Climate averages 1991–2020
Galle weather
in August.
A warm, very wet month: one of the coolest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Galle: daytime highs average 27.7°C and nights cool to about 24.8°C. By daytime temperature it is one of the coolest months of the year.
Expect about 207 mm of rain on roughly 27 days, which makes August a very wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average August day.
The nearest other city in this atlas is Matara (38 km away). In August its highs average 28.2°C, about as warm as Galle, with 159 mm of rain.
Among the 12 cities listed in Sri Lanka, Galle ranks 11th of 12 for the warmest August highs and 12th of 12 for the driest August (rainfall, lowest first). The mean August high of those 12 cities is 30.0°C; Galle is 2.3°C cooler than that mean.
From August to September, average highs stay level at 27.7°C, and monthly rainfall rises from 207 mm to 240 mm.
The annual picture
August 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
Galle climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.3°C23.6°C | 23.6°C | 64 | 12.2 | 11.812 h |
| February | 29.0°C24.0°C | 24.0°C | 51 | 10.3 | 11.912 h |
| March | 29.6°C24.7°C | 24.7°C | 65 | 13.9 | 12.112 h |
| April | 29.2°C25.4°C | 25.4°C | 147 | 22.6 | 12.312 h |
| May | 28.6°C25.5°C | 25.5°C | 279 | 28.6 | 12.412 h |
| June | 28.1°C25.2°C | 25.2°C | 244 | 27.6 | 12.512 h |
| July | 27.8°C24.9°C | 24.9°C | 214 | 27.5 | 12.412 h |
| August, selected | 27.7°C24.8°C | 24.8°C | 207 | 27.3 | 12.312 h |
| September | 27.7°C24.7°C | 24.7°C | 240 | 26.5 | 12.212 h |
| October | 27.8°C24.5°C | 24.5°C | 263 | 26.5 | 12.012 h |
| November | 28.0°C24.2°C | 24.2°C | 250 | 23.5 | 11.912 h |
| December | 28.0°C23.9°C | 23.9°C | 148 | 18.5 | 11.812 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
August in nearby cities
- Matara in AugustSri Lanka · 38 kmHigh 28.2°C · Low 24.7°C · 159 mm rain
- Ambalantota in AugustSri Lanka · 90 kmHigh 31.2°C · Low 25.3°C · 52 mm rain
- Dehiwala-Mount Lavinia in AugustSri Lanka · 96 kmHigh 28.1°C · Low 24.7°C · 183 mm rain
- Colombo in AugustSri Lanka · 107 kmHigh 28.4°C · Low 24.6°C · 168 mm rain
- Negombo in AugustSri Lanka · 136 kmHigh 28.4°C · Low 25.0°C · 165 mm rain
- Kandy in AugustSri Lanka · 146 kmHigh 26.8°C · Low 21.1°C · 90 mm rain
- Kalmunai in AugustSri Lanka · 235 kmHigh 32.8°C · Low 26.1°C · 42 mm rain
- Batticaloa in AugustSri Lanka · 247 kmHigh 34.2°C · Low 26.1°C · 31 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 Galle) is explained once on the Galle year overview and on the Sources, method and limits page.