Istanbul Weather in July
In July, Istanbul averages a high of 29°C (84°F) and a low of 20°C (68°F), from 42 years of daily records (1971–2025).
29°C
Average high
84°F
20°C
Average low
68°F
40°C
Record high
103°F · July 13, 2000
12°C
Record low
54°F · July 9, 1974
What July Is Like in Istanbul
- July in Istanbul has become 3.4°C (6.1°F) warmer on average: the 2011–2025 average against 1970–1989.
- 8 of the 10 warmest Julys on record in Istanbul have come since 2011.
- July 2025 was the 2nd warmest July in 42 years of records, 3.4°C (6.2°F) above the long-run average.
- The coldest July reading, 12°C (54°F) on July 9, 1974, has not been matched in 51 years.
At least 1 mm of rain falls on 38% of July days.
Warmest: 2024 (34.6°C)Latest: 2025 (33.7°C)10-year averageLong-run average (29.1°C)
Look Up a Day in July
See the weather in Istanbul on any July date, year by year.
Source: NOAA GHCN-Daily, Istanbul (1971–2007); Istanbul Bolge (Kartal) (2014–2025). Averages cover 1971–2025. How we compute this