Tainan weather in December
In December, Tainan has an average high of 23 °C73 °F and an average low of 19 °C67 °F, with about 34 mm1.3 in of precipitation. It is the 10th warmest month of the year and ranks 11th for precipitation.
How December compares with other months
Compared with November, December is 3 °C5.5 °F cooler on average and drier by 15 mm0.6 in. Compared with January, December is 1.5 °C2.8 °F warmer on average and drier by 6 mm0.2 in. Daylight lasts about 10.7 hours around the middle of the month. Average relative humidity is 76% and the average cloud amount 58%.
Is December a good time to visit Tainan?
Yes — December is one of the most comfortable months to visit Tainan by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in December
For Tainan in December, pack light layers — T-shirts plus a light sweater or jacket.
December in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Tainan | 2373 | 1967 | 341.3 |
| Yongkang | 2373 | 1967 | 341.3 |
| Kaohsiung | 2678 | 2068 | 341.4 |
| Chiayi City | 2679 | 1661 | 371.4 |
| Taitung | 2475 | 2068 | 421.7 |
| Yuanlin | 2476 | 1660 | 421.6 |
| Taichung | 2475 | 1560 | 421.6 |
| Toufen | 2271 | 1763 | 622.5 |
| Hsinchu | 2067 | 1559 | 963.8 |
Nearby places that are more than 1 °C1.8 °F warmer in December: Kaohsiung; cooler: Taichung, Toufen and Hsinchu.
Other months in Tainan
- January21 °C70 °F / 18 °C64 °F
- February22 °C72 °F / 18 °C65 °F
- March24 °C75 °F / 20 °C68 °F
- April26 °C79 °F / 23 °C73 °F
- May28 °C83 °F / 25 °C78 °F
- June29 °C84 °F / 27 °C81 °F
- July30 °C86 °F / 28 °C82 °F
- August29 °C85 °F / 28 °C82 °F
- September29 °C84 °F / 27 °C80 °F
- October27 °C81 °F / 25 °C76 °F
- November26 °C78 °F / 23 °C73 °F
- December23 °C73 °F / 19 °C67 °F
Frequently asked questions
How warm is Tainan in December?
In December the average high in Tainan is 23 °C (73 °F) and the average low is 19 °C (67 °F).
Does it rain a lot in Tainan in December?
On average about 34 mm (1.3 in) of precipitation falls in December; it ranks 11th of the 12 months.
Is December the warmest month in Tainan?
No. The warmest month in Tainan is July, with an average high of 30 °C (86 °F). The coldest month is January, with an average low of 18 °C (64 °F).
How long is the day in Tainan in December?
In the middle of December the day in Tainan lasts about 10.7 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Tainan in December?
The average relative humidity in December is about 76%. This is a long-term average for the whole day.
How cloudy is Tainan in December?
On average about 58% of the sky is covered by cloud in December. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.