Click on a day for an hourly weather forecast
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.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 31° / 24° | 5 | 26 | 0 | 69 mm | Good | Sri Lanka in January |
| February | 32° / 24° | 5 | 23 | 0 | 71 mm | Good | Sri Lanka in February |
| March | 32° / 26° | 9 | 22 | 0 | 135 mm | Ok | Sri Lanka in March |
| April | 32° / 27° | 13 | 17 | 0 | 246 mm | Ok | Sri Lanka in April |
| May | 30° / 27° | 18 | 13 | 0 | 637 mm | Ok | Sri Lanka in May |
| June | 29° / 26° | 21 | 9 | 0 | 736 mm | Ok | Sri Lanka in June |
| July | 29° / 26° | 20 | 11 | 0 | 595 mm | Ok | Sri Lanka in July |
| August | 29° / 26° | 20 | 11 | 0 | 608 mm | Ok | Sri Lanka in August |
| September | 29° / 26° | 15 | 15 | 0 | 475 mm | Ok | Sri Lanka in September |
| October | 30° / 26° | 15 | 16 | 0 | 383 mm | Ok | Sri Lanka in October |
| November | 30° / 25° | 14 | 16 | 0 | 300 mm | Ok | Sri Lanka in November |
| December | 30° / 25° | 9 | 22 | 0 | 159 mm | Ok | Sri Lanka in December |