Measurements:
°C
°F
CURRENT WEATHER
02:09
Istanbul
70°F
SW 11 mph
Feels like: 70°F
Precip: 5%
World Resorts Turkey Istanbul Weather

14 Day Weather Forecast

09.09
wed
DAY
80°F
SW 14 mph
precip
2%
NIGHT
74°F
SW 11 mph
precip
5%
09.10
thu
DAY
82°F
SW 11 mph
precip
2%
NIGHT
74°F
SW 9 mph
precip
5%
09.11
fri
DAY
82°F
SW 9 mph
precip
1%
NIGHT
74°F
SW 10 mph
precip
6%
09.12
sat
DAY
84°F
SW 12 mph
precip
2%
NIGHT
74°F
SW 9 mph
precip
8%
09.13
sun
DAY
80°F
S 4 mph
precip
2%
NIGHT
74°F
SW 11 mph
precip
7%
09.14
mon
DAY
78°F
S 14 mph
precip
23%
NIGHT
72°F
S 8 mph
precip
17%
09.15
tue
DAY
78°F
S 10 mph
precip
15%
NIGHT
72°F
SW 10 mph
precip
26%
09.16
wed
DAY
80°F
SW 12 mph
precip
1%
NIGHT
72°F
SW 8 mph
precip
15%
09.17
thu
DAY
80°F
SW 2 mph
precip
2%
NIGHT
74°F
SW 2 mph
precip
3%
09.18
fri
DAY
82°F
NW 4 mph
precip
1%
NIGHT
74°F
SW 7 mph
precip
4%
09.19
sat
DAY
80°F
NW 5 mph
precip
3%
NIGHT
68°F
E 9 mph
precip
43%
09.20
sun
DAY
62°F
E 20 mph
precip
15%
NIGHT
58°F
E 10 mph
precip
50%
09.21
mon
DAY
68°F
SW 2 mph
precip
6%
NIGHT
64°F
W 6 mph
precip
9%
09.22
tue
DAY
70°F
N 4 mph
precip
1%
NIGHT
70°F
W 10 mph
precip
5%

Istanbul Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Istanbul was 76.3°F. The maximum and minimum values were 73.8°F and 79.2°F respectively.

Istanbul on the Weather Map

Best Time to Visit Istanbul
The most sunny months:
July 28 days
August 28 days
June 23 days
The most warm months:
July 88.7 °F
August 88.4 °F
June 83.1 °F
Warmest sea temperature:
August 78.6 °F
July 77.1 °F
September 76.0 °F
The most cold months:
January 48.5 °F
February 49.8 °F
December 53.2 °F
The most rainy months:
January 5 days
December 4 days
February 3 days
The most windy months:
August 13 mph
September 12 mph
July 12 mph
more details
Turkey Resorts:
NAME
F°
Alanya +82
Antalya +78
Beldibi +74
Belek +80
Bodrum +76
Camyuva +74
Fethiye +82
Istanbul +70
Kas +74
Kemer +74
Kusadasi +70
Marmaris +76
Okurcalar +82
Oludeniz +82
Side +76
all resorts
24 Hours Weather Forecast
Istanbul
Local time: 02:09
09 sep, wednesday
0300 70°F
SW
11 mph
0600 72°F
SW
11 mph
0900 74°F
SW
13 mph
1200 80°F
SW
14 mph
1500 80°F
SW
17 mph
1800 78°F
SW
17 mph
2100 74°F
SW
14 mph
10 sep, thursday
0000 74°F
SW
11 mph