Weather on September 11 in Istanbul
Historical weather data for September 11 in Istanbul, Turkey
Based on 55 years of data from ISTANBUL
About This Date
September 11th in Istanbul, Turkey typically brings warm fall weather, with average highs around 27°C and lows near 17°C. Over 55 years of records, the warmest September 11th was in 2015 (28°C average), while the coldest was 1975 (18°C) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 9% of September 11th dates historically, with the wettest September 11th recording 0.9" of rain. The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
Planning for September 11th in Istanbul? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 28°C (83°F) | 18°C (64°F) | 0" |
| 2024 | 29°C (85°F) | 22°C (71°F) | 0" |
| 2023 | -- | 18°C (65°F) | -- |
| 2022 | 30°C (86°F) | 22°C (72°F) | 0" |
| 2021 | 24°C (76°F) | 16°C (61°F) | 0.05" |
| 2020 | -- | 21°C (70°F) | -- |
| 2019 | -- | 21°C (69°F) | -- |
| 2018 | -- | 14°C (57°F) | -- |
| 2017 | -- | 20°C (68°F) | -- |
| 2016 | 28°C (83°F) | 22°C (71°F) | 0" |
| 2015 | 32°C (90°F) | 23°C (73°F) | 0" |
| 2014 | 29°C (85°F) | 19°C (67°F) | 0" |
| 2013 | -- | 13°C (55°F) | 0" |
| 2012 | 28°C (83°F) | 15°C (59°F) | 0" |
| 2011 | 29°C (84°F) | 16°C (61°F) | 0" |
| 2010 | 29°C (85°F) | 16°C (61°F) | 0" |
| 2009 | -- | 17°C (63°F) | 0" |
| 2008 | 30°C (86°F) | 16°C (60°F) | 0" |
| 2007 | 29°C (85°F) | 12°C (53°F) | 0" |
| 2006 | 27°C (80°F) | 19°C (66°F) | 0" |
| 2005 | 29°C (84°F) | 12°C (54°F) | 0" |
| 2004 | 22°C (71°F) | -- | 0" |
| 2003 | 25°C (77°F) | 18°C (65°F) | -- |
| 2002 | 25°C (77°F) | 18°C (64°F) | -- |
| 2001 | 30°C (86°F) | 23°C (73°F) | -- |
| 2000 | 27°C (80°F) | 18°C (64°F) | -- |
| 1999 | 25°C (77°F) | 18°C (65°F) | 0" |
| 1998 | 26°C (79°F) | 19°C (67°F) | -- |
| 1997 | 21°C (70°F) | 15°C (59°F) | -- |
| 1996 | 23°C (74°F) | 15°C (59°F) | -- |
| 1995 | 24°C (76°F) | 18°C (64°F) | 0" |
| 1994 | 31°C (87°F) | 21°C (69°F) | -- |
| 1993 | 28°C (83°F) | 16°C (60°F) | -- |
| 1992 | 25°C (77°F) | 19°C (66°F) | -- |
| 1991 | 22°C (72°F) | 17°C (63°F) | -- |
| 1990 | 27°C (80°F) | 15°C (59°F) | -- |
| 1989 | 27°C (80°F) | 20°C (68°F) | 0" |
| 1988 | 22°C (72°F) | 14°C (57°F) | -- |
| 1987 | 25°C (77°F) | 17°C (63°F) | -- |
| 1986 | 28°C (83°F) | 17°C (63°F) | -- |
| 1985 | 22°C (72°F) | 13°C (56°F) | 0.8" |
| 1984 | 28°C (83°F) | 17°C (62°F) | -- |
| 1983 | 27°C (81°F) | 13°C (55°F) | -- |
| 1982 | 31°C (88°F) | 21°C (70°F) | -- |
| 1981 | 23°C (73°F) | 14°C (58°F) | 0.6" |
| 1980 | 24°C (76°F) | 14°C (58°F) | -- |
| 1979 | 24°C (76°F) | 14°C (58°F) | -- |
| 1978 | 23°C (74°F) | 17°C (62°F) | 0.7" |
| 1977 | 21°C (70°F) | 17°C (62°F) | 0.9" |
| 1976 | 25°C (77°F) | 15°C (59°F) | -- |
| 1975 | 24°C (75°F) | 12°C (53°F) | -- |
| 1974 | 27°C (80°F) | 18°C (64°F) | -- |
| 1973 | 27°C (81°F) | 15°C (59°F) | -- |
| 1972 | 26°C (78°F) | 16°C (60°F) | -- |
| 1971 | 29°C (84°F) | 15°C (59°F) | -- |