Climate averages 1991–2020
Ambalantota weather
in October.
A hot, wet month: the 9th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Ambalantota: daytime highs average 30.3°C and nights cool to about 24.7°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 141 mm of rain on roughly 20 days, which makes October a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average October day.
The nearest other city in this atlas is Matara (57 km away). In October its highs average 28.4°C, 2.0°C cooler than Ambalantota, with 250 mm of rain.
Among the 12 cities listed in Sri Lanka, Ambalantota ranks 3rd of 12 for the warmest October highs and 1st of 12 for the driest October (rainfall, lowest first). The mean October high of those 12 cities is 29.1°C; Ambalantota is 1.2°C warmer than that mean.
From October to November, average highs fall by 1.1°C to 29.2°C, and monthly rainfall rises from 141 mm to 231 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Matara in OctoberSri Lanka · 57 kmHigh 28.4°C · Low 24.4°C · 250 mm rain
- Galle in OctoberSri Lanka · 90 kmHigh 27.8°C · Low 24.5°C · 263 mm rain
- Kandy in OctoberSri Lanka · 137 kmHigh 26.9°C · Low 20.7°C · 257 mm rain
- Dehiwala-Mount Lavinia in OctoberSri Lanka · 150 kmHigh 28.5°C · Low 24.2°C · 328 mm rain
- Colombo in OctoberSri Lanka · 158 kmHigh 28.8°C · Low 24.1°C · 327 mm rain
- Kalmunai in OctoberSri Lanka · 169 kmHigh 30.2°C · Low 25.2°C · 164 mm rain
- Negombo in OctoberSri Lanka · 178 kmHigh 28.8°C · Low 24.5°C · 315 mm rain
- Batticaloa in OctoberSri Lanka · 192 kmHigh 31.0°C · Low 24.8°C · 152 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.