Colombo Weather in May
Sri Lanka · 30-year monthly averages
⚠️ Challenging time to visit
May in Colombo is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 26°C (79°F). Expect roughly 314mm of precipitation spread over about 17 rainy days, and heavy rainfall is common — this is peak wet season territory.
Avg high
32°C
89°F
Avg low
26°C
79°F
Rainfall
314mm
very wet
Rainy days
17
days with ≥1mm
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
- compact umbrella or rain jacket
May vs the rest of the year
FAQ
- How hot is Colombo in May?
- May in Colombo is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 26°C (79°F). Expect roughly 314mm of precipitation spread over about 17 rainy days, and heavy rainfall is common — this is peak wet season territory.
- Does it rain a lot in Colombo in May?
- Colombo sees around 314mm of precipitation in May on average — very wet by global standards.
- Is May a good time to visit Colombo?
- May is a challenging month to visit Colombo weather-wise — plan around the conditions.