Taiwan in September: where is it warmest?
In September, Kinmen County is the warmest place with 30 °C by day, Kaohsiung the coolest with 29 °C. 1 of 4 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Kinmen County | 80 | 30° | 28° | 6 h | 11 |
| Tainan | 54 | 30° | 29° | 6 h | 13 |
| Taipei | 55 | 29° | – | 5 h | 14 |
| Kaohsiung | 50 | 29° | 29° | 6 h | 16 |
Taiwan in September: quick answers
Taiwan in September: where is it warmest?
The warmest places in September are Kinmen County (30 °C), Tainan (30 °C) and Taipei (29 °C).
Taiwan in September: where is the sea warmest?
The sea is warmest at Tainan (29 °C), Kaohsiung (29 °C) and Kinmen County (28 °C).
Taiwan in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Kinmen County, Taipei and Tainan.
Taiwan month by month
Taiwan: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences