Jiujiang is warmest in August, averaging 32° by day and 25° at night. The wettest month is June with 366 mm, and the year brings about 1966 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 11° | 1° | 96 mm | 10.3 h | Cool |
| February | 13° | 3° | 140 mm | 10.9 h | Mild |
| March | 19° | 8° | 198 mm | 11.8 h | Rainy season |
| April | 23° | 14° | 228 mm | 12.7 h | Rainy season |
| May | 27° | 19° | 233 mm | 13.5 h | Rainy season |
| June | 30° | 23° | 366 mm | 13.9 h | Rainy season |
| July | 32° | 26° | 322 mm | 13.7 h | Rainy season |
| August | 32° | 25° | 143 mm | 13.1 h | Mild |
| September | 30° | 21° | 90 mm | 12.2 h | Beach weather |
| October | 24° | 15° | 53 mm | 11.3 h | Sightseeing |
| November | 20° | 9° | 72 mm | 10.5 h | Sightseeing |
| December | 12° | 2° | 25 mm | 10.1 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: September — highs around 30°, nights no colder than 21°, and at most 90 mm of rain in a month.
Walking the city: October and November — highs of 20–24° and no more than 72 mm of rain a month.
Wet season: March, April, May, June and July — up to 366 mm in a single month.