Climate averages 1991–2020
Kalmunai weather
in October.
A hot, wet month: the 7th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Kalmunai: daytime highs average 30.2°C and nights cool to about 25.2°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 164 mm of rain on roughly 21 days, which makes October a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 58 min on an average October day.
The nearest other city in this atlas is Batticaloa (37 km away). In October its highs average 31.0°C, 0.7°C warmer than Kalmunai, with 152 mm of rain.
Among the 12 cities listed in Sri Lanka, Kalmunai ranks 4th of 12 for the warmest October highs and 3rd of 12 for the driest October (rainfall, lowest first). The mean October high of those 12 cities is 29.1°C; Kalmunai is 1.1°C warmer than that mean.
From October to November, average highs fall by 2.0°C to 28.2°C, and monthly rainfall rises from 164 mm to 280 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
Kalmunai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.0°C24.0°C | 24.0°C | 186 | 17.8 | 11.712 h |
| February | 27.8°C24.1°C | 24.1°C | 96 | 13.2 | 11.912 h |
| March | 29.5°C24.7°C | 24.7°C | 60 | 10.0 | 12.112 h |
| April | 30.8°C25.8°C | 25.8°C | 70 | 13.3 | 12.312 h |
| May | 32.3°C26.6°C | 26.6°C | 59 | 11.6 | 12.512 h |
| June | 33.2°C26.6°C | 26.6°C | 31 | 6.7 | 12.513 h |
| July | 33.2°C26.4°C | 26.4°C | 31 | 7.5 | 12.513 h |
| August | 32.8°C26.1°C | 26.1°C | 42 | 9.3 | 12.412 h |
| September | 32.0°C25.9°C | 25.9°C | 67 | 13.6 | 12.212 h |
| October, selected | 30.2°C25.2°C | 25.2°C | 164 | 20.8 | 12.012 h |
| November | 28.2°C24.5°C | 24.5°C | 280 | 24.8 | 11.812 h |
| December | 27.2°C24.2°C | 24.2°C | 310 | 22.6 | 11.712 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 · 37 kmHigh 31.0°C · Low 24.8°C · 152 mm rain
- Kandy in OctoberSri Lanka · 133 kmHigh 26.9°C · Low 20.7°C · 257 mm rain
- Trincomalee in OctoberSri Lanka · 146 kmHigh 30.7°C · Low 25.2°C · 186 mm rain
- Ambalantota in OctoberSri Lanka · 169 kmHigh 30.3°C · Low 24.7°C · 141 mm rain
- Matara in OctoberSri Lanka · 217 kmHigh 28.4°C · Low 24.4°C · 250 mm rain
- Negombo in OctoberSri Lanka · 222 kmHigh 28.8°C · Low 24.5°C · 315 mm rain
- Colombo in OctoberSri Lanka · 225 kmHigh 28.8°C · Low 24.1°C · 327 mm rain
- Dehiwala-Mount Lavinia in OctoberSri Lanka · 226 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 Kalmunai) is explained once on the Kalmunai year overview and on the Sources, method and limits page.