26.08
wed
wed
Day
81°F
SE 1 mph
Precip.
2%
2%
Night
75°F
SW 7 mph
Precip.
9%
9%
27.08
thu
thu
Day
81°F
S 13 mph
Precip.
2%
2%
Night
73°F
SW 11 mph
Precip.
7%
7%
28.08
fri
fri
Day
79°F
S 13 mph
Precip.
2%
2%
Night
72°F
SW 6 mph
Precip.
3%
3%
29.08
sat
sat
Day
77°F
SW 2 mph
Precip.
6%
6%
Night
73°F
SW 4 mph
Precip.
6%
6%
30.08
sun
sun
Day
79°F
W 2 mph
Precip.
4%
4%
Night
73°F
W 9 mph
Precip.
7%
7%
31.08
mon
mon
Day
75°F
S 13 mph
Precip.
15%
15%
Night
72°F
W 9 mph
Precip.
5%
5%
01.09
tue
tue
Day
79°F
S 5 mph
Precip.
1%
1%
Night
73°F
W 4 mph
Precip.
2%
2%
sea water
temperature
temperature
| Istanbul |
monthly
weather
weather
| Istanbul |
current
weather
weather
| Istanbul |
14 days
forecast
forecast
| Istanbul |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 73.4°F. The highest and lowest sea temperatures during the month were 75.6°F and 69.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 73.7°F. The highest and lowest sea temperatures during the month were 76.3°F and 71.4°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: 01:41
August 26, wednesday
0300
73°F
SW
7 mph
7 mph
0600
72°F
SW
4 mph
4 mph
0900
75°F
SW
2 mph
2 mph
1200
81°F
SE
1 mph
1 mph
1500
86°F
S
9 mph
9 mph
1800
82°F
S
13 mph
13 mph
2100
77°F
SW
9 mph
9 mph
August 27, thursday
0000
75°F
SW
7 mph
7 mph
