27.04
mon
mon
Day
59°F
SW 18 mph
Precip.
0%
0%
Night
50°F
SW 14 mph
Precip.
0%
0%
28.04
tue
tue
Day
57°F
SW 11 mph
Precip.
0%
0%
Night
50°F
SW 9 mph
Precip.
0%
0%
29.04
wed
wed
Day
59°F
W 9 mph
Precip.
0%
0%
Night
52°F
SW 9 mph
Precip.
0%
0%
30.04
thu
thu
Day
55°F
S 12 mph
Precip.
76%
76%
Night
52°F
SW 9 mph
Precip.
86%
86%
01.05
fri
fri
Day
55°F
SW 19 mph
Precip.
0%
0%
Night
50°F
SW 7 mph
Precip.
62%
62%
02.05
sat
sat
Day
55°F
S 16 mph
Precip.
100%
100%
Night
50°F
S 6 mph
Precip.
88%
88%
03.05
sun
sun
Day
54°F
S 10 mph
Precip.
100%
100%
Night
52°F
N 3 mph
Precip.
0%
0%
04.05
mon
mon
Day
54°F
NE 12 mph
Precip.
100%
100%
Night
54°F
E 8 mph
Precip.
100%
100%
05.05
tue
tue
Day
59°F
NE 11 mph
Precip.
62%
62%
Night
57°F
N 6 mph
Precip.
0%
0%
06.05
wed
wed
Day
64°F
NE 14 mph
Precip.
0%
0%
Night
61°F
NE 3 mph
Precip.
66%
66%
07.05
thu
thu
Day
66°F
NE 10 mph
Precip.
0%
0%
Night
59°F
SW 4 mph
Precip.
0%
0%
08.05
fri
fri
Day
66°F
W 3 mph
Precip.
0%
0%
Night
59°F
SW 6 mph
Precip.
0%
0%
09.05
sat
sat
Day
68°F
W 6 mph
Precip.
0%
0%
Night
59°F
SW 7 mph
Precip.
0%
0%
10.05
sun
sun
Day
70°F
N 3 mph
Precip.
0%
0%
Night
68°F
W 4 mph
Precip.
0%
0%
sea water
temperature
temperature
| Istanbul |
monthly
weather
weather
| Istanbul |
current
weather
weather
| Istanbul |
7 days
forecast
forecast
| Istanbul |
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 50.6°F. The highest and lowest sea temperatures during the month were 53.2°F and 48.9°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 57.1°F. The highest and lowest sea temperatures during the month were 61.7°F and 51.8°F.
Air temperature in Istanbul, °F
Precipitation total in Istanbul, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Istanbul
Istanbul on a weather map
Places in Turkey:
Name
°F
24 Hours Forecast
Istanbul
Local time: 03:06
April 27, monday
0600
52°F
SW
17 mph
17 mph
0900
55°F
SW
19 mph
19 mph
1200
59°F
SW
18 mph
18 mph
1500
59°F
SW
18 mph
18 mph
1800
55°F
SW
18 mph
18 mph
2100
52°F
SW
16 mph
16 mph
April 28, tuesday
0000
50°F
SW
14 mph
14 mph
0300
48°F
SW
11 mph
11 mph
