Everything below is collected in one spot so you do not have to cross-check Chengdu climate: monthly averages by hand. The gap between Jan and Jul is 22.4 C here: 5.3 C against 27.7 C. Precipitation peaks in Jul (7.23 mm/day) and bottoms out in Dec (0.37 mm/day), so a 19.5x difference between the two. Taken together that is roughly 984 mm of rain a year for the grid cell. The same build that regenerates the sitemap refreshes these values, and unchanged pages are left untouched. The table underneath carries the per-month breakdown; the related pages cover the same dataset nearby.
Annual mean temperature 17.4 C
Warmest month Jul (27.7 C)
Coldest month Jan (5.3 C)
Wettest month Jul (7.23 mm/day)
All-time record high 39.5 C
All-time record low -5.2 C
Annual precipitation 989 mm / year
Coordinates 30.6667, 104.0667
Population 20,937,757
Average monthly temperature and rainfall in Chengdu
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
5.3
0.40
19.0
-4.8
Feb
8.3
0.49
23.6
-4.0
Mar
13.7
1.06
33.0
-0.5
Apr
19.2
2.00
36.1
3.7
May
23.1
3.10
37.6
9.2
Jun
26.1
4.29
38.9
14.8
Jul
27.7
7.23
39.5
18.5
Aug
26.6
6.49
39.1
16.9
Sep
22.6
4.25
36.0
12.2
Oct
17.7
1.91
32.1
5.8
Nov
12.2
0.77
25.9
-1.9
Dec
6.5
0.37
18.3
-5.2
What the Chengdu climate table shows
Values are multi-decadal climatological averages for the 30.6667, 104.0667 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.
Frequently asked questions
Is Chengdu climate data a forecast?
No. These are multi-decadal averages for the grid cell, not a prediction for any particular year.
Why do the numbers differ from a weather app?
An app shows one location on one day. These are long-run averages, so they smooth out single hot or cold spells.