A consolidated reference for Chattogram climate: monthly averages, rebuilt from public data on a schedule. Expect 18.4 C at the coldest (Jan) and 28.8 C at the warmest (May) — a 10.4 C spread. Expect a wet season rather than rain year-round: Jul brings 25.21 mm/day against 0.28 mm/day in Jan. Taken together that is roughly 3,040 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. Use the table for exact numbers, or the related pages below for neighbouring locations and periods.
Annual mean temperature 25.5 C
Warmest month May (28.8 C)
Coldest month Jan (18.4 C)
Wettest month Jul (25.21 mm/day)
All-time record high 39.5 C
All-time record low 8.0 C
Annual precipitation 3,059 mm / year
Coordinates 22.3384, 91.8317
Population 3,920,222
Average monthly temperature and rainfall in Chattogram
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
18.4
0.28
29.2
8.0
Feb
21.8
0.68
32.9
8.8
Mar
26.1
1.31
36.9
13.3
Apr
28.4
4.19
39.5
20.8
May
28.8
9.84
38.0
23.4
Jun
28.4
18.37
37.2
24.4
Jul
27.9
25.21
34.3
24.4
Aug
27.8
17.12
34.4
23.9
Sep
27.8
13.17
33.9
22.9
Oct
26.9
7.52
33.1
18.3
Nov
23.6
1.87
31.9
12.7
Dec
19.8
0.44
28.7
9.3
What the Chattogram climate table shows
Values are multi-decadal climatological averages for the 22.3384, 91.8317 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 25.21 mm/day in a month?
Rain is recorded as a daily mean, so 25.21 mm/day is roughly 766 mm across a 30-day month.