World Resorts Turkey Istanbul Weather

Istanbul Sea Temperature in October

Average sea water temperature in October:
+66.7°F
Minimum sea water temperature in October: 73.2°F
Maximum sea water temperature in October: 58.8°F

Daily sea water temperature in October, °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.

Monthly sea water temperature in Istanbul, °F

Which Turkey resorts have warmest sea in October?

Place name October 2025 October 2024
Iskenderun 79.2°F 79.6°F
Adana 78.7°F 79.5°F
Mersin 78.6°F 79.8°F
Alanya 78.3°F 79.6°F
Konakli 78.2°F 79.5°F
Turkler 78.2°F 79.6°F
Obagol 78.2°F 79.6°F
Avsallar 78.2°F 79.6°F
Gazimagusa 78.2°F 79.1°F
Mahmutlar 78.1°F 79.5°F
Incekum 78.1°F 79.5°F
Okurcalar 78.1°F 79.5°F
Gazipasa 78.0°F 79.6°F
Kargicak 78.0°F 79.3°F
Kyrenia 78.0°F 79.0°F
Bogazkent 77.8°F 79.0°F
Colakli 77.6°F 79.0°F
Manavgat 77.6°F 79.0°F
Tekirova 77.6°F 78.9°F
Kizilagac 77.6°F 79.0°F

Best time for vacation in Istanbul

Sunniest months:
July 28 days
August 28 days
June 22 days
Warmest months:
July 85.0 °F
August 84.7 °F
June 79.8 °F
Warmest sea temp:
August 75.8 °F
July 74.5 °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 13.7 mph
July 12.0 mph
September 11.9 mph

Istanbul on a weather map

Istanbul
+63°F
NE 13 mph
Feels like: +63°F
Precip.: 100%
Places in Turkey:
Name
°F
+68°F
+70°F
+68°F
+70°F
+70°F
+68°F
+72°F
+70°F
+70°F
+68°F
+68°F
+72°F
+70°F
+63°F
+72°F
24 Hours Forecast
Istanbul
Local time: 07:53
May 17, sunday
0900
63°F
NE
13 mph
1200
66°F
E
11 mph
1500
68°F
SE
7 mph
1800
64°F
S
13 mph
2100
59°F
SE
3 mph
May 18, monday
0000
59°F
SE
9 mph
0300
55°F
SE
4 mph
0600
55°F
SE
4 mph
Units of measurement: °C / °F