Last updated: August 22, 2025
In December, the average temperature in Yancheng, China hovers around 5°C (42°F). You can expect a minimum drop to -9°C (16°F) and a maximum rise to 20°C (68°F). During this month, precipitation totals about 32 mm (1.3 in) spread over 6 days, with an average humidity of 73%. Prepare for a blend of chilly days and mild sunshine!
In December in Yancheng, 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 Yancheng in December, the total precipitation amount is 32 mm (1.3 in) over the course of 6 days.
In Yancheng 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 Yancheng 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 Yancheng for better planning.
UV Risk Categories
Weather in Yancheng varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Yancheng, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 41 mm (1.6 inches) | 67% | moderate |
| February Weather | 5°C (41°F) | 34 mm (1.3 inches) | 69% | high |
| March Weather | 10°C (51°F) | 48 mm (1.9 inches) | 79% | very high |
| April Weather | 15°C (59°F) | 49 mm (1.9 inches) | 86% | very high |
| May Weather | 21°C (70°F) | 114 mm (4.5 inches) | 87% | very high |
| June Weather | 25°C (76°F) | 123 mm (4.8 inches) | 90% | very high |
| July Weather | 28°C (82°F) | 251 mm (9.9 inches) | 95% | extreme |
| August Weather | 28°C (82°F) | 156 mm (6.1 inches) | 92% | extreme |
| September Weather | 24°C (75°F) | 95 mm (3.7 inches) | 79% | very high |
| October Weather | 17°C (64°F) | 54 mm (2.1 inches) | 76% | high |
| November Weather | 12°C (54°F) | 38 mm (1.5 inches) | 77% | moderate |
| December Weather | 5°C (42°F) | 32 mm (1.3 inches) | 73% | moderate |