Climate averages 1991–2020
Chiayi City weather
in January.
A mild, moderately wet month: the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Chiayi City: daytime highs average 20.2°C and nights cool to about 11.9°C. By daytime temperature it is the coolest month of the year.
Expect about 53 mm of rain on roughly 10 days, which makes January a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 52 min on an average January day.
The nearest other city in this atlas is Xinying (24 km away). In January its highs average 21.3°C, 1.0°C warmer than Chiayi City, with 63 mm of rain.
Among the 28 cities listed in Taiwan, Chiayi City ranks 8th of 28 for the warmest January highs and 6th of 28 for the driest January (rainfall, lowest first). The mean January high of those 28 cities is 19.0°C; Chiayi City is 1.2°C warmer than that mean.
From January to February, average highs rise by 1.0°C to 21.3°C, and monthly rainfall rises from 53 mm to 62 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Xinying in JanuaryTaiwan · 24 kmHigh 21.3°C · Low 13.7°C · 63 mm rain
- Douliu in JanuaryTaiwan · 27 kmHigh 20.0°C · Low 12.4°C · 56 mm rain
- Nantou, Taiwan in JanuaryTaiwan · 53 kmHigh 19.1°C · Low 12.0°C · 59 mm rain
- Yongkang in JanuaryTaiwan · 54 kmHigh 21.6°C · Low 14.4°C · 49 mm rain
- Yuanlin in JanuaryTaiwan · 55 kmHigh 20.3°C · Low 13.2°C · 52 mm rain
- Tainan in JanuaryTaiwan · 60 kmHigh 21.4°C · Low 15.5°C · 49 mm rain
- Caotun in JanuaryTaiwan · 60 kmHigh 19.9°C · Low 12.3°C · 59 mm rain
- Chang-hua in JanuaryTaiwan · 67 kmHigh 20.0°C · Low 13.6°C · 52 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.