Click on a day for an hourly weather forecast
The weather in Hainan in August is very hot. The average temperatures are between 24°C and 32°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of August in Hainan.
Hainan 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 Hainan in August 2025.
If you’re planning to visit Hainan in the near future, we highly recommend that you review the 14 day weather forecast for Hainan before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 22° / 15° | 5 | 26 | 0 | 48 mm | Good | Hainan in January |
| February | 26° / 17° | 3 | 26 | 0 | 33 mm | Perfect | Hainan in February |
| March | 30° / 20° | 6 | 25 | 0 | 77 mm | Good | Hainan in March |
| April | 32° / 22° | 12 | 18 | 0 | 178 mm | Ok | Hainan in April |
| May | 33° / 24° | 17 | 14 | 0 | 266 mm | Ok | Hainan in May |
| June | 34° / 25° | 16 | 14 | 0 | 214 mm | Bad | Hainan in June |
| July | 33° / 24° | 16 | 15 | 0 | 237 mm | Ok | Hainan in July |
| August | 32° / 24° | 17 | 14 | 0 | 334 mm | Ok | Hainan in August |
| September | 31° / 24° | 14 | 16 | 0 | 248 mm | Ok | Hainan in September |
| October | 28° / 21° | 10 | 21 | 0 | 225 mm | Good | Hainan in October |
| November | 26° / 19° | 6 | 24 | 0 | 98 mm | Perfect | Hainan in November |
| December | 23° / 16° | 4 | 27 | 0 | 54 mm | Perfect | Hainan in December |