Colombo weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Fair
Best time to visit: January
What is the weather like in Colombo in March?
In March, Colombo is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 16 days, totalling 101 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a so-so month for a holiday in Colombo.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 56 | 41 | 37 |
| Day | 32° | 32° | 31° |
| Night | 24° | 25° | 25° |
| Sea | 28° | 29° | 30° |
| Sun | 8 h | 7 h | 6 h |
| Rain days | 9 | 16 | 26 |
More details for March
- Daylight
- 12 h 4 min06:18 – 18:22
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 11 km/haverage daily peak
- Cloud cover
- 56 %on average
- Hot days
- 28 days30 °C or more
- Time zone
- UTC+5:30Asia/Colombo
How the score comes together
- Temperatureweight 50 %42 %
- Sunshineweight 20 %73 %
- Few rainy daysweight 30 %18 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Colombo in March: quick answers
Is Colombo hot in March?
Yes. In March, Colombo is hot: daytime highs average 32 °C and nights stay around 25 °C. On about 28 days the thermometer climbs to 30 °C or more.
Can you swim in Colombo in March?
Yes. In March the sea averages 29.2 °C – almost as warm as a bath.
Does it rain much in Colombo in March?
It rains often – on about 16 days, adding up to 101 mm.
Colombo month by month
The whole year in ColomboAll destinations: Sri LankaWhere to go in MarchSea temperature in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)