Nanchang is warmest in August, averaging 33° by day and 25° at night. The wettest month is June with 402 mm, and the year brings about 1954 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 12° | 1° | 99 mm | 10.4 h | Mild |
| February | 14° | 3° | 146 mm | 11.0 h | Mild |
| March | 20° | 8° | 208 mm | 11.8 h | Rainy season |
| April | 24° | 14° | 285 mm | 12.7 h | Rainy season |
| May | 28° | 19° | 236 mm | 13.4 h | Rainy season |
| June | 30° | 23° | 402 mm | 13.8 h | Rainy season |
| July | 32° | 25° | 239 mm | 13.7 h | Rainy season |
| August | 33° | 25° | 115 mm | 13.0 h | Mild |
| September | 31° | 21° | 72 mm | 12.2 h | Beach weather |
| October | 26° | 15° | 40 mm | 11.3 h | Beach weather |
| November | 21° | 9° | 87 mm | 10.5 h | Sightseeing |
| December | 13° | 3° | 25 mm | 10.2 h | Mild |
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: September and October — highs around 28°, nights no colder than 15°, and at most 72 mm of rain in a month.
Walking the city: November — highs of 21–21° and no more than 87 mm of rain a month.
Wet season: March, April, May, June and July — up to 402 mm in a single month.