Click on a day for an hourly weather forecast
The weather in Koh Mak in September is hot. The average temperatures are between 22°C and 31°C.
There’s going to be many days of rain during the month of September in Koh Mak.
Koh Mak 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 Koh Mak in September 2025.
If you’re planning to visit Koh Mak in the near future, we highly recommend that you review the 14 day weather forecast for Koh Mak 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 Mak in January |
| February | 34° / 18° | 0 | 28 | 0 | 11 mm | Ok | Koh Mak in February |
| March | 36° / 22° | 1 | 30 | 0 | 36 mm | Ok | Koh Mak in March |
| April | 37° / 24° | 6 | 24 | 0 | 101 mm | Ok | Koh Mak in April |
| May | 34° / 24° | 14 | 17 | 0 | 313 mm | Bad | Koh Mak in May |
| June | 31° / 23° | 20 | 10 | 0 | 459 mm | Ok | Koh Mak in June |
| July | 29° / 23° | 24 | 7 | 0 | 536 mm | Ok | Koh Mak in July |
| August | 30° / 23° | 24 | 7 | 0 | 585 mm | Ok | Koh Mak in August |
| September | 31° / 22° | 18 | 12 | 0 | 380 mm | Ok | Koh Mak in September |
| October | 31° / 21° | 8 | 23 | 0 | 159 mm | Ok | Koh Mak in October |
| November | 31° / 19° | 2 | 28 | 0 | 43 mm | Good | Koh Mak in November |
| December | 29° / 16° | 1 | 30 | 0 | 23 mm | Good | Koh Mak in December |