Istanbul Weather in October
In October, Istanbul averages a high of 20°C (68°F) and a low of 13°C (55°F), from 40 years of daily records (1971–2025).
20°C
Average high
68°F
13°C
Average low
55°F
34°C
Record high
94°F · October 7, 1984
2°C
Record low
36°F · October 20, 1972
What October Is Like in Istanbul
- The October heat record, 34°C (94°F) on October 7, 1984, has stood for 41 years.
- The coldest October reading, 2°C (36°F) on October 20, 1972, has not been matched in 53 years.
- The warmest October in the record was 2023; the coldest was 1985.
At least 1 mm of rain falls on 57% of October days.
Warmest: 2023 (23.8°C)Latest: 2024 (22.1°C)10-year averageLong-run average (20.2°C)
Look Up a Day in October
See the weather in Istanbul on any October date, year by year.
Source: NOAA GHCN-Daily, Istanbul (1971–2007); Istanbul Bolge (Kartal) (2014–2025). Averages cover 1971–2025. How we compute this