Western Province weather in May
May is a fair month to visit Western Province: highs of 29°C (84°F) and about 224 mm (8.8 in) of rain on average. Nights average 26°C (78°F) and cloud cover 73% (NASA POWER, 2001–2025 averages). It is the 4th wettest month of the year and the 4th warmest. Compared with April, it is cooler and about as wet; June brings highs of 28°C (83°F) and 143 mm (5.6 in) of rain.
Figures are long-term averages for Colombo, the largest city in Western Province. See below for other places.
Is May a good time to visit Western Province?
fair month Weather score 48/100.
May is a fair month in Western Province. The weather is usually best in Jul–Aug, Jan–Mar.
Does it rain a lot in Western Province in May?
Yes, it is one of the rainy months: about 224 mm (8.8 in) falls in an average May. It is the 4th wettest month of the year.
How warm is Western Province in May?
Days average 29°C (84°F) and nights 26°C (78°F).
Western Province weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 29°C (84°F) | 22°C (72°F) | 76 mm | 55% | best |
| February | 30°C (86°F) | 23°C (73°F) | 71 mm | 51% | best |
| March | 31°C (87°F) | 24°C (76°F) | 115 mm | 54% | best |
| April | 30°C (86°F) | 25°C (78°F) | 226 mm | 64% | fair |
| May | 29°C (84°F) | 26°C (78°F) | 224 mm | 73% | fair |
| June | 28°C (83°F) | 25°C (77°F) | 143 mm | 75% | fair |
| July | 28°C (82°F) | 25°C (76°F) | 99 mm | 75% | best |
| August | 28°C (82°F) | 25°C (76°F) | 113 mm | 73% | best |
| September | 28°C (82°F) | 25°C (76°F) | 162 mm | 73% | fair |
| October | 28°C (82°F) | 24°C (76°F) | 292 mm | 74% | least pleasant |
| November | 28°C (83°F) | 24°C (75°F) | 305 mm | 77% | least pleasant |
| December | 28°C (83°F) | 23°C (73°F) | 175 mm | 69% | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Western Province in May
Weather can differ a lot within Western Province: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Colombo | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Dehiwala-Mount Lavinia | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Maharagama | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Moratuwa | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Negombo | 29°C (84°F) | 26°C (78°F) | 224 mm | least pleasant |
| Pita Kotte | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Sri Jayewardenepura Kotte | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Katunayaka | 29°C (84°F) | 26°C (78°F) | 224 mm | least pleasant |
| Battaramulla South | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Kolonnawa | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Kotikawatta | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |
| Hendala | 29°C (84°F) | 26°C (78°F) | 224 mm | fair |