What is the current water temperature in Istanbul?

Q: What is the current water temperature in Istanbul?

As of now, in Istanbul, the water temperature is 15.27°C. 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.

Turkey > Istanbul

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.

59.5

°F

May 21, 11:56

Trend:

stable

Yesterday:

59.8°F

Tomorrow:

59.6°F

Sunrise:

05:41

Sunset:

20:21

Day Length:

14 h. 40 min.

Istanbul in May

Minimum:

47.8°F

Average:

50.8°F

Maximum:

53.8°F

Sea water temperature in Istanbul today

As of now, in Istanbul, the water temperature is 59.5°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 2.4°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 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 65.8°F on 2018, while the historical minimum was 57.8°F on 2023.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 60.4°F, with minimum temperature starting at 59.6°F, while the maximum might reach 61.7°F.

Daily water temperature in Istanbul

Date	Current Year actual* / forecast**	last year	10 years average
May 7	57.6°F	55.7°F	57.5°F
May 8	58.4°F	57.0°F	57.7°F
May 9	58.2°F	56.4°F	57.9°F
May 10	57.5°F	56.6°F	58.2°F
May 11	57.7°F	56.9°F	58.3°F
May 12	57.9°F	57.4°F	58.6°F
May 13	58.1°F	55.8°F	58.7°F
May 14	58.7°F	55.8°F	59.3°F
May 15	58.5°F	56.3°F	59.9°F
May 16	58.8°F	56.5°F	60.2°F
May 17	59.3°F	56.5°F	60.5°F
May 18	58.7°F	56.4°F	60.8°F
May 19	59.5°F	57.6°F	61.3°F
May 20	59.8°F	58.0°F	61.5°F
May 21	59.5°F	57.8°F	61.9°F
May 22	59.6°F	58.7°F	62.0°F
May 23	59.6°F	59.9°F	62.0°F
May 24	59.8°F	59.6°F	62.2°F
May 25	60.2°F	59.6°F	62.6°F
May 26	60.7°F	60.7°F	63.1°F
May 27	61.3°F	61.4°F	63.7°F
May 28	61.7°F	62.0°F	64.1°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, 73.3°F in Summer, and 66.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Üsküdar	58.6°F	3mi
Esenler	60.3°F	4mi
Bahçelievler	60.3°F	5mi
Bağcılar	60.3°F	5mi
Sultangazi	59.8°F	8mi
Umraniye	59.3°F	9mi
Maltepe	61.2°F	12mi
Yalova	62.6°F	30mi
Bursa	62.3°F	57mi

* current water temperature in this city

** straight line distance from Istanbul