Everything below is collected in one spot so you do not have to cross-check Hong Kong climate: monthly averages by hand. The gap between Jan and Jul is 12.5 C here: 16.0 C against 28.5 C. Precipitation peaks in Jun (9.40 mm/day) and bottoms out in Dec (0.82 mm/day), so a 11.5x difference between the two. Taken together that is roughly 1,395 mm of rain a year for the grid cell. Because each page is rebuilt independently, one unavailable upstream never takes the rest of the site down. The table underneath carries the per-month breakdown; the related pages cover the same dataset nearby.
Annual mean temperature 23.4 C
Warmest month Jul (28.5 C)
Coldest month Jan (16.0 C)
Wettest month Jun (9.40 mm/day)
All-time record high 35.6 C
All-time record low 2.8 C
Annual precipitation 1,398 mm / year
Coordinates 22.2783, 114.1747
Population 7,396,076
Average monthly temperature and rainfall in Hong Kong
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
16.0
1.16
26.8
2.8
Feb
17.8
1.02
27.9
5.4
Mar
20.2
2.32
29.3
6.9
Apr
23.3
3.45
31.8
12.3
May
26.3
6.76
34.5
18.4
Jun
27.9
9.40
34.3
20.5
Jul
28.5
5.97
35.6
23.9
Aug
28.4
7.03
34.0
24.2
Sep
27.6
5.35
33.9
20.5
Oct
25.1
1.59
32.2
13.9
Nov
21.6
1.01
30.9
8.5
Dec
17.1
0.82
27.4
3.6
What the Hong Kong climate table shows
Values are multi-decadal climatological averages for the 22.2783, 114.1747 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
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.
How much rain is 9.40 mm/day in a month?
Rain is recorded as a daily mean, so 9.40 mm/day is roughly 286 mm across a 30-day month.