S
M
T
W
T
F
S
29
51°
47°
30
51°
47°
31
64°
49°
1
66°
49°
2
64°
50°
3
63°
49°
4
58°
50°
5
66°
49°
6
63°
45°
7
64°
51°
8
60°
46°
9
56°
45°
10
51°
41°
11
55°
39°
12
58°
44°
13
62°
45°
14
65°
48°
15
63°
48°
16
59°
48°
17
61°
50°
18
62°
50°
19
63°
51°
20
70°
59°
21
71°
58°
22
59°
51°
23
62°
50°
24
62°
51°
25
61°
50°
26
65°
55°
27
66°
55°
28
66°
54°
29
65°
55°
30
66°
55°
1
66°
54°
2
65°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Istanbul
Istanbul's April 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 45° and 59°. The average high for April is 64° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Istanbul. See also: May | June | July.
