Click on a day for an hourly weather forecast
The weather in Surat Thani in September is very hot. The average temperatures are between 24°C and 31°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Surat Thani.
Surat Thani 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 Surat Thani in September 2025.
If you’re planning to visit Surat Thani in the near future, we highly recommend that you review the 14 day weather forecast for Surat Thani before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 30° / 22° | 6 | 25 | 0 | 156 mm | Good | Surat Thani in January |
| February | 32° / 22° | 1 | 27 | 0 | 31 mm | Good | Surat Thani in February |
| March | 33° / 24° | 6 | 25 | 0 | 127 mm | Good | Surat Thani in March |
| April | 33° / 25° | 12 | 18 | 0 | 194 mm | Ok | Surat Thani in April |
| May | 33° / 25° | 18 | 13 | 0 | 303 mm | Ok | Surat Thani in May |
| June | 32° / 25° | 14 | 16 | 0 | 200 mm | Ok | Surat Thani in June |
| July | 31° / 24° | 13 | 18 | 0 | 188 mm | Ok | Surat Thani in July |
| August | 32° / 24° | 13 | 18 | 0 | 193 mm | Ok | Surat Thani in August |
| September | 31° / 24° | 16 | 14 | 0 | 228 mm | Ok | Surat Thani in September |
| October | 31° / 24° | 16 | 15 | 0 | 282 mm | Ok | Surat Thani in October |
| November | 30° / 24° | 12 | 18 | 0 | 300 mm | Ok | Surat Thani in November |
| December | 29° / 23° | 7 | 24 | 0 | 179 mm | Ok | Surat Thani in December |