Climate averages 1991–2020
Negombo weather
in April.
A hot, wet month: the 3rd warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Negombo: daytime highs average 30.7°C and nights cool to about 25.5°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 163 mm of rain on roughly 26 days, which makes April a wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 17 min on an average April day.
The nearest other city in this atlas is Colombo (30 km away). In April its highs average 30.8°C, about as warm as Negombo, with 167 mm of rain.
Among the 12 cities listed in Sri Lanka, Negombo ranks 8th of 12 for the warmest April highs and 8th of 12 for the driest April (rainfall, lowest first). The mean April high of those 12 cities is 30.7°C; Negombo is level with that mean.
From April to May, average highs fall by 1.1°C to 29.6°C, and monthly rainfall rises from 163 mm to 255 mm.
The annual picture
April 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
Negombo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.2°C23.2°C | 23.2°C | 38 | 6.2 | 11.812 h |
| February | 31.8°C23.7°C | 23.7°C | 40 | 6.5 | 11.912 h |
| March | 31.8°C24.8°C | 24.8°C | 76 | 15.8 | 12.112 h |
| April, selected | 30.7°C25.5°C | 25.5°C | 163 | 26.0 | 12.312 h |
| May | 29.6°C25.7°C | 25.7°C | 255 | 28.6 | 12.412 h |
| June | 28.8°C25.4°C | 25.4°C | 224 | 27.0 | 12.513 h |
| July | 28.5°C25.2°C | 25.2°C | 176 | 24.5 | 12.512 h |
| August | 28.4°C25.0°C | 25.0°C | 165 | 23.9 | 12.412 h |
| September | 28.6°C24.9°C | 24.9°C | 215 | 25.3 | 12.212 h |
| October | 28.8°C24.5°C | 24.5°C | 315 | 26.4 | 12.012 h |
| November | 29.0°C24.0°C | 24.0°C | 271 | 22.3 | 11.812 h |
| December | 29.1°C23.5°C | 23.5°C | 137 | 14.1 | 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
April in nearby cities
- Colombo in AprilSri Lanka · 30 kmHigh 30.8°C · Low 25.0°C · 167 mm rain
- Dehiwala-Mount Lavinia in AprilSri Lanka · 41 kmHigh 30.4°C · Low 25.0°C · 174 mm rain
- Kandy in AprilSri Lanka · 88 kmHigh 29.1°C · Low 21.5°C · 171 mm rain
- Galle in AprilSri Lanka · 136 kmHigh 29.2°C · Low 25.4°C · 147 mm rain
- Matara in AprilSri Lanka · 160 kmHigh 29.9°C · Low 25.2°C · 182 mm rain
- Ambalantota in AprilSri Lanka · 178 kmHigh 31.3°C · Low 25.2°C · 110 mm rain
- Batticaloa in AprilSri Lanka · 212 kmHigh 31.8°C · Low 25.3°C · 59 mm rain
- Trincomalee in AprilSri Lanka · 216 kmHigh 31.7°C · Low 26.2°C · 56 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 Negombo) is explained once on the Negombo year overview and on the Sources, method and limits page.