Climate averages 1991–2020
Tainan weather
in December.
A warm, moderately wet month: the 10th warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Tainan: daytime highs average 22.7°C and nights cool to about 17.3°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 47 mm of rain on roughly 6 days, which makes December a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 45 min on an average December day.
The nearest other city in this atlas is Yongkang (6 km away). In December its highs average 22.8°C, about as warm as Tainan, with 47 mm of rain.
Among the 28 cities listed in Taiwan, Tainan ranks 3rd of 28 for the warmest December highs and joint 2nd of 28 for the driest December (rainfall, lowest first). The mean December high of those 28 cities is 20.5°C; Tainan is 2.2°C warmer than that mean.
From December to January, average highs fall by 1.3°C to 21.4°C, and monthly rainfall rises from 47 mm to 49 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Yongkang in DecemberTaiwan · 6 kmHigh 22.8°C · Low 16.2°C · 47 mm rain
- Xinying in DecemberTaiwan · 37 kmHigh 22.5°C · Low 15.5°C · 57 mm rain
- Kaohsiung in DecemberTaiwan · 43 kmHigh 23.2°C · Low 16.7°C · 40 mm rain
- Chiayi City in DecemberTaiwan · 60 kmHigh 21.5°C · Low 13.7°C · 60 mm rain
- Douliu in DecemberTaiwan · 87 kmHigh 21.4°C · Low 14.1°C · 61 mm rain
- Taitung in DecemberTaiwan · 100 kmHigh 21.6°C · Low 17.7°C · 267 mm rain
- Nantou, Taiwan in DecemberTaiwan · 113 kmHigh 20.5°C · Low 13.5°C · 56 mm rain
- Yuanlin in DecemberTaiwan · 114 kmHigh 22.0°C · Low 15.1°C · 50 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.