Weather on October 21 in Sydney
Historical weather data for October 21 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
October 21st in Sydney, Australia typically brings pleasant fall weather, with average highs around 22°C and lows near 14°C. Over 55 years of records, the warmest October 21st was in 1991 (25°C average), while the coldest was 1992 (12°C) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 38% of October 21st dates historically, with the wettest October 21st recording 6.02" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Sydney? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 21°C (70°F) | 18°C (65°F) | -- |
| 2024 | 19°C (66°F) | 16°C (60°F) | -- |
| 2023 | 21°C (70°F) | 18°C (64°F) | -- |
| 2022 | 21°C (69°F) | 19°C (66°F) | -- |
| 2021 | 21°C (69°F) | 14°C (58°F) | -- |
| 2020 | 19°C (67°F) | 16°C (61°F) | -- |
| 2019 | 23°C (73°F) | 12°C (53°F) | 0 mm |
| 2018 | 21°C (70°F) | 16°C (60°F) | 32 mm |
| 2017 | 20°C (68°F) | 13°C (55°F) | 42 mm |
| 2016 | 25°C (77°F) | 16°C (60°F) | 0 mm |
| 2015 | 28°C (82°F) | 19°C (67°F) | 3 mm |
| 2014 | 19°C (66°F) | 15°C (59°F) | 1 mm |
| 2013 | 29°C (84°F) | 17°C (62°F) | 0 mm |
| 2012 | 27°C (81°F) | 15°C (59°F) | 0 mm |
| 2011 | 30°C (86°F) | 16°C (61°F) | 1 mm |
| 2010 | 22°C (71°F) | 13°C (56°F) | 0 mm |
| 2009 | 34°C (94°F) | 16°C (60°F) | 0 mm |
| 2008 | 19°C (67°F) | 14°C (58°F) | 5 mm |
| 2007 | 26°C (78°F) | 17°C (62°F) | 0 mm |
| 2006 | 16°C (61°F) | 16°C (60°F) | 13 mm |
| 2005 | 22°C (72°F) | 17°C (63°F) | 21 mm |
| 2004 | 21°C (69°F) | 16°C (60°F) | 153 mm |
| 2003 | 27°C (81°F) | 13°C (56°F) | 0 mm |
| 2002 | 21°C (69°F) | 17°C (62°F) | 0 mm |
| 2001 | 22°C (71°F) | 12°C (54°F) | 0 mm |
| 2000 | 22°C (71°F) | 16°C (61°F) | 0 mm |
| 1999 | 23°C (73°F) | 11°C (52°F) | 0 mm |
| 1998 | 22°C (72°F) | 12°C (53°F) | 0 mm |
| 1997 | 19°C (66°F) | 11°C (51°F) | 4 mm |
| 1996 | 18°C (65°F) | 9°C (49°F) | 1 mm |
| 1995 | 19°C (67°F) | 12°C (54°F) | 25 mm |
| 1994 | 17°C (63°F) | 11°C (52°F) | 30 mm |
| 1993 | 20°C (68°F) | 13°C (55°F) | 0 mm |
| 1992 | 15°C (59°F) | 8°C (47°F) | 6 mm |
| 1991 | 32°C (89°F) | 18°C (65°F) | 0 mm |
| 1990 | 23°C (73°F) | 12°C (54°F) | 0 mm |
| 1989 | 22°C (71°F) | 13°C (55°F) | 0 mm |
| 1988 | 26°C (79°F) | 17°C (62°F) | 0 mm |
| 1987 | 20°C (68°F) | 14°C (58°F) | 142 mm |
| 1986 | 21°C (69°F) | 11°C (52°F) | 0 mm |
| 1985 | 19°C (67°F) | 11°C (52°F) | 0 mm |
| 1984 | 19°C (66°F) | 14°C (58°F) | 12 mm |
| 1983 | 22°C (72°F) | 13°C (55°F) | 0 mm |
| 1982 | 23°C (73°F) | 13°C (55°F) | 0 mm |
| 1981 | 19°C (67°F) | 14°C (58°F) | 11 mm |
| 1980 | 21°C (70°F) | 17°C (62°F) | 14 mm |
| 1979 | 23°C (73°F) | 17°C (63°F) | 0 mm |
| 1978 | 21°C (69°F) | 12°C (53°F) | 0 mm |
| 1977 | 23°C (74°F) | 13°C (55°F) | 0 mm |
| 1976 | 22°C (72°F) | 13°C (55°F) | 6 mm |
| 1975 | 26°C (79°F) | 17°C (62°F) | 38 mm |
| 1974 | 19°C (67°F) | 13°C (55°F) | 0 mm |
| 1973 | 22°C (71°F) | 16°C (61°F) | 1 mm |
| 1972 | 19°C (67°F) | 16°C (60°F) | 0 mm |
| 1971 | 19°C (67°F) | 14°C (58°F) | 0 mm |