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Istanbul Province

Istanbul Province Sea Temperature

This page provides detailed information about the water temperature in Istanbul Province, Turkey. All countries, cities and resorts on the coast. The range of sea temperatures for today. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Sea Temperature

6.6°C

minimal

8.5°C

average

9.0°C

maximum

Graph of Sea Temperature Changes in Istanbul Province Over the Last 60 Days

Water temperature in the Istanbul Province by month

Month	Minimum	Maximum
January	6°C	13°C
February	6°C	11°C
March	6°C	12°C
April	6°C	16°C
May	11°C	20°C
June	16°C	25°C
July	21°C	29°C
August	22°C	28°C
September	20°C	27°C
October	14°C	24°C
November	10°C	21°C
December	7°C	16°C

The Warmest Places on the Seaside in Istanbul Province Today

9°C

Guzelyali

9°C

Burgazadasi

9°C

Adalar

9°C

Uskudar

9°C

Heybeliada

9°C

Zeytinburnu

List of All Coastal Cities in Istanbul Province

Seas and Oceans that Border Istanbul Province

Water Temperature in Istanbul Province: General Trends and Swimming Opportunities

Original name of the region: İstanbul

Istanbul Province, located on the northwest coast of Turkey, is surrounded by both the Sea of Marmara to the south and the Black Sea to the north. The water temperature in this region can vary significantly depending on the season and the body of water. During the summer months, from June to September, the water in the Sea of Marmara tends to be warmer, with temperatures ranging from 22°C to 26°C (72°F to 79°F), making it quite comfortable for swimming and other water activities. The Black Sea, on the other hand, remains a bit cooler, with temperatures between 18°C and 22°C (64°F to 72°F) in summer.

In the autumn months of October and November, the Sea of Marmara gradually cools down, with temperatures ranging from 18°C to 22°C (64°F to 72°F). This is still suitable for swimming, but the water becomes cooler as the season progresses. The Black Sea, however, remains relatively cooler during the fall, with temperatures between 16°C and 20°C (61°F to 68°F). By the end of November, the temperatures start to drop significantly.

During the winter months, from December to February, the water temperature in both the Sea of Marmara and the Black Sea decreases considerably. In the Sea of Marmara, temperatures drop to around 8°C to 12°C (46°F to 54°F), while the Black Sea sees temperatures between 6°C and 10°C (43°F to 50°F). This makes swimming less appealing for most people. In the spring months of March to May, the temperatures slowly begin to rise again, gradually reaching a more pleasant range, signaling the return of warmer weather and the beach season.

Geographical Location of Istanbul Province

Frequently Asked Questions About Istanbul Province and its Water Temperatures

What is the current sea temperature on the coast of Istanbul Province in Turkey?

The sea temperature today on the coast of Istanbul Province ranges from 44°F (6.6°C) in Yalikoy to 48°F (9.0°C) in Guzelyali.

When does the sea in Istanbul Province in Turkey reach a comfortable swimming temperature?

In Istanbul Province (Turkey) the sea temperature can reach 70°F (21°C) in June, July, August, September, and October. It should be noted that the mentioned values apply to the warmest point of the region. In other areas of Istanbul Province, the values may vary.

What are the most popular seaside resorts in Istanbul Province?

The most popular places on the coast of Istanbul Province (Turkey), based on our visitors' interest in the water temperature, are cities Istanbul, Bosphorus, Bueyuekcekmece, Sile, and Caddebostan.

Which seas and oceans does the Istanbul Province have access to?

Istanbul Province (Turkey) has access to the seas: Sea of Marmara, and Black Sea.