This reference page collects hanoi climate: monthly averages in one place: annual mean temperature 23.3 C; warmest month Jun (28.5 C); coldest month Jan (15.4 C); wettest month Aug (10.38 mm/day). Figures are refreshed automatically by a scheduled build and cached locally so the page keeps its values even when the upstream API is temporarily unavailable. Use the table below for exact numbers, or the related pages for the same dataset for neighbouring periods and locations.
Annual mean temperature 23.3 C
Warmest month Jun (28.5 C)
Coldest month Jan (15.4 C)
Wettest month Aug (10.38 mm/day)
All-time record high 41.9 C
All-time record low 1.5 C
Annual precipitation 1,606 mm / year
Coordinates 21.0278, 105.8342
Population 8,100,000
Average monthly temperature and rainfall in Hanoi
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
15.4
1.03
32.5
1.5
Feb
18.2
0.77
34.8
2.6
Mar
21.4
1.58
38.4
6.9
Apr
25.1
2.59
41.9
11.3
May
27.5
5.77
41.7
17.3
Jun
28.5
6.71
39.1
18.9
Jul
28.4
9.67
38.3
22.5
Aug
27.9
10.38
35.6
21.5
Sep
26.7
7.43
34.7
16.4
Oct
23.8
4.00
32.9
9.3
Nov
20.3
1.74
32.2
5.7
Dec
16.0
0.81
30.9
1.6
What the Hanoi climate table shows
Values are multi-decadal climatological averages for the 21.0278, 105.8342 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
Where does the data on hanoi climate: monthly averages come from?
From a public open API that is queried automatically and cached after every successful run.
How often is hanoi climate: monthly averages updated?
The build runs on a schedule, so values refresh at least daily and old pages stay live.