Climate averages 1991–2020
Jaffna weather
in July.
A hot, fairly dry month: the 4th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Jaffna: daytime highs average 30.5°C and nights cool to about 27.5°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 33 mm of rain on roughly 9 days, which makes July a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 38 min on an average July day.
The nearest other city in this atlas is Point Pedro (30 km away). In July its highs average 31.1°C, 0.7°C warmer than Jaffna, with 21 mm of rain.
Among the 12 cities listed in Sri Lanka, Jaffna ranks 6th of 12 for the warmest July highs and 5th of 12 for the driest July (rainfall, lowest first). The mean July high of those 12 cities is 30.2°C; Jaffna is 0.3°C warmer than that mean.
From July to August, average highs fall by 0.2°C to 30.3°C, and monthly rainfall rises from 33 mm to 48 mm.
The annual picture
July 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 | 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, selected | 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
July in nearby cities
- Point Pedro in JulySri Lanka · 30 kmHigh 31.1°C · Low 27.3°C · 21 mm rain
- Pattukkottai in JulyIndia · 113 kmHigh 35.3°C · Low 26.5°C · 54 mm rain
- Nagapattinam in JulyIndia · 123 kmHigh 32.8°C · Low 27.5°C · 41 mm rain
- Kāraikāl in JulyIndia · 140 kmHigh 32.8°C · Low 27.5°C · 40 mm rain
- Kāraikkudi in JulyIndia · 143 kmHigh 35.0°C · Low 25.7°C · 63 mm rain
- Pudukkottai in JulyIndia · 152 kmHigh 35.2°C · Low 26.0°C · 46 mm rain
- Paramagudi in JulyIndia · 156 kmHigh 36.0°C · Low 26.1°C · 63 mm rain
- Thanjavur in JulyIndia · 156 kmHigh 35.9°C · Low 26.5°C · 57 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.