24.12
wed
wed
Day
54°F
W 4 mph
Precip.
0%
0%
Night
52°F
SW 15 mph
Precip.
0%
0%
25.12
thu
thu
Day
52°F
SW 17 mph
Precip.
100%
100%
Night
46°F
SW 16 mph
Precip.
100%
100%
26.12
fri
fri
Day
48°F
SW 5 mph
Precip.
0%
0%
Night
45°F
E 7 mph
Precip.
0%
0%
27.12
sat
sat
Day
41°F
S 15 mph
Precip.
100%
100%
Night
39°F
SE 2 mph
Precip.
0%
0%
28.12
sun
sun
Day
43°F
NE 13 mph
Precip.
0%
0%
Night
39°F
NE 16 mph
Precip.
54%
54%
29.12
mon
mon
Day
41°F
S 15 mph
Precip.
45%
45%
Night
36°F
E 12 mph
Precip.
0%
0%
30.12
tue
tue
Day
43°F
NE 19 mph
Precip.
0%
0%
Night
43°F
NE 12 mph
Precip.
0%
0%
sea water
temperature
temperature
| Istanbul |
monthly
weather
weather
| Istanbul |
current
weather
weather
| Istanbul |
14 days
forecast
forecast
| Istanbul |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 57.9°F. The highest and lowest sea temperatures during the month were 60.4°F and 55.0°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 50.5°F. The highest and lowest sea temperatures during the month were 52.3°F and 49.3°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: 05:48
December 24, wednesday
0600
48°F
W
4 mph
4 mph
0900
50°F
W
4 mph
4 mph
1200
54°F
W
4 mph
4 mph
1500
55°F
W
5 mph
5 mph
1800
54°F
SW
9 mph
9 mph
2100
52°F
SW
13 mph
13 mph
December 25, thursday
0000
52°F
SW
15 mph
15 mph
0300
52°F
SW
16 mph
16 mph
