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Sri Lanka weather in May 2025
Expect 31°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Sri Lanka in May. Check more long-term weather averages for Sri Lanka in May before you book your next holiday to Sri Lanka in 2025/2026.
- 31°C max day temperature
31 - 6 hours of sunshine per day
- 14 days with some rainfall
14 - 25°C min night temperature
25 - 12 hours of daylight per day
12 - Very High heat & humidity
VH - 382 mm of monthly rainfall
382 - 11+ (Extreme) UV index
11 - 29°C sea temperature
29
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The May weather guide for Sri Lanka (Colombo) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Sri Lanka destinations
Below are average maximum temperatures at popular countries, regions and places in Sri Lanka in May. Select a holiday destination to see more weather parameters.
All Sri Lanka destinations
- Ahungalla
- Anuradhapura
- Arugam Bay
- Aturuwella
- Bentota
- Beruwela
- Colombo
- Galle
- Hikkaduwa
- Jaffna
- Kalutara
- Kandalama
- Kandy
- Kurunegala
- Matara
- Mirissa Beach
- Mount Lavinia-Dehiwala
- Negombo
- Nuwara Eliya
- Polonnaruwa
- Sigiriya
- Trincomalee
- Unawatuna
- Wadduwa
- Waikkal
- Yala
Metric (°C / mm) | Imperial (°F / inches)
More about Sri Lanka
How hot is it in Sri Lanka in May?
Daytime temperatures usually reach 31°C in Colombo, Sri Lanka in May with very high heat and humidity, falling to 25°C at night.
How sunny is it in Sri Lanka in May?
There are normally 6 hours of bright sunshine each day in Colombo, Sri Lanka in May - that's 51% of daylight hours.
How warm is the sea around Sri Lanka in May?
The average sea temperature around Colombo, Sri Lanka in May is 29°C.
Does it rain in Sri Lanka in May?
There are usually 14 days with some rain in Colombo, Sri Lanka in May and the average monthly rainfall is 382mm.
Sri Lanka May sunrise & sunset times
Browse the sunrise and sunset times for Sri Lanka in May 2025. Select a month to view Sri Lanka sunrise and sunset times for the next 12 months. The Sri Lanka sunrise and sunset times shown below are for Colombo.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Thursday, 1st May 2025 | 05:57 | 18:19 |
| Friday, 16th May 2025 | 05:54 | 18:20 |
| Saturday, 31st May 2025 | 05:53 | 18:23 |
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