Climate averages 1991–2020
Dehiwala-Mount Lavinia weather
in March.
A hot, moderately wet month: the warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a hot month in Dehiwala-Mount Lavinia: daytime highs average 31.0°C and nights cool to about 24.5°C. By daytime temperature it is the warmest month of the year.
Expect about 75 mm of rain on roughly 15 days, which makes March a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average March day.
The nearest other city in this atlas is Colombo (11 km away). In March its highs average 31.6°C, 0.6°C warmer than Dehiwala-Mount Lavinia, with 75 mm of rain.
Among the 12 cities listed in Sri Lanka, Dehiwala-Mount Lavinia ranks 4th of 12 for the warmest March highs and joint 8th of 12 for the driest March (rainfall, lowest first). The mean March high of those 12 cities is 30.5°C; Dehiwala-Mount Lavinia is 0.5°C warmer than that mean.
From March to April, average highs fall by 0.6°C to 30.4°C, and monthly rainfall rises from 75 mm to 174 mm.
The annual picture
March 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
Dehiwala-Mount Lavinia climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.9°C23.1°C | 23.1°C | 60 | 8.7 | 11.812 h |
| February | 30.8°C23.7°C | 23.7°C | 58 | 8.6 | 11.912 h |
| March, selected | 31.0°C24.5°C | 24.5°C | 75 | 14.9 | 12.112 h |
| April | 30.4°C25.0°C | 25.0°C | 174 | 24.1 | 12.312 h |
| May | 29.2°C25.4°C | 25.4°C | 293 | 29.1 | 12.412 h |
| June | 28.6°C25.1°C | 25.1°C | 256 | 26.6 | 12.513 h |
| July | 28.2°C24.8°C | 24.8°C | 205 | 25.4 | 12.512 h |
| August | 28.1°C24.7°C | 24.7°C | 183 | 24.4 | 12.312 h |
| September | 28.2°C24.5°C | 24.5°C | 232 | 24.3 | 12.212 h |
| October | 28.5°C24.2°C | 24.2°C | 328 | 26.1 | 12.012 h |
| November | 28.7°C23.7°C | 23.7°C | 330 | 23.8 | 11.812 h |
| December | 29.0°C23.3°C | 23.3°C | 174 | 16.5 | 11.712 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
March in nearby cities
- Colombo in MarchSri Lanka · 11 kmHigh 31.6°C · Low 24.4°C · 75 mm rain
- Negombo in MarchSri Lanka · 41 kmHigh 31.8°C · Low 24.8°C · 76 mm rain
- Galle in MarchSri Lanka · 96 kmHigh 29.6°C · Low 24.7°C · 65 mm rain
- Kandy in MarchSri Lanka · 98 kmHigh 29.5°C · Low 20.4°C · 83 mm rain
- Matara in MarchSri Lanka · 123 kmHigh 30.5°C · Low 24.6°C · 99 mm rain
- Ambalantota in MarchSri Lanka · 150 kmHigh 31.7°C · Low 24.4°C · 58 mm rain
- Batticaloa in MarchSri Lanka · 223 kmHigh 30.2°C · Low 24.0°C · 52 mm rain
- Kalmunai in MarchSri Lanka · 226 kmHigh 29.5°C · Low 24.7°C · 60 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 Dehiwala-Mount Lavinia) is explained once on the Dehiwala-Mount Lavinia year overview and on the Sources, method and limits page.