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Water Temperature in the Sea of Marmara in Istanbul, Turkey: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Istanbul in Turkey, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. 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 in Istanbul
10.6°C
TODAY
10.4°C
YESTERDAY
11.0°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Sea of Marmara in Istanbul is 10.6°C. The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used.
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.
Water Temperature Chart for Sea of Marmara in Istanbul Over the Last 30 Days
The water temperature in Istanbul today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in Istanbul will remain nearly unchanged in the coming days, its value will be 11.5°C.
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across Turkey to enhance accuracy.
Water temperature data for Istanbul and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Apr 11 | 11.0°C | 10.3°C | |
| Apr 12 | 10.5°C | 10.3°C | |
| Apr 13 | 10.6°C | 10.3°C | |
| Apr 14 | 10.5°C | 10.3°C | |
| Apr 15 | 10.1°C | 10.8°C | |
| Apr 16 | 10.2°C | 10.8°C | |
| Apr 17 | 10.4°C | 11.0°C | |
| Apr 18 | 10.6°C | 11.8°C | |
| Apr 19 | 12.0°C | 10.7°C | |
| Apr 20 | 12.5°C | 10.9°C | |
| Apr 21 | 12.3°C | 11.0°C | |
| Apr 22 | 12.3°C | 11.1°C | |
| Apr 23 | 12.3°C | 11.2°C | |
| Apr 24 | 12.5°C | 11.3°C | |
| Apr 25 | 12.5°C | 11.4°C | |
| Apr 26 | 12.8°C | 11.5°C |
Sea Temperature in Istanbul Throughout the Year
Throughout the year, the sea temperature in Istanbul exceeds 77°F (25°C) for 32 days, exceeds 72°F (22°C) for 100 days, and exceeds 64°F (18°C) for 146 days.
Below is the annual chart of sea temperature changes in the Sea of Marmara in Istanbul.
January
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 10°C | 13°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 6°C | 8.5°C | 11°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 9°C | 11°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 11°C | 15°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 12°C | 16°C | 20°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 17°C | 21°C | 25°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 21°C | 25°C | 29°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 23°C | 25.5°C | 28°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 20°C | 23°C | 26°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 14°C | 19°C | 24°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 10°C | 15°C | 20°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 11°C | 15°C |
Monthly Water Temperature Histogram for Sea of Marmara in Istanbul
You can explore detailed data on how the water temperature in Istanbul varies each month:
What Beaches Are There In and Around Istanbul?
Kilyos Kumburgaz Beach
Kilyos Kumburgaz Beach is a 4-stars sandy beach, located in a 3 km (2 miles) radius of Istanbul. There is parking. There are restrooms. There are shops. There are cafés. Kilyos Kumburgaz Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible.
Caddebostan Plaji 1
Caddebostan Plaji 1 is a 3-stars sandy beach, located in a 8 km (5 miles) radius of Istanbul. There are lifeguards on the beach. There is parking. There are restrooms.
Caddebostan Beach
Caddebostan Beach is a 4-stars sandy beach, located in a 8 km (5 miles) radius of Istanbul. There is parking. There are restrooms. There are cafés. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Erenkoy Halk Plaji
Erenkoy Halk Plaji is a 2-stars sandy beach, located in a 9 km (6 miles) radius of Istanbul. There is parking. There are cafés.
Sheraton Istanbul Atakoy Hotel Sheraton
Sheraton Istanbul Atakoy Hotel Sheraton is a 2-stars sandy beach, located in a 10 km (6 miles) radius of Istanbul. There is parking. There are restrooms.
Atarli Beach
Atarli Beach is a 2-stars sandy beach, located in a 10 km (6 miles) radius of Istanbul. There are cafés.
Istanbul Weather
APRIL 19
11°C / 16°C
clear skyhumidity: 71% | wind: 2 km/h
APRIL 20
13°C / 18°C
clear skyhumidity: 65% | wind: 2 km/h
APRIL 21
13°C / 18°C
scattered clouds: 25-50%humidity: 60% | wind: 5 km/h
APRIL 22
12°C / 13°C
broken clouds: 51-84%humidity: 79% | wind: 3 km/h
Sea Temperature in the Sea of Marmara in Istanbul: General Trends and Swimming Opportunities
Istanbul Province, Turkey, located in a coastal area, experiences a temperate oceanic climate characterized by warm, moderately dry summers and cool, wet winters. This region is typically influenced by sea breezes which help to moderate the temperature.
Istanbul is located in Europe in the Northern Hemisphere at a latitude of 41 degrees, along the shores of the Sea of Marmara. Istanbul lies within the Istanbul Province in Turkey.
The average annual daytime air temperature in Istanbul is 19°C (66°F), with the average nighttime temperature being 11°C (52°F). The highest average daily temperature occurs in August, reaching 29°C (84°F), while the lowest is in January at 10°C (49°F). As for nighttime temperatures, the minimum average temperature of 3°C (37°F) is recorded in February, and the maximum is in August, reaching 20°C (68°F).
According to historical data, Istanbul experiences 98 rainy days per year, which accounts for 27 percent of all days in the year. On average, there are 8 rainy days each month. The wettest month is December, with 12 rainy days and 109 mm (4.3 inches) of precipitation, while the driest month is August, which typically has 4 rainy days and only 28 mm (1.1 inches) of precipitation.
The average annual water temperature in Sea of Marmara in Istanbul is 16°C (61°F). In February, the water reaches its lowest point of the year at 6°C (43°F), while in July, it peaks at 29°C (84°F). The months suitable for comfortable beach vacations and swimming in the Sea of Marmara are July, and August. During this period, the water temperature stays above 20°C (68°F) and can reach up to 29°C (84°F) on some days.
Geographical Location of Istanbul
Nearby Cities
Frequently Asked Questions About Istanbul and its Water Temperatures
What is the current sea temperature in Istanbul?
The water temperature today in the Sea of Marmara in Istanbul is 51°F (10.6°C).
In which months is the water temperature in Istanbul comfortable for swimming?
The water temperature in the Sea of Marmara in Istanbul is comfortable for swimming and beach vacations in July, and August.
What is the water temperature in Istanbul during the winter?
The water temperature in the Sea of Marmara in Istanbul during the winter ranges from 6°C to 15°C (43°F to 59°F).
What is the water temperature in Istanbul during the spring?
The water temperature in the Sea of Marmara in Istanbul during the spring ranges from 7°C to 20°C (45°F to 68°F).
What is the water temperature in Istanbul during the summer?
The water temperature in the Sea of Marmara in Istanbul during the summer ranges from 17°C to 29°C (63°F to 84°F).
What is the water temperature in Istanbul during the fall?
The water temperature in the Sea of Marmara in Istanbul during the fall ranges from 10°C to 26°C (50°F to 79°F).
Is it possible to swim in the sea in Istanbul at any time of the year?
The Sea of Marmara in Istanbul is quite cool, and swimming is only possible in June, July, August, September, and October when the water temperature reaches 21°C (70°F).
What sea temperatures can I expect in Istanbul in the next month?
In May, the water temperature in the Sea of Marmara in Istanbul will range between 54°F (12°C) and 68°F (20°C)