Click on a day for an hourly weather forecast
The weather in Taiwan in September is very hot. The average temperatures are between 25°C and 31°C, drinking water regularly is advisable.
You can expect about 3 to 8 days of rain in Taiwan during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Taiwan in September 2025.
If you’re planning to visit Taiwan in the near future, we highly recommend that you review the 14 day weather forecast for Taiwan before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 17° / 12° | 10 | 21 | 0 | 104 mm | Ok | Taiwan in January |
| February | 19° / 14° | 8 | 20 | 0 | 93 mm | Ok | Taiwan in February |
| March | 22° / 16° | 7 | 24 | 0 | 89 mm | Ok | Taiwan in March |
| April | 25° / 19° | 6 | 24 | 0 | 78 mm | Perfect | Taiwan in April |
| May | 29° / 23° | 8 | 23 | 0 | 141 mm | Ok | Taiwan in May |
| June | 32° / 26° | 9 | 21 | 0 | 228 mm | Ok | Taiwan in June |
| July | 34° / 27° | 7 | 24 | 0 | 194 mm | Bad | Taiwan in July |
| August | 33° / 27° | 9 | 22 | 0 | 267 mm | Ok | Taiwan in August |
| September | 31° / 25° | 7 | 23 | 0 | 192 mm | Ok | Taiwan in September |
| October | 25° / 21° | 9 | 22 | 0 | 216 mm | Good | Taiwan in October |
| November | 23° / 19° | 9 | 21 | 0 | 132 mm | Good | Taiwan in November |
| December | 18° / 14° | 11 | 20 | 0 | 132 mm | Ok | Taiwan in December |