Last updated: August 23, 2025
In Tainan, China, the average temperature in December hovers around 5°C (42°F). Expect a chilly range where the minimum can drop to -9°C (16°F) and the maximum may reach up to 20°C (68°F). Throughout the month, anticipate 38 mm (1.5 in) of precipitation spread across about 7 days, while the average humidity lingers at a noteworthy 73%.
In December in Tainan, the average temperature is 5°C (42°F), with maximums reaching 20°C (68°F) and minimums dipping as low as -9°C (16°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and mild-weather clothing.
In Tainan in December, the precipitation amount is 38 mm (1.5 in) over the course of 7 days.
In Tainan in December, humidity is 73%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making travel feel less invigorating and more like a struggle against the cold, damp air.
In Tainan in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Tainan for better planning.
UV Risk Categories
Weather in Tainan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tainan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 42 mm (1.7 inches) | 67% | moderate |
| February Weather | 5°C (42°F) | 39 mm (1.5 inches) | 69% | high |
| March Weather | 11°C (51°F) | 48 mm (1.9 inches) | 79% | very high |
| April Weather | 15°C (60°F) | 54 mm (2.1 inches) | 86% | very high |
| May Weather | 21°C (70°F) | 123 mm (4.8 inches) | 87% | very high |
| June Weather | 25°C (77°F) | 140 mm (5.5 inches) | 90% | very high |
| July Weather | 28°C (82°F) | 254 mm (10.0 inches) | 95% | extreme |
| August Weather | 28°C (83°F) | 157 mm (6.2 inches) | 92% | extreme |
| September Weather | 24°C (75°F) | 104 mm (4.1 inches) | 79% | very high |
| October Weather | 18°C (64°F) | 57 mm (2.2 inches) | 76% | high |
| November Weather | 12°C (54°F) | 41 mm (1.6 inches) | 77% | moderate |
| December Weather | 5°C (42°F) | 38 mm (1.5 inches) | 73% | moderate |