Weather on September 18 in Istanbul
Historical weather data for September 18 in Istanbul, Turkey
Based on 55 years of data from ISTANBUL
About This Date
September 18th in Istanbul, Turkey typically brings pleasant fall weather, with average highs around 26°C and lows near 16°C. Over 55 years of records, the warmest September 18th was in 2016 (26°C average), while the coldest was 1979 (16°C) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 7% of September 18th dates historically, with the wettest September 18th recording 4.09" of rain. The last decade has been 6.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.0°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Istanbul? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 23°C (74°F) | 16°C (60°F) | -- |
| 2024 | 28°C (82°F) | 18°C (65°F) | 0" |
| 2023 | 27°C (80°F) | 19°C (67°F) | -- |
| 2022 | 29°C (85°F) | -- | -- |
| 2021 | 30°C (86°F) | 19°C (67°F) | -- |
| 2020 | -- | 21°C (69°F) | -- |
| 2019 | -- | 17°C (63°F) | -- |
| 2018 | 26°C (78°F) | -- | -- |
| 2017 | 31°C (88°F) | 21°C (69°F) | -- |
| 2016 | 33°C (92°F) | 19°C (67°F) | 0" |
| 2015 | 28°C (83°F) | 20°C (68°F) | 0" |
| 2014 | 22°C (72°F) | -- | 0" |
| 2013 | 23°C (74°F) | -- | 0" |
| 2012 | 28°C (83°F) | 20°C (68°F) | 1.3" |
| 2011 | 32°C (89°F) | 19°C (67°F) | 0" |
| 2010 | 30°C (86°F) | 14°C (58°F) | 0" |
| 2009 | 27°C (80°F) | 16°C (61°F) | 0" |
| 2008 | 20°C (68°F) | -- | 4.09" |
| 2007 | 29°C (84°F) | 10°C (50°F) | 0" |
| 2006 | 26°C (79°F) | 14°C (58°F) | 0" |
| 2005 | -- | 16°C (61°F) | 0" |
| 2004 | 27°C (81°F) | -- | -- |
| 2003 | 24°C (75°F) | 14°C (57°F) | 0" |
| 2002 | 22°C (72°F) | 13°C (56°F) | -- |
| 2001 | 29°C (84°F) | 18°C (65°F) | -- |
| 2000 | 29°C (85°F) | 17°C (63°F) | -- |
| 1999 | 24°C (75°F) | 17°C (63°F) | -- |
| 1998 | 26°C (79°F) | 16°C (60°F) | -- |
| 1997 | 21°C (69°F) | 17°C (63°F) | -- |
| 1996 | 24°C (75°F) | 14°C (58°F) | -- |
| 1995 | 25°C (77°F) | 17°C (62°F) | -- |
| 1994 | 30°C (86°F) | 20°C (68°F) | -- |
| 1993 | 29°C (85°F) | 20°C (68°F) | -- |
| 1992 | 27°C (80°F) | 15°C (59°F) | -- |
| 1991 | 22°C (72°F) | 14°C (58°F) | 0" |
| 1990 | 23°C (73°F) | 12°C (54°F) | -- |
| 1989 | 22°C (72°F) | 13°C (55°F) | -- |
| 1988 | 28°C (83°F) | 18°C (64°F) | -- |
| 1987 | 25°C (77°F) | 16°C (61°F) | -- |
| 1986 | 28°C (82°F) | 18°C (64°F) | -- |
| 1985 | 26°C (78°F) | 13°C (56°F) | -- |
| 1984 | 30°C (86°F) | 18°C (64°F) | -- |
| 1983 | 33°C (92°F) | 15°C (59°F) | -- |
| 1982 | 26°C (79°F) | 17°C (62°F) | -- |
| 1981 | 21°C (70°F) | 14°C (58°F) | -- |
| 1980 | 23°C (74°F) | 11°C (51°F) | -- |
| 1979 | 21°C (70°F) | 9°C (49°F) | 0.1" |
| 1978 | 22°C (72°F) | 12°C (53°F) | 0.3" |
| 1977 | 27°C (80°F) | 16°C (60°F) | -- |
| 1976 | 24°C (76°F) | 15°C (59°F) | -- |
| 1975 | 26°C (79°F) | 19°C (66°F) | -- |
| 1974 | 23°C (73°F) | 11°C (51°F) | -- |
| 1973 | 24°C (76°F) | 13°C (56°F) | -- |
| 1972 | 31°C (88°F) | 19°C (66°F) | -- |
| 1971 | 27°C (81°F) | 18°C (65°F) | -- |