Weather in Colombo in May
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for May in Colombo.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youIn May, Colombo sees average highs of 29.6°C (85.3°F) and lows of 25.4°C. Conditions are hot and extremely wet, with heavy downpours most days, with roughly 8.4 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Colombo — every month compared. Once you know when to go, find your Colombo packing list at 247PackingList.
Get ready for Colombo in May
Search flights to Colombo
Compare 100+ airlines for May — one search, best price.
Search Flights →Lightweight travel clothing
Lightweight, breathable clothing and a compact travel umbrella are essential in this climate.
Check Price →What to pack for Colombo in May
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Compare all months in Colombo
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 30.0°C | 115.3mm | 9/10 |
| February | 31.0°C | 41.2mm | 10/10 |
| March | 30.8°C | 111.6mm | 9/10 |
| April | 30.6°C | 150.7mm | 9/10 |
| May | 29.6°C | 385.3mm | 8/10 |
| June | 28.9°C | 294.4mm | 8/10 |
| July | 28.6°C | 234.1mm | 8/10 |
| August | 28.5°C | 237.3mm | 8/10 |
| September | 28.3°C | 348.7mm | 8/10 |
| October | 28.4°C | 353.7mm | 8/10 |
| November | 28.7°C | 424.8mm | 8/10 |
| December | 29.3°C | 215.0mm | 8/10 |
Full month-by-month guide: best time to visit Colombo →
For facts about Sri Lanka — currency, language and dialling code — see our Sri Lanka country guide at 247CountryInfo. Travellers also find it useful to keep a Colombo travel guide to hand. Check clothing sizes in Sri Lanka before you shop.
Frequently Asked Questions
Is May a good time to visit Colombo?
May rates 8/10 for visiting Colombo — good time to visit. Expect average highs of 29.6°C, 385.3mm of rain across the month and about 8.4 hours of daily sunshine.
What is the temperature in Colombo in May?
In May, Colombo has average highs of 29.6°C (85.3°F) and average lows of 25.4°C (77.7°F).
Does it rain in Colombo in May?
Yes — May is one of the wetter months in Colombo, averaging 385.3mm of rain over roughly 30 rainy days. Pack for heavy showers.
What should I wear in Colombo in May?
For Colombo in May (29.6°C highs / 25.4°C lows), pack light layers plus sunscreen, t-shirts and light trousers or shorts, compact travel umbrella.
More essentials for Colombo in May
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.