Climate averages 1991–2020
Batticaloa weather
in December.
A warm, very wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Batticaloa: daytime highs average 27.3°C and nights cool to about 23.5°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 302 mm of rain on roughly 22 days, which makes December a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 41 min on an average December day.
The nearest other city in this atlas is Kalmunai (37 km away). In December its highs average 27.2°C, about as warm as Batticaloa, with 310 mm of rain.
Among the 12 cities listed in Sri Lanka, Batticaloa ranks 7th of 12 for the warmest December highs and 11th of 12 for the driest December (rainfall, lowest first). The mean December high of those 12 cities is 27.8°C; Batticaloa is 0.5°C cooler than that mean.
From December to January, average highs fall by 0.2°C to 27.1°C, and monthly rainfall falls from 302 mm to 170 mm.
The annual picture
December 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
Batticaloa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.1°C23.2°C | 23.2°C | 170 | 15.7 | 11.712 h |
| February | 28.2°C23.3°C | 23.3°C | 89 | 11.2 | 11.912 h |
| March | 30.2°C24.0°C | 24.0°C | 52 | 8.2 | 12.112 h |
| April | 31.8°C25.3°C | 25.3°C | 59 | 10.5 | 12.312 h |
| May | 33.4°C26.2°C | 26.2°C | 50 | 9.3 | 12.512 h |
| June | 34.5°C26.6°C | 26.6°C | 25 | 5.3 | 12.613 h |
| July | 34.5°C26.5°C | 26.5°C | 24 | 5.8 | 12.513 h |
| August | 34.2°C26.1°C | 26.1°C | 31 | 7.3 | 12.412 h |
| September | 33.2°C25.6°C | 25.6°C | 48 | 11.1 | 12.212 h |
| October | 31.0°C24.8°C | 24.8°C | 152 | 18.9 | 12.012 h |
| November | 28.5°C24.0°C | 24.0°C | 283 | 23.6 | 11.812 h |
| December, selected | 27.3°C23.5°C | 23.5°C | 302 | 21.6 | 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
December in nearby cities
- Kalmunai in DecemberSri Lanka · 37 kmHigh 27.2°C · Low 24.2°C · 310 mm rain
- Trincomalee in DecemberSri Lanka · 109 kmHigh 27.1°C · Low 24.3°C · 276 mm rain
- Kandy in DecemberSri Lanka · 126 kmHigh 25.5°C · Low 19.8°C · 214 mm rain
- Ambalantota in DecemberSri Lanka · 192 kmHigh 28.9°C · Low 23.6°C · 153 mm rain
- Negombo in DecemberSri Lanka · 212 kmHigh 29.1°C · Low 23.5°C · 137 mm rain
- Colombo in DecemberSri Lanka · 221 kmHigh 29.2°C · Low 23.2°C · 164 mm rain
- Dehiwala-Mount Lavinia in DecemberSri Lanka · 223 kmHigh 29.0°C · Low 23.3°C · 174 mm rain
- Matara in DecemberSri Lanka · 234 kmHigh 28.6°C · Low 23.7°C · 199 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 Batticaloa) is explained once on the Batticaloa year overview and on the Sources, method and limits page.