İstanbul Water Temperature

(Today) 2023

21.9°C / 71.4°F

The water will feel tepid. Swimming will be tolerable without a wetsuit, although it will take a little getting used to. If you intend to stay in the water for a while a 3/2mm wetsuit will be ideal.

Current weather

24°C / 75°F
(clear sky)
Partly cloudy
Wind
7 mph
Humidity
60%

The measurements for the water temperature in İstanbul, Istanbul are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly İstanbul water temperature derived from many years of historical sea surface temperature data.

İstanbul average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in İstanbul
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 6.2 6.3 6.5 7.5 13 18.3 21.6 22.6 20.8 15.8 11.3 8.2
Max °C 10.4 9.2 10.3 13.3 18.4 24.2 27.5 27.2 24.6 21.6 17 13.5
Min °F 44.8 44.5 45.2 47.8 57.6 67.3 73.2 74.5 71 62.8 54.6 48.8
Max °F 49 47.4 49 53.6 63 73.2 79.1 79.1 74.8 68.6 60.3 54.1

The warmest water temperature is in August with an average around 76.8°F / 24.9°C. The coldest month is February with an average water temperature of 45.9°F / 7.7°C.