Click on a day for an hourly weather forecast
The temperatures in Koh Phi Phi during September are extremely high, between 27°C and hot as 29°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Koh Phi Phi.
Koh Phi Phi 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 Phi Phi in September 2025.
If you’re planning to visit Koh Phi Phi in the near future, we highly recommend that you review the 14 day weather forecast for Koh Phi Phi before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 29° / 25° | 7 | 24 | 0 | 179 mm | Ok | Koh Phi Phi in January |
| February | 29° / 26° | 3 | 26 | 0 | 76 mm | Good | Koh Phi Phi in February |
| March | 30° / 27° | 8 | 23 | 0 | 208 mm | Ok | Koh Phi Phi in March |
| April | 30° / 27° | 13 | 17 | 0 | 296 mm | Ok | Koh Phi Phi in April |
| May | 30° / 28° | 17 | 14 | 0 | 389 mm | Ok | Koh Phi Phi in May |
| June | 30° / 28° | 16 | 14 | 0 | 463 mm | Ok | Koh Phi Phi in June |
| July | 29° / 28° | 17 | 14 | 0 | 493 mm | Ok | Koh Phi Phi in July |
| August | 29° / 27° | 17 | 14 | 0 | 482 mm | Ok | Koh Phi Phi in August |
| September | 29° / 27° | 18 | 12 | 0 | 533 mm | Ok | Koh Phi Phi in September |
| October | 29° / 27° | 19 | 12 | 0 | 499 mm | Ok | Koh Phi Phi in October |
| November | 29° / 27° | 16 | 14 | 0 | 404 mm | Ok | Koh Phi Phi in November |
| December | 29° / 26° | 12 | 19 | 0 | 256 mm | Ok | Koh Phi Phi in December |