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

68.8

°F

October 18, 10:04

Trend:

stable

Yesterday:

69.1°F

Tomorrow:

68.9°F

Sunrise:

07:19

Sunset:

18:18

Day Length:

10 h. 59 min.

Istanbul in October

Minimum:

46.6°F

Average:

50.1°F

Maximum:

53.0°F

Sea water temperature in Istanbul today

As of now, in Istanbul, the water temperature is 68.8°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 2.8°F higher 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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 71.1°F on 2020, while the historical minimum was 64.9°F on 2021.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 68.2°F, the minimum temperature may reach 67.6°F, and the maximum might stay at 68.9°F.

Daily water temperature in Istanbul

Date Current Year

actual* / forecast**

last year 10 years average
Oct 4 70.5°F 70.8°F 69.7°F
Oct 5 70.7°F 70.8°F 69.5°F
Oct 6 71.1°F 71.1°F 69.3°F
Oct 7 71.0°F 70.8°F 68.9°F
Oct 8 71.1°F 70.7°F 68.7°F
Oct 9 70.7°F 70.8°F 68.4°F
Oct 10 71.1°F 69.4°F 68.1°F
Oct 11 70.8°F 69.7°F 68.1°F
Oct 12 70.3°F 69.4°F 67.9°F
Oct 13 69.8°F 69.0°F 67.6°F
Oct 14 70.4°F 71.4°F 67.6°F
Oct 15 69.4°F 69.5°F 67.1°F
Oct 16 69.6°F 69.8°F 66.8°F
Oct 17 69.1°F 69.1°F 66.3°F
Oct 18 68.8°F 67.3°F 66.1°F
Oct 19 68.9°F 68.3°F 66.1°F
Oct 20 68.6°F 68.2°F 65.8°F
Oct 21 68.3°F 67.5°F 65.6°F
Oct 22 68.2°F 67.6°F 65.4°F
Oct 23 68.0°F 67.4°F 65.2°F
Oct 24 67.7°F 67.9°F 64.9°F
Oct 25 67.6°F 67.1°F 64.8°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 17, 2014, reaching a 80.2°F. While the coldest temperature occurred on February 21, 2017, dipping to 42.7°F. The average readings by season are 50.4°F in Winter, 53.4°F in Spring, 73.5°F in Summer, and 67.0°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Üsküdar 69.2°F 3mi
Esenler 68.7°F 4mi
Bahçelievler 68.7°F 5mi
Bağcılar 68.7°F 5mi
Sultangazi 69.3°F 8mi
Umraniye 69.3°F 9mi
Maltepe 69.6°F 12mi
Yalova 70.0°F 30mi
Bursa 70.3°F 57mi

* current water temperature in this city

** straight line distance from Istanbul