Click on a day for an hourly weather forecast
The weather in Taipei 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 Taipei 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 Taipei in September 2025.
If you’re planning to visit Taipei in the near future, we highly recommend that you review the 14 day weather forecast for Taipei before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 17° / 12° | 10 | 21 | 0 | 104 mm | Ok | Taipei in January |
| February | 19° / 14° | 8 | 20 | 0 | 93 mm | Ok | Taipei in February |
| March | 22° / 16° | 7 | 24 | 0 | 89 mm | Ok | Taipei in March |
| April | 25° / 19° | 6 | 24 | 0 | 78 mm | Perfect | Taipei in April |
| May | 29° / 23° | 8 | 23 | 0 | 141 mm | Ok | Taipei in May |
| June | 32° / 26° | 9 | 21 | 0 | 228 mm | Ok | Taipei in June |
| July | 34° / 27° | 7 | 24 | 0 | 194 mm | Bad | Taipei in July |
| August | 33° / 27° | 9 | 22 | 0 | 267 mm | Ok | Taipei in August |
| September | 31° / 25° | 7 | 23 | 0 | 192 mm | Ok | Taipei in September |
| October | 25° / 21° | 9 | 22 | 0 | 216 mm | Good | Taipei in October |
| November | 23° / 19° | 9 | 21 | 0 | 132 mm | Good | Taipei in November |
| December | 18° / 14° | 11 | 20 | 0 | 132 mm | Ok | Taipei in December |