Climate averages 1991–2020
Ambalantota weather
in August.
A hot, moderately wet month: the joint 3rd warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Ambalantota: daytime highs average 31.2°C and nights cool to about 25.3°C. By daytime temperature it is the joint 3rd warmest of the 12 months.
Expect about 52 mm of rain on roughly 13 days, which makes August a moderately wet month (the 3rd 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 (57 km away). In August its highs average 28.2°C, 3.0°C cooler than Ambalantota, with 159 mm of rain.
Among the 12 cities listed in Sri Lanka, Ambalantota ranks 4th of 12 for the warmest August highs and 6th of 12 for the driest August (rainfall, lowest first). The mean August high of those 12 cities is 30.0°C; Ambalantota is 1.2°C warmer than that mean.
From August to September, average highs fall by 0.3°C to 30.9°C, and monthly rainfall rises from 52 mm to 87 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
Ambalantota climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.6°C23.2°C | 23.2°C | 56 | 8.6 | 11.812 h |
| February | 30.7°C23.6°C | 23.6°C | 42 | 7.9 | 11.912 h |
| March | 31.7°C24.4°C | 24.4°C | 58 | 11.2 | 12.112 h |
| April | 31.3°C25.2°C | 25.2°C | 110 | 18.7 | 12.312 h |
| May | 31.0°C25.9°C | 25.9°C | 101 | 18.7 | 12.412 h |
| June | 31.0°C25.8°C | 25.8°C | 60 | 14.9 | 12.512 h |
| July | 31.2°C25.6°C | 25.6°C | 45 | 13.2 | 12.412 h |
| August, selected | 31.2°C25.3°C | 25.3°C | 52 | 13.0 | 12.312 h |
| September | 30.9°C25.1°C | 25.1°C | 87 | 16.6 | 12.212 h |
| October | 30.3°C24.7°C | 24.7°C | 141 | 20.3 | 12.012 h |
| November | 29.2°C24.1°C | 24.1°C | 231 | 23.0 | 11.812 h |
| December | 28.9°C23.6°C | 23.6°C | 153 | 16.9 | 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 · 57 kmHigh 28.2°C · Low 24.7°C · 159 mm rain
- Galle in AugustSri Lanka · 90 kmHigh 27.7°C · Low 24.8°C · 207 mm rain
- Kandy in AugustSri Lanka · 137 kmHigh 26.8°C · Low 21.1°C · 90 mm rain
- Dehiwala-Mount Lavinia in AugustSri Lanka · 150 kmHigh 28.1°C · Low 24.7°C · 183 mm rain
- Colombo in AugustSri Lanka · 158 kmHigh 28.4°C · Low 24.6°C · 168 mm rain
- Kalmunai in AugustSri Lanka · 169 kmHigh 32.8°C · Low 26.1°C · 42 mm rain
- Negombo in AugustSri Lanka · 178 kmHigh 28.4°C · Low 25.0°C · 165 mm rain
- Batticaloa in AugustSri Lanka · 192 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 Ambalantota) is explained once on the Ambalantota year overview and on the Sources, method and limits page.