Negombo Weather in May
Negombo in May averages 31°C (88°F) during the day and 27°C (81°F) at night. May is part of the rainy season, so frequent rainfall is typical.
Rainfall in Negombo in May
Negombo is in the rainy season in May, with rain on around 12 days and an average of 266 mm (10 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.
Temperature in Negombo in May
In May, expect very high temperatures in Negombo, with highs of 31°C (88°F) and lows of 27°C (81°F) at night. It's usually most comfortable outside during the morning and later in the day. Nights are warm at 27°C (81°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.
Sunshine in Negombo in May
Expect a lot of sunshine this month, with about 202 hours of sun. Showers typically arrive in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, there's plenty of sunshine for sightseeing.If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit Negombo. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Negombo's climate page.
Negombo Temperature in May
Min Temperature
27°C (81°F)
Max Temperature
31°C (88°F)
Chance of Rain
40%
Precipitation
266 mm (10 in)
Rainy days
12 days
Humidity
77% *
Sunshine
202 hours *
Percentage Sunshine
*
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in Negombo typically stay consistent throughout May, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in May
Daily Historical Precipitation
44-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Negombo in May
Browse day-by-day weather records for Negombo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Negombo historical weather extremes in May
Based on 30 years of weather observations in Negombo between 1995 and 2025, these are the recorded extremes.
- On May 30, 1996, temperatures climbed to 37°C (99°F), marking the warmest May day on record.
- On May 7, 1997, Negombo saw its coldest May day with temperatures maxing out at 25°C (77°F).
- Negombo registered its coldest May night on May 13, 2003, with temperatures dropping to 20°C (68°F).
Best Places in Sri Lanka in May
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month. See all of Sri Lanka in May →
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What to Wear in Negombo in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Negombo in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Negombo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Negombo climate overview or explore weather in Sri Lanka.
