Yancheng is warmest in June, averaging 32° by day and 19° at night. The wettest month is July with 332 mm, and the year brings about 1279 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 8° | -3° | 37 mm | 10.0 h | Cool |
| February | 10° | -1° | 53 mm | 10.8 h | Cool |
| March | 16° | 2° | 71 mm | 11.8 h | Sightseeing |
| April | 22° | 8° | 48 mm | 12.8 h | Sightseeing |
| May | 28° | 14° | 78 mm | 13.7 h | Beach weather |
| June | 32° | 19° | 159 mm | 14.2 h | Mild |
| July | 32° | 23° | 332 mm | 14.0 h | Rainy season |
| August | 32° | 24° | 158 mm | 13.2 h | Mild |
| September | 28° | 18° | 180 mm | 12.2 h | Rainy season |
| October | 22° | 12° | 87 mm | 11.1 h | Sightseeing |
| November | 17° | 6° | 51 mm | 10.2 h | Sightseeing |
| December | 9° | -1° | 25 mm | 9.8 h | Cool |
High and low are average daily maximum and minimum, rain is typical monthly total, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER — averages, not promises.
When to go
Beach weather: May — highs around 28°, nights no colder than 14°, and at most 78 mm of rain in a month.
Walking the city: March, April, October and November — highs of 16–22° and no more than 87 mm of rain a month.
Wet season: July and September — up to 332 mm in a single month.