Climate averages 1991–2020
Tainan weather
in January.
A mild, moderately wet month: the coolest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Tainan: daytime highs average 21.4°C and nights cool to about 15.5°C. By daytime temperature it is the coolest month of the year.
Expect about 49 mm of rain on roughly 7 days, which makes January a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 53 min on an average January day.
The nearest other city in this atlas is Yongkang (6 km away). In January its highs average 21.6°C, about as warm as Tainan, with 49 mm of rain.
Among the 28 cities listed in Taiwan, Tainan ranks 3rd of 28 for the warmest January highs and joint 2nd of 28 for the driest January (rainfall, lowest first). The mean January high of those 28 cities is 19.0°C; Tainan is 2.4°C warmer than that mean.
From January to February, average highs rise by 0.9°C to 22.3°C, and monthly rainfall falls from 49 mm to 44 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
Tainan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 21.4°C15.5°C | 15.5°C | 49 | 7.2 | 10.911 h |
| February | 22.3°C16.2°C | 16.2°C | 44 | 7.9 | 11.411 h |
| March | 24.6°C18.3°C | 18.3°C | 58 | 9.2 | 12.012 h |
| April | 27.0°C21.3°C | 21.3°C | 120 | 11.8 | 12.713 h |
| May | 28.7°C23.8°C | 23.8°C | 299 | 18.6 | 13.213 h |
| June | 29.7°C25.3°C | 25.3°C | 393 | 19.7 | 13.514 h |
| July | 30.3°C25.7°C | 25.7°C | 305 | 19.1 | 13.413 h |
| August | 29.7°C25.5°C | 25.5°C | 401 | 21.1 | 12.913 h |
| September | 29.4°C24.8°C | 24.8°C | 183 | 13.5 | 12.312 h |
| October | 28.0°C23.0°C | 23.0°C | 54 | 6.4 | 11.612 h |
| November | 25.9°C20.7°C | 20.7°C | 41 | 5.7 | 11.111 h |
| December | 22.7°C17.3°C | 17.3°C | 47 | 6.4 | 10.811 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
- Yongkang in JanuaryTaiwan · 6 kmHigh 21.6°C · Low 14.4°C · 49 mm rain
- Xinying in JanuaryTaiwan · 37 kmHigh 21.3°C · Low 13.7°C · 63 mm rain
- Kaohsiung in JanuaryTaiwan · 43 kmHigh 22.3°C · Low 15.1°C · 35 mm rain
- Chiayi City in JanuaryTaiwan · 60 kmHigh 20.2°C · Low 11.9°C · 53 mm rain
- Douliu in JanuaryTaiwan · 87 kmHigh 20.0°C · Low 12.4°C · 56 mm rain
- Taitung in JanuaryTaiwan · 100 kmHigh 20.8°C · Low 16.5°C · 314 mm rain
- Nantou, Taiwan in JanuaryTaiwan · 113 kmHigh 19.1°C · Low 12.0°C · 59 mm rain
- Yuanlin in JanuaryTaiwan · 114 kmHigh 20.3°C · Low 13.2°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 Tainan) is explained once on the Tainan year overview and on the Sources, method and limits page.
Yongkang lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.