All data are in degrees Fahrenheit

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Water temperature in Istanbul

Detailed information about the current water temperature in Istanbul. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Istanbul now

73.8

°F

September 10, 19:47

Trend:

stable

Yesterday:

73.9°F

Tomorrow:

73.8°F

Sunrise:

06:39

Sunset:

19:23

Day Length:

12 h. 44 min.

Istanbul in September

Minimum:

46.7°F

Average:

51.0°F

Maximum:

53.5°F

Sea water temperature in Istanbul today

As of now, in Istanbul, the water temperature is 73.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.3°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 76.1°F on 2024, while the historical minimum was 70.6°F on 2021.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 73.6°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Istanbul

Date Current Year

actual* / forecast**

last year 10 years average
Aug 27 74.8°F 74.2°F 75.3°F
Aug 28 75.0°F 72.7°F 75.3°F
Aug 29 73.7°F 72.0°F 75.3°F
Aug 30 74.1°F 72.2°F 75.4°F
Aug 31 74.1°F 71.4°F 75.4°F
Sep 1 74.6°F 74.1°F 75.4°F
Sep 2 74.6°F 75.3°F 75.6°F
Sep 3 75.0°F 76.5°F 75.6°F
Sep 4 75.2°F 76.6°F 75.5°F
Sep 5 74.7°F 76.2°F 75.3°F
Sep 6 75.1°F 75.7°F 75.0°F
Sep 7 75.3°F 74.4°F 74.7°F
Sep 8 74.6°F 74.2°F 74.6°F
Sep 9 73.9°F 72.8°F 74.3°F
Sep 10 73.8°F 74.0°F 74.1°F
Sep 11 73.8°F 74.5°F 74.1°F
Sep 12 73.7°F 74.5°F 74.0°F
Sep 13 73.7°F 74.2°F 73.9°F
Sep 14 73.7°F 74.4°F 74.0°F
Sep 15 73.6°F 73.8°F 73.9°F
Sep 16 73.5°F 73.6°F 73.7°F
Sep 17 73.5°F 73.3°F 73.7°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Istanbul by month

In Istanbul, the months July through September offer comfortable swimming conditions, which amounts to 80 swimming days.
The warmest water in Istanbul was recorded on August 1, 2018, reaching a 79.6°F. While the coldest temperature occurred on February 21, 2017, dipping to 42.7°F. The average readings by season are 50.7°F in Winter, 53.3°F in Spring, 73.1°F in Summer, and 67.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Üsküdar 72.6°F 3mi
Esenler 74.6°F 4mi
Bahçelievler 74.6°F 5mi
Bağcılar 74.6°F 5mi
Sultangazi 74.4°F 8mi
Umraniye 72.5°F 9mi
Maltepe 72.9°F 12mi
Yalova 72.1°F 30mi
Bursa 72.1°F 57mi

* current water temperature in this city

** straight line distance from Istanbul