Climate averages 1991–2020
Taichung weather
in September.
A hot, very wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Taichung: daytime highs average 28.3°C and nights cool to about 22.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 255 mm of rain on roughly 23 days, which makes September a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average September day.
The nearest other city in this atlas is Chang-hua (15 km away). In September its highs average 29.1°C, 0.8°C warmer than Taichung, with 144 mm of rain.
Among the 28 cities listed in Taiwan, Taichung ranks joint 16th of 28 for the warmest September highs and 18th of 28 for the driest September (rainfall, lowest first). The mean September high of those 28 cities is 28.5°C; Taichung is 0.1°C cooler than that mean.
From September to October, average highs fall by 1.4°C to 27.0°C, and monthly rainfall falls from 255 mm to 93 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Taichung climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.8°C12.7°C | 12.7°C | 68 | 9.0 | 10.811 h |
| February | 20.6°C13.5°C | 13.5°C | 99 | 11.0 | 11.311 h |
| March | 22.8°C15.6°C | 15.6°C | 129 | 12.9 | 12.012 h |
| April | 25.4°C18.6°C | 18.6°C | 150 | 14.7 | 12.713 h |
| May | 27.5°C21.2°C | 21.2°C | 222 | 18.7 | 13.313 h |
| June | 28.7°C22.5°C | 22.5°C | 288 | 22.1 | 13.614 h |
| July | 29.4°C23.3°C | 23.3°C | 344 | 24.7 | 13.513 h |
| August | 28.8°C23.3°C | 23.3°C | 439 | 27.6 | 13.013 h |
| September, selected | 28.3°C22.6°C | 22.6°C | 255 | 22.5 | 12.312 h |
| October | 27.0°C20.6°C | 20.6°C | 93 | 11.1 | 11.612 h |
| November | 24.9°C18.0°C | 18.0°C | 50 | 6.5 | 11.011 h |
| December | 21.4°C14.5°C | 14.5°C | 56 | 7.5 | 10.711 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Chang-hua in SeptemberTaiwan · 15 kmHigh 29.1°C · Low 23.6°C · 144 mm rain
- Caotun in SeptemberTaiwan · 19 kmHigh 28.2°C · Low 22.2°C · 230 mm rain
- Yuanlin in SeptemberTaiwan · 24 kmHigh 29.1°C · Low 23.2°C · 144 mm rain
- Nantou, Taiwan in SeptemberTaiwan · 26 kmHigh 27.1°C · Low 21.2°C · 230 mm rain
- Puli in SeptemberTaiwan · 35 kmHigh 28.1°C · Low 21.5°C · 298 mm rain
- Miaoli in SeptemberTaiwan · 49 kmHigh 27.7°C · Low 23.9°C · 182 mm rain
- Douliu in SeptemberTaiwan · 51 kmHigh 28.5°C · Low 22.3°C · 267 mm rain
- Toufen in SeptemberTaiwan · 64 kmHigh 28.0°C · Low 24.1°C · 197 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Taichung) is explained once on the Taichung year overview and on the Sources, method and limits page.