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Sea of Marmara
Fistikli, Turkey © Nuri Turan
Sea of Marmara Water Temperature: Current & Historical Data for Coastal Resorts
We find every spot where you can swim and tell you what the water temperature is there today and throughout the year
Current water temperature
62°F
minimal
64°F
average
65°F
maximum
Graph of Water Temperature Changes in the Sea of Marmara Over the Last 60 Days
Water temperature in the Sea of Marmara by month
| Month | Minimum | Maximum |
|---|---|---|
| January | 41°F | 61°F |
| February | 43°F | 59°F |
| March | 43°F | 57°F |
| April | 45°F | 63°F |
| May | 54°F | 70°F |
| June | 61°F | 79°F |
| July | 70°F | 84°F |
| August | 72°F | 82°F |
| September | 66°F | 81°F |
| October | 57°F | 75°F |
| November | 50°F | 70°F |
| December | 45°F | 64°F |
What is known about the Sea of Marmara?
Erdek, Turkey © Nesrin AltunThe Sea of Marmara, located between the Aegean and Black Seas, experiences significant seasonal variations in water temperature. During the summer months, from June to September, sea temperatures typically range from 73–82°F (23–28°C), making it warm and comfortable for swimming. Coastal areas near Istanbul, as well as the beaches along the southern Marmara coast, such as those in Yalova and Balıkesir, attract swimmers and tourists looking for calm and relatively warm waters. The sea is generally less salty than the Mediterranean but warmer than the Black Sea, providing a pleasant balance for swimming.
In winter, from December to March, the Sea of Marmara cools down considerably, with temperatures dropping to 48–57°F (9–14°C). While these conditions are too cold for most casual swimmers, some still engage in winter swimming, particularly in sheltered bays. The sea remains swimmable for a large part of the year, with spring and autumn offering moderate temperatures, making it a good option for those who prefer cooler but still enjoyable waters. The relatively calm conditions of the Sea of Marmara also make it ideal for other water activities, such as kayaking and paddleboarding.
List of Countries Bordering the Sea of Marmara
Popular Resorts of the Sea of Marmara with the Warmest Water Today
Popular Resorts on the Sea of Marmara Coast
- Istanbul, Turkey
- Bosphorus, Turkey
- Kursunlu Cumhuriyet, Turkey
- Marmara, Turkey
- Adalar, Turkey
- Princes' Islands, Turkey
- Armutlu, Turkey
- Yalova, Turkey
- Caddebostan, Turkey
- Burgazadasi, Turkey
- Heybeliada, Turkey
- Cinarcik, Turkey
- Bueyuekcekmece, Turkey
- Kursunlu, Turkey
- Erdek, Turkey
Tatlisu, Turkey © Muserref Karagul
Nearest Seas and Oceans
Frequently Asked Questions About the Sea of Marmara
What is the water temperature in the Sea of Marmara right now?
The water temperature in the Sea of Marmara today ranges from 63°F (17°C) in Izmit (Turkey) to 66°F (19°C) in Bandirma (Turkey).
Is it possible to swim in the Sea of Marmara?
Yes, it is possible to swim in the Sea of Marmara, as the water temperature is generally warm enough for swimming during the summer months.
In which month does the Sea of Marmara have the highest and lowest water temperatures?
The highest water temperature in the Sea of Marmara occurs in July, reaching 84°F (29°C), while the lowest is in January, dropping to 41°F (5°C).
Is the Sea of Marmara colder than the Thracian Sea?
Yes, the Sea of Marmara is slightly colder than the Thracian Sea, as its average annual water temperature is 63°F (17°C), while the Thracian Sea's is 66°F (19°C).
Which countries are washed by the Sea of Marmara?
The Sea of Marmara washes Turkey.
What are the most popular resorts located on the Sea of Marmara?
The most popular beach destinations on the Sea of Marmara are Istanbul (Turkey), Bosphorus (Turkey), Bueyuekcekmece (Turkey), Caddebostan (Turkey), Erdek (Turkey), Adalar (Turkey), Heybeliada (Turkey), Gemlik (Turkey), Izmit (Turkey), Mudanya (Turkey).
Do you have any extended or additional information about the Sea of Marmara?
Sea of Marmara is the Mediterranean Sea of the Atlantic Ocean, located between the European and Asia Minor parts of Turkey. In the northeast it is connected by the Bosphorus Strait with the Black Sea, in the southwest - by the Dardanelles Strait with the Aegean Sea. The shores are predominantly mountainous, in the south and east they are strongly dissected (the bays of Izmit, Gemlik, etc.). The largest islands are Marmara, Prinsevy; there are underwater reefs off the northern coast. Small rivers Granik, Susurluk and others flow into the sea (almost all - from the Asian coast). The sea does not freeze; in winter the surface water temperature is 9 ° C, in summer up to 29 ° C. The hydrology of the sea is characterized by the exchange of waters of the Black and Aegean Seas through the straits. Salinity on the surface is up to 26 ‰, which is much higher than in the Black Sea, but much less than in the oceans. At the same time, the salinity of the bottom water is noticeably higher - up to 38 ‰, which is comparable to the salinity of the waters of the Mediterranean Sea.
Do you have a few more photos of the the Sea of Marmara?
Armutlu, Turkey © ERKAN YEREL REHBER
Heybeliada, Turkey © Murat Ilter
Gemlik, Turkey © E. G.