 26.8°C · Low 24.4°C · 62 mm rain
- Negombo in JanuarySri Lanka · 216 kmHigh 30.2°C · Low 23.2°C · 38 mm rain
- Colombo in JanuarySri Lanka · 238 kmHigh 30.4°C · Low 22.9°C · 53 mm rain
- Dehiwala-Mount Lavinia in JanuarySri Lanka · 244 kmHigh 29.9°C · Low 23.1°C · 60 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.