A consolidated reference for Hamadan climate: monthly averages, rebuilt from public data on a schedule. Expect -1.5 C at the coldest (Jan) and 25.6 C at the warmest (Jul) — a 27.1 C spread. Expect a wet month and a dry month but no real season: 1.61 mm/day in Apr against 0.03 mm/day in Aug. Taken together that is roughly 285 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. Scroll for the month-by-month figures, or jump to a neighbouring location from the links below.
Annual mean temperature 11.7 C
Warmest month Jul (25.6 C)
Coldest month Jan (-1.5 C)
Wettest month Apr (1.61 mm/day)
All-time record high 40.2 C
All-time record low -18.6 C
Annual precipitation 285 mm / year
Coordinates 34.79922, 48.51456
Population 528,256
Average monthly temperature and rainfall in Hamadan
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-1.5
0.93
16.1
-18.6
Feb
0.3
1.18
16.7
-15.4
Mar
5.0
1.39
25.2
-13.6
Apr
9.8
1.61
29.0
-10.3
May
15.7
0.68
31.7
-1.7
Jun
21.8
0.19
38.7
4.8
Jul
25.6
0.08
40.2
10.3
Aug
24.6
0.03
39.0
8.3
Sep
20.0
0.08
34.8
3.4
Oct
13.5
0.76
29.1
-2.4
Nov
4.8
1.35
21.9
-13.9
Dec
0.2
1.08
17.2
-13.2
What the Hamadan climate table shows
Values are multi-decadal climatological averages for the 34.79922, 48.51456 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 1.61 mm/day in a month?
Rain is recorded as a daily mean, so 1.61 mm/day is roughly 49 mm across a 30-day month.