Click on a day for an hourly weather forecast
The temperatures in Koh Lanta during August are extremely high, between 28°C and hot as 29°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of August in Koh Lanta.
Koh Lanta 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 Lanta in August 2025.
If you’re planning to visit Koh Lanta in the near future, we highly recommend that you review the 14 day weather forecast for Koh Lanta before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 29° / 26° | 6 | 25 | 0 | 146 mm | Good | Koh Lanta in January |
| February | 30° / 26° | 3 | 25 | 0 | 70 mm | Good | Koh Lanta in February |
| March | 30° / 27° | 8 | 24 | 0 | 174 mm | Ok | Koh Lanta in March |
| April | 30° / 27° | 12 | 18 | 0 | 264 mm | Ok | Koh Lanta in April |
| May | 30° / 28° | 16 | 15 | 0 | 327 mm | Ok | Koh Lanta in May |
| June | 30° / 28° | 15 | 15 | 0 | 416 mm | Ok | Koh Lanta in June |
| July | 29° / 28° | 17 | 14 | 0 | 454 mm | Ok | Koh Lanta in July |
| August | 29° / 28° | 16 | 15 | 0 | 448 mm | Ok | Koh Lanta in August |
| September | 29° / 27° | 17 | 13 | 0 | 495 mm | Ok | Koh Lanta in September |
| October | 29° / 27° | 15 | 16 | 0 | 400 mm | Ok | Koh Lanta in October |
| November | 29° / 27° | 14 | 16 | 0 | 364 mm | Ok | Koh Lanta in November |
| December | 29° / 26° | 11 | 20 | 0 | 230 mm | Ok | Koh Lanta in December |