Suzhou climate: monthly averages: annual mean temperature 16.4 C; warmest month Jul (28.4 C); coldest month Jan (3.2 C).
Annual mean temperature: 16.4 C
Warmest month: Jul (28.4 C)
Coldest month: Jan (3.2 C)
Wettest month: Jul (6.05 mm/day)
All-time record high: 40.2 C
All-time record low: -11.6 C
Suzhou’s climate averages **16.4°C annually**, with warm summers peaking at **28.4°C in July** and chilly winters dipping to **3.2°C in January**. The region receives **1,208 mm of rain yearly**, concentrated in July (6.05 mm/day). Extreme temperatures range from **-11.6°C** to **40.2°C**, reflecting seasonal contrasts. |July, with **6.05 mm of rain per day** on average—heavier than other months. |January’s **3.2°C** is **25.2°C cooler** than July’s **28.4°C** peak.
Annual mean temperature 16.4 C
Warmest month Jul (28.4 C)
Coldest month Jan (3.2 C)
Wettest month Jul (6.05 mm/day)
All-time record high 40.2 C
All-time record low -11.6 C
Annual precipitation 1,208 mm / year
Coordinates 31.30408, 120.59538
Population 6,715,559
Average monthly temperature and rainfall in Suzhou
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
3.2
1.92
21.3
-11.6
Feb
5.4
2.50
25.3
-9.9
Mar
9.7
2.44
27.4
-6.3
Apr
15.5
3.16
33.2
0.4
May
21.0
2.97
37.7
8.1
Jun
24.9
5.96
38.0
12.9
Jul
28.4
6.05
40.2
17.8
Aug
28.1
5.14
40.0
17.5
Sep
23.8
3.87
36.2
11.1
Oct
18.3
2.12
32.9
4.0
Nov
12.3
2.12
29.1
-5.7
Dec
5.3
1.40
21.6
-8.0
What the Suzhou climate table shows
Values are multi-decadal climatological averages for the 31.30408, 120.59538 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.