City in Western Province, Sri Lanka
Colombo weather by month and the best time to visit
When to go to Colombo
Dec–Mar is driest and least humid. Apr is hot; May–Jun and Oct–Nov bring heavy rain and some street flooding.
Colombo weather by month
Average daily high, rainfall and conditions.
- Jan30°76 mm
- Feb31°71 mm
- Mar31°115 mm
- Apr31°226 mm
- May30°224 mm
- Jun29°143 mm
- Jul28°99 mm
- Aug28°113 mm
- Sep29°162 mm
- Oct29°292 mm
- Nov29°304 mm
- Dec29°175 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 30°C85°F | 23°C73°F | 76 mm | 80% | Pleasant |
| February | 31°C87°F | 23°C74°F | 71 mm | 77% | Pleasant |
| March | 31°C89°F | 25°C77°F | 115 mm | 76% | Hot & humid |
| April | 31°C87°F | 26°C79°F | 226 mm | 81% | Rainy |
| May | 30°C85°F | 26°C80°F | 224 mm | 86% | Rainy |
| June | 29°C84°F | 26°C79°F | 143 mm | 87% | Pleasant |
| July | 28°C83°F | 25°C78°F | 99 mm | 87% | Pleasant |
| August | 28°C83°F | 25°C77°F | 113 mm | 86% | Pleasant |
| September | 29°C84°F | 25°C78°F | 162 mm | 85% | Rainy |
| October | 29°C84°F | 25°C77°F | 292 mm | 85% | Rainy |
| November | 29°C84°F | 25°C76°F | 304 mm | 85% | Very wet |
| December | 29°C84°F | 24°C75°F | 175 mm | 84% | Rainy |
Best months across Sri Lanka
| Place | Best months | Warmest month |
|---|---|---|
| Ella | Jan–Mar, Jul–Aug | Aug (27°C) |
| Colombo | Dec–Mar | Mar (31°C) |
| Kandy | Jan–Apr | Apr (30°C) |
| Galle | Dec–Mar | Mar (29°C) |
| Mirissa | Dec–Mar | Mar (30°C) |
| Weligama | Nov–Mar | Mar (30°C) |
| Arugam Bay | May–Sep | Aug (32°C) |
| Sigiriya | Jan–Mar, Jul–Sep | Apr (32°C) |
| Unawatuna | Dec–Mar | Mar (29°C) |
| Hikkaduwa | Dec–Mar | Mar (29°C) |
| Nuwara Eliya | Feb–Apr, Aug | Mar (20°C) |
| Negombo | Dec–Mar | Mar (31°C) |
| Ahangama | Nov–Mar | Mar (30°C) |
| Hiriketiya | Nov–Mar | Mar (30°C) |
| Trincomalee | May–Sep | Aug (32°C) |
| Bentota | Dec–Apr | Mar (30°C) |
| Tangalle | Dec–Apr | Mar (30°C) |
| Jaffna | Feb–Mar, Jul–Aug | Apr (32°C) |
Quick answers
What is the best month to visit Colombo?
Dec–Mar. Dec–Mar is driest and least humid. Apr is hot; May–Jun and Oct–Nov bring heavy rain and some street flooding.
When is the rainy season in Colombo?
Rain peaks in November with about 304 mm. Months with 150 mm or more: Apr–May, Sep–Dec.
What is the hottest month in Colombo?
March, with average highs of 31°C (89°F).
How cold does Colombo get?
The coolest nights are in January, averaging 23°C (73°F).
More about Colombo
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Sources
- NASA POWER climatology (2001–2020)
- Bandaranaike International Airport
- Sri Lanka Railways
- PickMe
- Asiri Health
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 0.8°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.