Climate averages 1991–2020
Jaffna weather
in January.
A warm, moderately wet month: one of the coolest and the 8th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Jaffna: daytime highs average 26.8°C and nights cool to about 24.4°C. By daytime temperature it is one of the coolest months of the year.
Expect about 62 mm of rain on roughly 7 days, which makes January a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 38 min on an average January day.
The nearest other city in this atlas is Point Pedro (30 km away). In January its highs average 26.9°C, about as warm as Jaffna, with 66 mm of rain.
Among the 12 cities listed in Sri Lanka, Jaffna ranks 11th of 12 for the warmest January highs and 5th of 12 for the driest January (rainfall, lowest first). The mean January high of those 12 cities is 28.2°C; Jaffna is 1.3°C cooler than that mean.
From January to February, average highs rise by 1.3°C to 28.1°C, and monthly rainfall falls from 62 mm to 26 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
Jaffna climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 26.8°C24.4°C | 24.4°C | 62 | 6.7 | 11.612 h |
| February | 28.1°C24.8°C | 24.8°C | 26 | 4.3 | 11.812 h |
| March | 30.2°C25.9°C | 25.9°C | 22 | 3.3 | 12.112 h |
| April | 31.4°C27.3°C | 27.3°C | 45 | 7.5 | 12.312 h |
| May | 31.2°C28.1°C | 28.1°C | 58 | 7.6 | 12.613 h |
| June | 30.7°C27.9°C | 27.9°C | 27 | 5.6 | 12.713 h |
| July | 30.5°C27.5°C | 27.5°C | 33 | 9.0 | 12.613 h |
| August | 30.3°C27.1°C | 27.1°C | 48 | 10.4 | 12.412 h |
| September | 30.1°C26.9°C | 26.9°C | 67 | 12.1 | 12.212 h |
| October | 29.0°C26.0°C | 26.0°C | 208 | 20.9 | 11.912 h |
| November | 27.6°C25.1°C | 25.1°C | 313 | 22.1 | 11.712 h |
| December | 26.8°C24.7°C | 24.7°C | 199 | 16.3 | 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
- Point Pedro in JanuarySri Lanka · 30 kmHigh 26.9°C · Low 24.1°C · 66 mm rain
- Pattukkottai in JanuaryIndia · 113 kmHigh 29.0°C · Low 20.9°C · 25 mm rain
- Nagapattinam in JanuaryIndia · 123 kmHigh 26.9°C · Low 23.9°C · 39 mm rain
- Kāraikāl in JanuaryIndia · 140 kmHigh 26.9°C · Low 23.9°C · 34 mm rain
- Kāraikkudi in JanuaryIndia · 143 kmHigh 29.3°C · Low 20.5°C · 18 mm rain
- Pudukkottai in JanuaryIndia · 152 kmHigh 29.4°C · Low 20.3°C · 17 mm rain
- Paramagudi in JanuaryIndia · 156 kmHigh 29.4°C · Low 21.2°C · 21 mm rain
- Thanjavur in JanuaryIndia · 156 kmHigh 29.2°C · Low 20.4°C · 20 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 Jaffna) is explained once on the Jaffna year overview and on the Sources, method and limits page.