Kalutara Weather in May
Kalutara in May sees very high daytime temperatures of 31°C (88°F) and nighttime lows of 26°C (79°F). As part of the rainy season, showers are frequent and often heavy. Budget around 333 mm (13 in) of rainfall for the month.
Rainfall in Kalutara in May
As part of the rainy season, Kalutara sees around 13 days of rain in May, with an average of 333 mm (13 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 Kalutara in May
If you're visiting Kalutara in May, expect highs of 31°C (88°F) and overnight lows around 26°C (79°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With lows of 26°C (79°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.
Sunshine in Kalutara in May
With approximately 202 hours of sunshine, the days are filled with clear skies during the day. Rain typically falls in the afternoon or evening, keeping mornings and early parts of the day sunny.May in Kalutara can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
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 Kalutara's climate page.
Kalutara Temperature in May
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Chance of Rain
45%
Precipitation
333 mm (13 in)
Rainy days
13 days
Humidity
77% *
Sunshine
202 hours *
Percentage Sunshine
*
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in Kalutara 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 Kalutara in May
Browse day-by-day weather records for Kalutara spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kalutara historical weather extremes in May
Our historical data for Kalutara spans 1995 to 2026, revealing these weather extremes.
- The hottest May day on record in Kalutara reached 36°C (97°F) (May 29, 1998).
- The coldest May day was on May 7, 1997, with a maximum of 25°C (77°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 →
perfect weather
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tolerable
unpleasant
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What to Wear in Kalutara in May
Warm but pleasant conditions in Kalutara in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Kalutara 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 Kalutara's climate page.
Temperature Rainfall Sunshine Humidity
See the full Kalutara climate overview or explore weather in Sri Lanka.
