Polonnaruwa Weather in May
Polonnaruwa in May sees extremely high daytime temperatures of 36°C (97°F) and nighttime lows of 26°C (79°F). Rainfall is fairly high this month at around 70 mm (2.8 in), so pack a rain jacket to stay dry.
Rainfall in Polonnaruwa in May
Expect around 8 days of rain based on historical data, with 70 mm (2.8 in) average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Polonnaruwa in May
If you're visiting Polonnaruwa in May, expect highs of 36°C (97°F) and overnight lows around 26°C (79°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights remain warm at around 26°C (79°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.Keep in mind that while these are the average temperatures, there can be days that are even hotter. It's essential to be prepared for such heat. Wearing light, breathable fabrics and protecting yourself from the sun's intensity with hats or shades can make a difference. Hydration is key, so remember to drink plenty of water. Especially if you find yourself outdoors for a longer period.
May in Polonnaruwa 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 Polonnaruwa's climate page.
Polonnaruwa Temperature in May
Min Temperature
26°C (79°F)
Max Temperature
36°C (97°F)
Chance of Rain
26%
Precipitation
70 mm (2.8 in)
Rainy days
8 days
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Polonnaruwa typically stay consistent throughout May, with daily highs averaging around 36°C (97°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in May
Daily Historical Precipitation
43-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 Polonnaruwa in May
Browse day-by-day weather records for Polonnaruwa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Polonnaruwa historical weather extremes in May
The extremes listed below come from historical weather data collected in Polonnaruwa from 2005 through 2026.
- The hottest May day on record in Polonnaruwa reached 39°C (102°F) (May 7, 2024).
- Polonnaruwa experienced its chilliest May day on May 4, 2005, reaching only 26°C (79°F).
- Nighttime temperatures dropped to 22°C (72°F) on May 17, 2025, marking the coldest May night on record.
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
pleasant
tolerable
unpleasant
poor
What to Wear in Polonnaruwa in May
Hot weather in May means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Polonnaruwa 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 Polonnaruwa's climate page.
See the full Polonnaruwa climate overview or explore weather in Sri Lanka.
