Sea of Marmara Water Temperature Today & Regional Overview
We find every place where you can swim and show you the water temperature there today and throughout the year.
Current Water Temperature
The water temperature in the Sea of Marmara today ranges from 20.4°C (Esenkoy, Turkey) to 22.8°C (Cardak, Turkey).
As of today, the minimum water temperature in the Sea of Marmara ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Sea Temperature Trends
Over the past month, the water temperature in the Sea of Marmara has increased by 6°C. In general, the sea water temperature remains within the statistical range for this time of year.
Water Temperature and Swimming Conditions Throughout the Year
| Month | Min | Max |
|---|---|---|
| January | 5°C | 16°C |
| February | 6°C | 15°C |
| March | 6°C | 14°C |
| April | 7°C | 17°C |
| May | 12°C | 21°C |
| June | 16°C | 26°C |
| July | 21°C | 29°C |
| August | 22°C | 28°C |
| September | 19°C | 27°C |
| October | 14°C | 24°C |
| November | 10°C | 21°C |
| December | 7°C | 18°C |
The Sea of Marmara, an inland sea linking the Aegean and Black Seas, experiences notable seasonal variation in surface water temperature. In winter months, surface temperatures commonly range from about 7°C to 12°C, with the coldest values in sheltered and deeper basins. Spring brings a steady warming, typically from around 10°C up to 18°C by late spring. During summer the sea is at its warmest, with surface temperatures generally between 20°C and 26°C and occasionally reaching the upper 20s°C in shallow, sheltered bays and near the islands. In autumn the water cools again, usually settling between 15°C and 22°C as the season progresses toward winter.
Swimming Conditions
Swimming in the Sea of Marmara is allowed and is a common recreational activity in summer when temperatures are comfortably warm for bathing. Popular coastal spots and the Marmara Islands host beaches and organized swimming areas, and the relatively enclosed character of the sea often produces gentle conditions compared with open ocean. However, water quality can vary locally and temporarily, influenced by urban runoff, industrial discharges and heavy rain, so swimmers should heed local advisories and beach monitoring reports. Currents and boat traffic can be factors near straits and ports, so choosing designated swimming areas is advisable. Overall, between late spring and early autumn the Sea of Marmara offers realistic and pleasant swimming opportunities where water temperatures typically reach the range most people find suitable for bathing.