Average monthly water temperature in Istanbul, Turkey

On this page you find the mean water temperature over the year in Istanbul (the Marmara Region), Turkey. Get insights into the water temperature fluctuations and discover what they mean for visitors.

Istanbul experiences water temperature shifts throughout the year. The warmest month, July, reaches an average of 25°C (77°F).

The coldest month, February, averages 8°C (46°F). Visitors during these months can leave their swimming gear at home.

Istanbul 3-Day Forecast

10-Day Forecast

More climate data for Istanbul

Temperature Rainfall Sunshine Water Temp

See the full Istanbul climate overview or explore weather in Turkey.

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