Current sea water temperature:
+70.0°F
| Minimum sea water temperature in June: | 75.6°F |
| Maximum sea water temperature in June: | 61.2°F |
| Average sea water temperature in June: | 69.2°F |
| more information | |
14 days
forecast
forecast
| Istanbul |
monthly
weather
weather
| Istanbul |
Sea water temperature for the last 10 days:
| June 26 | 70.0°F | June 21 | 67.6°F |
| June 25 | 69.3°F | June 20 | 68.2°F |
| June 24 | 68.7°F | June 19 | 68.9°F |
| June 23 | 68.7°F | June 18 | 68.4°F |
| June 22 | 68.4°F | June 17 | 67.8°F |
Monthly sea water temperature, °F
When is the warmest sea in Istanbul?
Based on the data about daily sea water temperature for the last three years the warmest sea in Istanbul was noticed in August, July and September.
Monthly Sea Temperatures in Istanbul, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.9°F. The highest and lowest sea temperatures during the month were 76.3°F and 70.3°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 72.9°F. The highest and lowest sea temperatures during the month were 75.9°F and 69.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 73.7°F. The highest and lowest sea temperatures during the month were 76.3°F and 71.4°F.
current
weather
weather
| Istanbul |
weather in
June
June
| Istanbul |
Best time for vacation in Istanbul
Istanbul on a weather map
Places in Turkey:
Name
°F
24 Hours Forecast
Istanbul
Local time: 15:21
June 26, friday
1800
81°F
SW
17 mph
17 mph
2100
75°F
SW
14 mph
14 mph
June 27, saturday
0000
73°F
SW
11 mph
11 mph
0300
72°F
SW
10 mph
10 mph
0600
72°F
SW
11 mph
11 mph
0900
77°F
SW
15 mph
15 mph
1200
82°F
SW
17 mph
17 mph
1500
82°F
SW
19 mph
19 mph
