Istanbul Weather in April
In April, Istanbul averages a high of 17°C (63°F) and a low of 9°C (47°F), from 42 years of daily records (1971–2025).
17°C
Average high
63°F
9°C
Average low
47°F
33°C
Record high
91°F · April 13, 1994
1°C
Record low
33°F · April 1, 1981
What April Is Like in Istanbul
- April in Istanbul has become 2.0°C (3.6°F) warmer on average: the 2011–2025 average against 1970–1989.
- The coldest April reading, 1°C (33°F) on April 1, 1981, has not been matched in 44 years.
- The April heat record, 33°C (91°F) on April 13, 1994, has stood for 31 years.
- The warmest April in the record was 2024; the coldest was 1997.
At least 1 mm of rain falls on 55% of April days.
Warmest: 2024 (22.7°C)Latest: 2025 (16.7°C)10-year averageLong-run average (17.1°C)
Look Up a Day in April
See the weather in Istanbul on any April date, year by year.
Source: NOAA GHCN-Daily, Istanbul (1971–2007); Istanbul Bolge (Kartal) (2014–2025). Averages cover 1971–2025. How we compute this