Home › Cities › Taiwan › Chiayi City
Chiayi City, Taiwan climate
Aw Tropical savanna (dry winter)
Chiayi City has a mildly seasonal tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is July with an average daily high near 32°C, while the coldest is January averaging around 15°C at night. Precipitation totals about 1437 mm a year and is strongly seasonal — August alone averages 356 mm while December barely receives 14 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Chiayi City climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 23 | 26 | 28 | 30 | 32 | 32 | 32 | 31 | 30 | 27 | 24 |
| Avg temp (°C) | 18 | 19 | 22 | 25 | 28 | 29 | 30 | 29 | 29 | 27 | 24 | 20 |
| Avg low (°C) | 15 | 16 | 19 | 22 | 25 | 27 | 27 | 27 | 26 | 24 | 21 | 17 |
| Precipitation (mm) | 18 | 16 | 23 | 56 | 144 | 333 | 269 | 356 | 159 | 27 | 21 | 14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 23 | 26 | 28 | 30 | 32 |
| Avg temp (°C) | 18 | 19 | 22 | 25 | 28 | 29 |
| Avg low (°C) | 15 | 16 | 19 | 22 | 25 | 27 |
| Precipitation (mm) | 18 | 16 | 23 | 56 | 144 | 333 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 31 | 30 | 27 | 24 |
| Avg temp (°C) | 30 | 29 | 29 | 27 | 24 | 20 |
| Avg low (°C) | 27 | 27 | 26 | 24 | 21 | 17 |
| Precipitation (mm) | 269 | 356 | 159 | 27 | 21 | 14 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 61 | 64 | 68 | 70 | 71 | 66 | 68 | 59 | 47 | 50 | 51 |
| Relative humidity (%) | 77 | 78 | 78 | 79 | 82 | 85 | 84 | 85 | 83 | 80 | 79 | 77 |
| Wind speed (m/s) | 4.9 | 4.5 | 3.9 | 3.4 | 3.0 | 3.7 | 3.6 | 3.6 | 3.4 | 3.9 | 4.0 | 4.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 61 | 64 | 68 | 70 | 71 |
| Relative humidity (%) | 77 | 78 | 78 | 79 | 82 | 85 |
| Wind speed (m/s) | 4.9 | 4.5 | 3.9 | 3.4 | 3.0 | 3.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 68 | 59 | 47 | 50 | 51 |
| Relative humidity (%) | 84 | 85 | 83 | 80 | 79 | 77 |
| Wind speed (m/s) | 3.6 | 3.6 | 3.4 | 3.9 | 4.0 | 4.8 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Tainan, a weather station, about 58 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.