Colombo, Sri Lanka Weather
Colombo hourly forecast: next 24 hours
Today's high of 81°F (27°C) is right in line with the typical August high of 83°F (28°C).
Current conditions in detail
Colombo weather tomorrow (Tuesday, August 18)
Tomorrow in Colombo looks patchy rain nearby, with a high of 80° and an overnight low of 79°. There is a 64% chance of rain - plan accordingly. Winds top out near 24 mph, and the UV index reaches 12 (extreme).
Colombo 14-day forecast
About the weather in Colombo
Weather in Colombo is shaped by its tropical wet-and-dry climate - expect year-round warmth split between a rainy season and a pronounced dry season. April afternoons typically reach 88°F (31°C), while November highs hover near 84°F (29°C). Annual precipitation averages 111.7 inches (2836 mm) over about 280 rainy days.
Colombo weather: quick facts
- Hottest month: April - highs near 88°F (31°C)
- Coldest month: November - highs near 84°F (29°C)
- Record high: 96°F (36°C) · Record low: 65°F (18°C) (2015–2024)
- Wettest month: May (30 rainy days) · Sunniest: February (11.1 h sun/day)
- Climate type: tropical wet-and-dry - year-round warmth split between a rainy season and a pronounced dry season
Temperatures through the year
The warmest stretch of the year centers on April. Highs average 88°F (31°C) and overnight lows stay near 77°F (25°C). The coolest month is November, with typical highs of 84°F (29°C) and lows around 74°F (24°C). Based on 2015–2024 weather data, temperatures have reached as high as 96°F (36°C) and dropped as low as 65°F (18°C).
Rain, sun and snow
May is usually the wettest month. It brings about 16.5 inches (418 mm) of rain over 30 days, while February is the driest. February brings the most sunshine, averaging 11.1 hours of sun a day.
Season by season
March through May
March through May in Colombo brings hot afternoons, with daytime highs averaging 87°F (31°C) and nights around 77°F (25°C); expect showers on roughly 72 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
June through August
June through August in Colombo is hot, with daytime highs averaging 84°F (29°C) and nights around 77°F (25°C); expect showers on roughly 85 days across the season.
September through November
September through November in Colombo is hot, with daytime highs averaging 84°F (29°C) and nights around 76°F (24°C); expect showers on roughly 82 days across the season.
December through February
December through February in Colombo runs hot, with daytime highs averaging 87°F (30°C) and nights around 74°F (23°C); expect showers on roughly 40 days across the season.
Average temperatures in Colombo by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 87° | 73° | 11 | 3.1 in | 10.5 h/day | 77% |
| February | 88° | 74° | 11 | 2.1 in | 11.1 h/day | 76% |
| March | 88° | 76° | 18 | 4.2 in | 10.9 h/day | 80% |
| April | 88° | 77° | 25 | 6.2 in | 10.4 h/day | 83% |
| May | 85° | 78° | 30 | 16.5 in | 8.4 h/day | 86% |
| June | 84° | 78° | 29 | 12.2 in | 9.5 h/day | 86% |
| July | 84° | 78° | 28 | 8.8 in | 9.8 h/day | 85% |
| August | 83° | 77° | 28 | 9.5 in | 9.7 h/day | 86% |
| September | 83° | 77° | 28 | 11.6 in | 8.8 h/day | 86% |
| October | 83° | 76° | 29 | 15.4 in | 8.2 h/day | 87% |
| November | 84° | 74° | 25 | 15.4 in | 7.7 h/day | 88% |
| December | 85° | 74° | 18 | 6.7 in | 9.2 h/day | 84% |