This reference page collects istanbul climate: monthly averages in one place: annual mean temperature 15.2 C; warmest month Aug (25.5 C); coldest month Jan (5.8 C); wettest month Dec (2.65 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 15.2 C
Warmest month Aug (25.5 C)
Coldest month Jan (5.8 C)
Wettest month Dec (2.65 mm/day)
All-time record high 38.1 C
All-time record low -5.9 C
Annual precipitation 624 mm / year
Coordinates 41.0082, 28.9784
Population 15,800,000
Average monthly temperature and rainfall in Istanbul
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
5.8
2.55
17.5
-5.9
Feb
6.5
2.41
18.1
-5.7
Mar
8.6
1.72
22.5
-2.7
Apr
12.1
1.39
25.4
0.5
May
17.4
1.14
30.1
7.3
Jun
22.3
1.20
38.0
13.2
Jul
25.1
0.64
38.1
17.2
Aug
25.5
0.71
36.5
18.1
Sep
21.9
1.81
34.9
12.4
Oct
16.9
2.25
30.7
5.7
Nov
12.3
2.09
23.2
0.3
Dec
7.8
2.65
20.2
-3.3
What the Istanbul climate table shows
Values are multi-decadal climatological averages for the 41.0082, 28.9784 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 istanbul climate: monthly averages come from?
From a public open API that is queried automatically and cached after every successful run.
How often is istanbul climate: monthly averages updated?
The build runs on a schedule, so values refresh at least daily and old pages stay live.