Climate averages 1991–2020
Ambalantota weather
in May.
A hot, wet month: the joint 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Ambalantota: daytime highs average 31.0°C and nights cool to about 25.9°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 101 mm of rain on roughly 19 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 24 min on an average May day.
The nearest other city in this atlas is Matara (57 km away). In May its highs average 29.0°C, 2.0°C cooler than Ambalantota, with 224 mm of rain.
Among the 12 cities listed in Sri Lanka, Ambalantota ranks 6th of 12 for the warmest May highs and 6th of 12 for the driest May (rainfall, lowest first). The mean May high of those 12 cities is 30.6°C; Ambalantota is 0.4°C warmer than that mean.
From May to June, average highs stay level at 31.0°C, and monthly rainfall falls from 101 mm to 60 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Matara in MaySri Lanka · 57 kmHigh 29.0°C · Low 25.4°C · 224 mm rain
- Galle in MaySri Lanka · 90 kmHigh 28.6°C · Low 25.5°C · 279 mm rain
- Kandy in MaySri Lanka · 137 kmHigh 28.0°C · Low 22.0°C · 125 mm rain
- Dehiwala-Mount Lavinia in MaySri Lanka · 150 kmHigh 29.2°C · Low 25.4°C · 293 mm rain
- Colombo in MaySri Lanka · 158 kmHigh 29.5°C · Low 25.4°C · 279 mm rain
- Kalmunai in MaySri Lanka · 169 kmHigh 32.3°C · Low 26.6°C · 59 mm rain
- Negombo in MaySri Lanka · 178 kmHigh 29.6°C · Low 25.7°C · 255 mm rain
- Batticaloa in MaySri Lanka · 192 kmHigh 33.4°C · Low 26.2°C · 50 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.