Chengdu Weather

Chengdu has a monsoon-influenced humid subtropical climate and is largely warm with high relative humidity all year. It has four distinct seasons, with moderate rainfall concentrated mainly in the warmer months, and relieved from both sweltering summers and freezing winters. The Qin Mountains (Qinling) to the far north help shield the city from cold Siberian winds in the winter; because of this, the short winter is milder than in the Lower Yangtze. The 24-hour daily mean temperature in January is 5.6 °C (42.1 °F), and snow is rare but there are a few periods of frost each winter. The summer is hot and humid, but not to the extent of the “Three Furnaces” cities of Chongqing, Wuhan, and Nanjing, all of which lie in the Yangtze basin. The 24-hour daily mean temperature in July and August is around 25 °C (77 °F), with afternoon highs sometimes reaching 33 °C (91 °F); sustained heat as found in much of eastern China is rare. Rainfall occurs most frequently and is concentrated in July and August, with very little of it in the cooler months. Chengdu also has one of the lowest annual sunshine totals nationally, with less sunshine annually than much of Northern Europe, and most days are overcast even if without rain. This is especially so in the winter months, when it is nearly continuously grey, compounded by the poor air quality. With monthly percent possible sunshine ranging from 16 percent in December to 38 percent in August, the city receives 1,073 hours of bright sunshine annually. Spring (March–April) tends to be sunnier and warmer in the day than autumn (October–November). The annual mean is 16.27 °C (61.3 °F), and extremes have ranged from −4.6 °C (24 °F) to 37.5 °C (99.5 °F).

Average Temperature
Jan
48 °F
9 °C
Feb
52 °F
11 °C
Mar
63 °F
17 °C
Apr
77 °F
25 °C
May
75 °F
24 °C
Jun
82 °F
28 °C
Jul
82 °F
28 °C
Aug
86 °F
30 °C
Sep
75 °F
24 °C
Oct
70 °F
21 °C
Nov
61 °F
16 °C
Dec
55 °F
13 °C
Humidity
Jan
66%
Feb
67%
Mar
65%
Apr
68%
May
72%
Jun
78%
Jul
89%
Aug
76%
Sep
88%
Oct
76%
Nov
75%
Dec
67%
Rain
Jan
5mm
Feb
12mm
Mar
19mm
Apr
28mm
May
67mm
Jun
113mm
Jul
153mm
Aug
69mm
Sep
44mm
Oct
29mm
Nov
12mm
Dec
5mm
Clouds
Jan
57%
Feb
77%
Mar
77%
Apr
83%
May
88%
Jun
86%
Jul
78%
Aug
67%
Sep
88%
Oct
95%
Nov
90%
Dec
63%
Air quality US AQI
Jan
167
Feb
158
Mar
145
Apr
130
May
121
Jun
101
Jul
90
Aug
101
Sep
89
Oct
106
Nov
142
Dec
160
Sun
Jan
4UVI
Feb
5UVI
Mar
5UVI
Apr
6UVI
May
6UVI
Jun
5UVI
Jul
6UVI
Aug
7UVI
Sep
5UVI
Oct
5UVI
Nov
4UVI
Dec
3UVI