World Resorts Turkey Istanbul Weather

Istanbul Sea Temperature in September

Average sea water temperature in September:
+73.4°F
Minimum sea water temperature in September: 78.4°F
Maximum sea water temperature in September: 68.5°F

Daily sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 72.6°F. The highest and lowest sea temperatures during the month were 75.4°F and 68.9°F.

Monthly sea water temperature in Istanbul, °F

Which Turkey resorts have warmest sea in September?

Place name September 2026 September 2025
Arsuz 84.9°F 83.9°F
Iskenderun 84.5°F 83.9°F
Karatas 84.4°F 84.1°F
Mersin 84.4°F 83.7°F
Adana 84.3°F 83.4°F
Avsallar 84.2°F 84.1°F
Incekum 84.2°F 83.9°F
Okurcalar 84.2°F 83.9°F
Turkler 84.2°F 84.2°F
Alanya 84.2°F 84.1°F
Konakli 84.1°F 84.1°F
Obagol 84.1°F 84.1°F
Mahmutlar 84.1°F 84.0°F
Kargicak 84.1°F 83.9°F
Kyrenia 84.0°F 83.2°F
Gazipasa 83.9°F 83.8°F
Aydincik 83.8°F 83.0°F
Bogazkent 83.7°F 83.8°F
Kizilot 83.7°F 83.4°F
Colakli 83.7°F 83.7°F

Best time for vacation in Istanbul

Sunniest months:
July 28 days
August 28 days
June 23 days
Warmest months:
July 84.8 °F
August 84.6 °F
June 79.7 °F
Warmest sea temp:
August 75.7 °F
July 74.4 °F
September 73.4 °F
Coldest months:
January 48.6 °F
February 49.8 °F
December 52.9 °F
Rainiest months:
January 5 days
December 4 days
February 3 days
Windiest months:
August 13.5 mph
July 11.8 mph
September 11.8 mph

Istanbul on a weather map

Istanbul
+55°F
NW 4 mph
Feels like: +55°F
Precip.: 2%
Places in Turkey:
Name
°F
+63°F
+63°F
+63°F
+63°F
+61°F
+64°F
+61°F
+61°F
+63°F
+64°F
+63°F
+63°F
+55°F
+64°F
+61°F
24 Hours Forecast
Istanbul
Local time: 16:01
November 09, monday
1800
54°F
NW
2 mph
2100
52°F
SW
2 mph
November 10, tuesday
0000
52°F
E
4 mph
0300
52°F
NE
3 mph
0600
52°F
NE
5 mph
0900
50°F
N
6 mph
1200
52°F
NE
6 mph
1500
54°F
NE
6 mph
Units of measurement: °C / °F