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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

57.7

°F

May 15, 18:02

Trend:

stable

Yesterday:

59.9°F

Tomorrow:

58.0°F

Sunrise:

05:47

Sunset:

20:15

Day Length:

14 h. 28 min.

Istanbul in May

Minimum:

47.8°F

Average:

51.3°F

Maximum:

53.8°F

Sea water temperature in Istanbul today

As of now, in Istanbul, the water temperature is 57.7°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 1.9°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 rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 63.3°F on 2016, while the historical minimum was 56.3°F on 2023.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 58.7°F, with minimum temperature starting at 58.0°F, while the maximum might reach 59.5°F.

Daily water temperature in Istanbul

Date Current Year

actual* / forecast**

 last year 10 years average
May 1 54.8°F 53.3°F 55.6°F
May 2 54.7°F 53.8°F 55.8°F
May 3 54.6°F 52.4°F 55.8°F
May 4 54.0°F 53.4°F 56.0°F
May 5 54.3°F 54.3°F 56.3°F
May 6 54.1°F 54.0°F 56.4°F
May 7 54.5°F 55.9°F 57.0°F
May 8 55.5°F 57.4°F 57.4°F
May 9 55.5°F 58.7°F 57.7°F
May 10 57.1°F 59.1°F 58.1°F
May 11 58.7°F 59.5°F 58.5°F
May 12 59.2°F 59.6°F 58.6°F
May 13 59.2°F 58.2°F 58.6°F
May 14 59.9°F 57.5°F 59.1°F
May 15 57.7°F 57.5°F 59.6°F
May 16 58.0°F 57.6°F 59.8°F
May 17 58.4°F 58.0°F 60.2°F
May 18 58.4°F 57.0°F 60.3°F
May 19 58.7°F 56.1°F 60.5°F
May 20 58.9°F 58.4°F 60.8°F
May 21 59.2°F 59.3°F 61.0°F
May 22 59.5°F 60.9°F 61.4°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

January

February

March

April

May

June

July

August

September

October

November

December

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, 73.2°F in Summer, and 67.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Üsküdar 57.2°F 3mi
Esenler 58.2°F 4mi
Bahçelievler 58.2°F 5mi
Bağcılar 58.2°F 5mi
Sultangazi 56.9°F 8mi
Umraniye 56.8°F 9mi
Maltepe 59.4°F 12mi
Yalova 58.7°F 30mi
Bursa 61.9°F 57mi

* current water temperature in this city

** straight line distance from Istanbul