Climate averages 1991–2020
Chiayi City weather
in August.
A hot, very wet month: the joint 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Chiayi City: daytime highs average 29.0°C and nights cool to about 23.3°C. By daytime temperature it is the joint 2nd warmest of the 12 months.
Expect about 667 mm of rain on roughly 28 days, which makes August a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 57 min on an average August day.
The nearest other city in this atlas is Xinying (24 km away). In August its highs average 29.8°C, 0.8°C warmer than Chiayi City, with 407 mm of rain.
Among the 28 cities listed in Taiwan, Chiayi City ranks joint 21st of 28 for the warmest August highs and 28th of 28 for the driest August (rainfall, lowest first). The mean August high of those 28 cities is 29.6°C; Chiayi City is 0.6°C cooler than that mean.
From August to September, average highs fall by 0.5°C to 28.5°C, and monthly rainfall falls from 667 mm to 436 mm.
The annual picture
August 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
Chiayi City climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.2°C11.9°C | 11.9°C | 53 | 10.1 | 10.911 h |
| February | 21.3°C12.9°C | 12.9°C | 62 | 11.6 | 11.411 h |
| March | 23.7°C15.3°C | 15.3°C | 85 | 13.3 | 12.012 h |
| April | 26.1°C18.4°C | 18.4°C | 144 | 16.0 | 12.713 h |
| May | 28.0°C21.1°C | 21.1°C | 270 | 22.1 | 13.313 h |
| June | 29.0°C22.8°C | 22.8°C | 365 | 24.2 | 13.614 h |
| July | 29.5°C23.4°C | 23.4°C | 555 | 26.7 | 13.413 h |
| August, selected | 29.0°C23.3°C | 23.3°C | 667 | 28.4 | 12.913 h |
| September | 28.5°C22.3°C | 22.3°C | 436 | 23.9 | 12.312 h |
| October | 27.0°C20.2°C | 20.2°C | 207 | 18.6 | 11.612 h |
| November | 25.0°C17.4°C | 17.4°C | 81 | 12.0 | 11.011 h |
| December | 21.5°C13.7°C | 13.7°C | 60 | 10.7 | 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
August in nearby cities
- Xinying in AugustTaiwan · 24 kmHigh 29.8°C · Low 24.5°C · 407 mm rain
- Douliu in AugustTaiwan · 27 kmHigh 29.0°C · Low 23.2°C · 441 mm rain
- Nantou, Taiwan in AugustTaiwan · 53 kmHigh 27.5°C · Low 21.8°C · 384 mm rain
- Yongkang in AugustTaiwan · 54 kmHigh 29.7°C · Low 24.7°C · 401 mm rain
- Yuanlin in AugustTaiwan · 55 kmHigh 29.5°C · Low 23.9°C · 287 mm rain
- Tainan in AugustTaiwan · 60 kmHigh 29.7°C · Low 25.5°C · 401 mm rain
- Caotun in AugustTaiwan · 60 kmHigh 28.5°C · Low 22.8°C · 384 mm rain
- Chang-hua in AugustTaiwan · 67 kmHigh 29.6°C · Low 24.4°C · 287 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 Chiayi City) is explained once on the Chiayi City year overview and on the Sources, method and limits page.