Kunshan is warmest in August, averaging 33° by day and 26° at night. The wettest month is July with 288 mm, and the year brings about 1526 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 10° | 1° | 62 mm | 7° | 10.2 h | Cool |
| February | 11° | 2° | 87 mm | 7° | 10.9 h | Cool |
| March | 16° | 6° | 115 mm | 11° | 11.8 h | Mild |
| April | 20° | 11° | 96 mm | 15° | 12.8 h | Sightseeing |
| May | 25° | 17° | 105 mm | 20° | 13.6 h | Beach weather |
| June | 29° | 21° | 246 mm | 24° | 14.0 h | Rainy season |
| July | 32° | 25° | 288 mm | 28° | 13.9 h | Rainy season |
| August | 33° | 26° | 136 mm | 30° | 13.1 h | Mild |
| September | 29° | 21° | 192 mm | 27° | 12.2 h | Rainy season |
| October | 23° | 16° | 78 mm | 22° | 11.2 h | Sightseeing |
| November | 18° | 10° | 96 mm | 17° | 10.4 h | Sightseeing |
| December | 11° | 3° | 25 mm | 10° | 10.0 h | Cool |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: May — highs around 25°, nights no colder than 17°, and at most 105 mm of rain in a month. The sea sits at 20–20° then.
Walking the city: April, October and November — highs of 18–23° and no more than 96 mm of rain a month.
Wet season: June, July and September — up to 288 mm in a single month.