Weather in Istanbul: July
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Average day temperature: | 85.0°F |
| Average night temperature: | 74.6°F | |
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Sea water temperature: | 74.5°F |
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Number of sunny days: | 28 days |
| Day length: | 14.4 - 15.1 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.6 in. | |
| more information | ||
14 days
forecast
forecast
| Istanbul |
sea water
temperature
temperature
| Istanbul |
Air temperature in July, °F
Show year:
2025
2024
2023
The highest day temperature during July of 2025 was 95°F. At the same time the lowest night temperature was 68°F. Daily and nightly averages during July were 86.5°F and 74.2°F.
Sea water temperature in Istanbul 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.
Sunny, partly cloudy and cloudy days
Mostly all days in July are sunny but cloudy days are also possible.
Precipitation total in July, in.
Precipitation total value in Istanbul in July is 0.8 in. Other months of the year show relatively similar values.
Wind speed in July, mph
The average wind speed value in July is 11.0 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in July is: 13.2.
Best time for vacation in Istanbul
Istanbul on a weather map
Places in Turkey:
Name
°F
24 Hours Forecast
Istanbul
Local time: 06:05
December 05, friday
0900
55°F
W
6 mph
6 mph
1200
63°F
SW
9 mph
9 mph
1500
63°F
W
9 mph
9 mph
1800
59°F
SW
5 mph
5 mph
2100
59°F
W
6 mph
6 mph
December 06, saturday
0000
57°F
SW
5 mph
5 mph
0300
57°F
NW
4 mph
4 mph
0600
57°F
NW
3 mph
3 mph
