Istanbul Weather in August
In August, Istanbul averages a high of 29°C (84°F) and a low of 20°C (68°F), from 41 years of daily records (1971–2025).
29°C
Average high
84°F
20°C
Average low
68°F
39°C
Record high
102°F · August 4, 2023
12°C
Record low
54°F · August 30, 1981
What August Is Like in Istanbul
- Istanbul's hottest August day on record is a recent one: 39°C (102°F) on August 4, 2023.
- August in Istanbul has become 4.0°C (7.2°F) warmer on average: the 2010–2024 average against 1970–1989.
- 8 of the 10 warmest Augusts on record in Istanbul have come since 2010.
- August 2024 was the 2nd warmest August in 41 years of records, 3.2°C (5.8°F) above the long-run average.
At least 1 mm of rain falls on 41% of August days.
Warmest: 2024 (32.7°C)Latest: 2024 (32.7°C)10-year averageLong-run average (28.8°C)
Look Up a Day in August
See the weather in Istanbul on any August date, year by year.
Source: NOAA GHCN-Daily, Istanbul (1971–2007); Istanbul Bolge (Kartal) (2014–2025). Averages cover 1971–2025. How we compute this