Click on a day for an hourly weather forecast
The weather in Hoi An in September is very hot. The average temperatures are between 24°C and 30°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Hoi An.
Hoi An 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 Hoi An in September 2025.
If you’re planning to visit Hoi An in the near future, we highly recommend that you review the 14 day weather forecast for Hoi An before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 23° / 19° | 13 | 18 | 0 | 268 mm | Good | Hoi An in January |
| February | 25° / 20° | 6 | 22 | 0 | 117 mm | Perfect | Hoi An in February |
| March | 27° / 21° | 9 | 22 | 0 | 149 mm | Good | Hoi An in March |
| April | 29° / 23° | 12 | 18 | 0 | 183 mm | Ok | Hoi An in April |
| May | 32° / 25° | 15 | 16 | 0 | 196 mm | Ok | Hoi An in May |
| June | 32° / 25° | 16 | 14 | 0 | 183 mm | Ok | Hoi An in June |
| July | 32° / 25° | 15 | 16 | 0 | 217 mm | Ok | Hoi An in July |
| August | 32° / 25° | 15 | 16 | 0 | 270 mm | Ok | Hoi An in August |
| September | 30° / 24° | 15 | 15 | 0 | 466 mm | Ok | Hoi An in September |
| October | 28° / 23° | 14 | 17 | 0 | 607 mm | Good | Hoi An in October |
| November | 26° / 22° | 16 | 14 | 0 | 726 mm | Good | Hoi An in November |
| December | 23° / 20° | 15 | 16 | 0 | 447 mm | Good | Hoi An in December |