Current sea water temperature:
+73.2°F
| Minimum sea water temperature in July: | 79.9°F |
| Maximum sea water temperature in July: | 68.2°F |
| Average sea water temperature in July: | 74.5°F |
| more information | |
14 days
forecast
forecast
| Istanbul |
monthly
weather
weather
| Istanbul |
Sea water temperature for the last 10 days:
| July 16 | 73.2°F | July 11 | 70.7°F |
| July 15 | 72.5°F | July 10 | 72.3°F |
| July 14 | 73.0°F | July 9 | 72.7°F |
| July 13 | 71.8°F | July 8 | 71.2°F |
| July 12 | 71.1°F | July 7 | 71.8°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 72.0°F. The highest and lowest sea temperatures during the month were 73.2°F and 70.3°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
July
July
| Istanbul |
Best time for vacation in Istanbul
Istanbul on a weather map
Places in Turkey:
Name
°F
24 Hours Forecast
Istanbul
Local time: 19:48
July 16, thursday
2100
77°F
SW
12 mph
12 mph
July 17, friday
0000
75°F
W
9 mph
9 mph
0300
73°F
SW
6 mph
6 mph
0600
73°F
SW
7 mph
7 mph
0900
79°F
SW
9 mph
9 mph
1200
84°F
SW
12 mph
12 mph
1500
84°F
SW
15 mph
15 mph
1800
82°F
SW
14 mph
14 mph
