The temperatures in Sri Lanka during May are extremely high, between 27°C and hot as 30°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of May in Sri Lanka.
Sri Lanka should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Sri Lanka in May 2025.
If you’re planning to visit Sri Lanka in the near future, we highly recommend that you review the 14 day weather forecast for Sri Lanka before you arrive.
Temperatures
30° / 27°
Rainy Days
18
Snowy Days
0
Dry Days
13
Rainfall
637
mm
Sun Hours
10.2
Hrs
