World Resorts

Turkey

Istanbul Weather

Istanbul 14 Days Forecast

19.09
sat

Day

75°F

SW 4 mph

Precip.
12%

Night

68°F

SW 8 mph

Precip.
5%

20.09
sun

Day

75°F

SW 11 mph

Precip.
10%

Night

70°F

SW 7 mph

Precip.
7%

21.09
mon

Day

75°F

NW 2 mph

Precip.
3%

Night

72°F

W 2 mph

Precip.
4%

22.09
tue

Day

70°F

S 19 mph

Precip.
11%

Night

63°F

E 7 mph

Precip.
5%

23.09
wed

Day

64°F

SE 16 mph

Precip.
36%

Night

63°F

E 1 mph

Precip.
3%

24.09
thu

Day

68°F

NE 10 mph

Precip.
9%

Night

66°F

N 4 mph

Precip.
1%

25.09
fri

Day

70°F

N 3 mph

Precip.
1%

Night

64°F

W 8 mph

Precip.
3%

26.09
sat

Day

73°F

SW 9 mph

Precip.
11%

Night

68°F

SW 6 mph

Precip.
17%

27.09
sun

Day

66°F

S 16 mph

Precip.
16%

Night

61°F

SW 12 mph

Precip.
20%

28.09
mon

Day

66°F

SW 9 mph

Precip.
1%

Night

61°F

SW 7 mph

Precip.
3%

29.09
tue

Day

66°F

SW 6 mph

Precip.
14%

Night

63°F

W 5 mph

Precip.
4%

30.09
wed

Day

68°F

N 2 mph

Precip.
1%

Night

68°F

NW 4 mph

Precip.
13%

01.10
thu

Day

72°F

NE 7 mph

Precip.
10%

Night

70°F

NE 4 mph

Precip.
2%

02.10
fri

Day

66°F

S 20 mph

Precip.
24%

Night

61°F

S 19 mph

Precip.
18%

sea water
temperature

Istanbul

monthly
weather

Istanbul

current
weather

Istanbul

7 days
forecast

Istanbul

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2026

2025

2024

The average sea water temperature in September of 2026 was 73.6°F. The highest and lowest sea temperatures during the month were 75.4°F and 71.1°F.

Show year:

2025

2024

2023

The average sea water temperature in October of 2025 was 67.3°F. The highest and lowest sea temperatures during the month were 70.9°F and 63.5°F.