Weather on October 21 in Istanbul
Historical weather data for October 21 in Istanbul, Turkey
Avg High20°C (68°F)
Avg Low11°C (52°F)
Warmest199124°C
Coldest197611°C
Based on 55 years of data from ISTANBUL
About This Date
October 21st in Istanbul, Turkey typically brings mild fall weather, with average highs around 20°C and lows near 11°C. Over 55 years of records, the warmest October 21st was in 1991 (24°C average), while the coldest was 1976 (11°C) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 22% of October 21st dates historically, with the wettest October 21st recording 2.36" of rain. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Istanbul? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 21°C (69°F) | 7°C (44°F) | 0 mm |
| 2024 | 19°C (66°F) | 11°C (51°F) | 0 mm |
| 2023 | 26°C (78°F) | -- | 0 mm |
| 2022 | 18°C (64°F) | -- | -- |
| 2021 | 18°C (64°F) | 9°C (49°F) | 0 mm |
| 2020 | -- | 16°C (61°F) | 60 mm |
| 2019 | -- | 16°C (60°F) | -- |
| 2018 | 19°C (66°F) | 14°C (58°F) | 30 mm |
| 2017 | 22°C (71°F) | 13°C (55°F) | -- |
| 2016 | 22°C (71°F) | 12°C (53°F) | 0 mm |
| 2015 | 19°C (66°F) | -- | 0 mm |
| 2014 | 22°C (71°F) | 9°C (48°F) | 0 mm |
| 2013 | -- | 3°C (38°F) | 0 mm |
| 2012 | 23°C (74°F) | 11°C (52°F) | 10 mm |
| 2011 | 22°C (71°F) | 3°C (37°F) | 0 mm |
| 2010 | 24°C (76°F) | -- | 3 mm |
| 2009 | 21°C (69°F) | -- | 0 mm |
| 2008 | 21°C (69°F) | 12°C (53°F) | 0 mm |
| 2007 | 18°C (64°F) | -- | 18 mm |
| 2006 | 23°C (73°F) | 8°C (47°F) | 1 mm |
| 2005 | 18°C (64°F) | 3°C (38°F) | 0 mm |
| 2004 | 24°C (76°F) | 11°C (52°F) | -- |
| 2003 | 24°C (75°F) | 17°C (62°F) | 10 mm |
| 2002 | 18°C (65°F) | 10°C (50°F) | 3 mm |
| 2001 | 20°C (68°F) | 10°C (50°F) | -- |
| 2000 | 16°C (60°F) | 10°C (50°F) | 23 mm |
| 1999 | 17°C (63°F) | 14°C (57°F) | -- |
| 1998 | 20°C (68°F) | 13°C (55°F) | -- |
| 1997 | 14°C (58°F) | 10°C (50°F) | 3 mm |
| 1996 | 18°C (64°F) | 13°C (56°F) | -- |
| 1995 | 18°C (65°F) | 11°C (51°F) | 0 mm |
| 1994 | 17°C (63°F) | 14°C (58°F) | 18 mm |
| 1993 | 20°C (68°F) | 14°C (57°F) | -- |
| 1992 | 21°C (69°F) | 11°C (51°F) | -- |
| 1991 | 31°C (87°F) | 17°C (62°F) | -- |
| 1990 | 24°C (75°F) | 12°C (54°F) | -- |
| 1989 | 16°C (61°F) | 10°C (50°F) | -- |
| 1988 | 14°C (58°F) | 12°C (53°F) | 0 mm |
| 1987 | 16°C (61°F) | 13°C (56°F) | -- |
| 1986 | 19°C (67°F) | 16°C (60°F) | 10 mm |
| 1985 | 18°C (64°F) | 6°C (42°F) | -- |
| 1984 | 22°C (71°F) | 11°C (51°F) | -- |
| 1983 | 18°C (64°F) | 13°C (55°F) | -- |
| 1982 | 17°C (62°F) | 8°C (47°F) | -- |
| 1981 | 24°C (75°F) | 12°C (54°F) | -- |
| 1980 | 21°C (70°F) | 17°C (63°F) | -- |
| 1979 | 16°C (60°F) | 13°C (55°F) | 0 mm |
| 1978 | 20°C (68°F) | 13°C (55°F) | -- |
| 1977 | 16°C (60°F) | 9°C (49°F) | -- |
| 1976 | 12°C (54°F) | 9°C (49°F) | 0 mm |
| 1975 | 19°C (67°F) | 13°C (56°F) | -- |
| 1974 | 28°C (82°F) | 14°C (57°F) | -- |
| 1973 | 23°C (73°F) | 13°C (56°F) | -- |
| 1972 | 17°C (62°F) | 6°C (42°F) | -- |
| 1971 | 19°C (67°F) | 9°C (49°F) | -- |