Click on a day for an hourly weather forecast
The weather in Koh Tao in May is very hot. The average temperatures are between 24°C and 34°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of May in Koh Tao. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Koh Tao in May 2025.
If you’re planning to visit Koh Tao in the near future, we highly recommend that you review the 14 day weather forecast for Koh Tao before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 30° / 16° | 1 | 30 | 0 | 26 mm | Good | Koh Tao in January |
| February | 34° / 18° | 0 | 28 | 0 | 11 mm | Ok | Koh Tao in February |
| March | 36° / 22° | 1 | 30 | 0 | 36 mm | Ok | Koh Tao in March |
| April | 37° / 24° | 6 | 24 | 0 | 101 mm | Ok | Koh Tao in April |
| May | 34° / 24° | 14 | 17 | 0 | 313 mm | Bad | Koh Tao in May |
| June | 31° / 23° | 20 | 10 | 0 | 459 mm | Ok | Koh Tao in June |
| July | 29° / 23° | 24 | 7 | 0 | 536 mm | Ok | Koh Tao in July |
| August | 30° / 23° | 24 | 7 | 0 | 585 mm | Ok | Koh Tao in August |
| September | 31° / 22° | 18 | 12 | 0 | 380 mm | Ok | Koh Tao in September |
| October | 31° / 21° | 8 | 23 | 0 | 159 mm | Ok | Koh Tao in October |
| November | 31° / 19° | 2 | 28 | 0 | 43 mm | Good | Koh Tao in November |
| December | 29° / 16° | 1 | 30 | 0 | 23 mm | Good | Koh Tao in December |