Climate averages 1991–2020
Trincomalee weather
in October.
A hot, very wet month: the 7th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Trincomalee: daytime highs average 30.7°C and nights cool to about 25.2°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 186 mm of rain on roughly 19 days, which makes October a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 56 min on an average October day.
The nearest other city in this atlas is Batticaloa (109 km away). In October its highs average 31.0°C, about as warm as Trincomalee, with 152 mm of rain.
Among the 12 cities listed in Sri Lanka, Trincomalee ranks 2nd of 12 for the warmest October highs and 5th of 12 for the driest October (rainfall, lowest first). The mean October high of those 12 cities is 29.1°C; Trincomalee is 1.6°C warmer than that mean.
From October to November, average highs fall by 2.6°C to 28.1°C, and monthly rainfall rises from 186 mm to 301 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Batticaloa in OctoberSri Lanka · 109 kmHigh 31.0°C · Low 24.8°C · 152 mm rain
- Kalmunai in OctoberSri Lanka · 146 kmHigh 30.2°C · Low 25.2°C · 164 mm rain
- Kandy in OctoberSri Lanka · 157 kmHigh 26.9°C · Low 20.7°C · 257 mm rain
- Point Pedro in OctoberSri Lanka · 176 kmHigh 29.3°C · Low 25.8°C · 172 mm rain
- Jaffna in OctoberSri Lanka · 181 kmHigh 29.0°C · Low 26.0°C · 208 mm rain
- Negombo in OctoberSri Lanka · 216 kmHigh 28.8°C · Low 24.5°C · 315 mm rain
- Colombo in OctoberSri Lanka · 238 kmHigh 28.8°C · Low 24.1°C · 327 mm rain
- Dehiwala-Mount Lavinia in OctoberSri Lanka · 244 kmHigh 28.5°C · Low 24.2°C · 328 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.