Weather on September 23 in Sydney
Historical weather data for September 23 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
September 23rd in Sydney, Australia typically brings pleasant fall weather, with average highs around 22°C and lows near 13°C. Over 55 years of records, the warmest September 23rd was in 2003 (24°C average), while the coldest was 1997 (12°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 18% of September 23rd dates historically, with the wettest September 23rd recording 2" of rain. The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
Planning for September 23rd in Sydney? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 17°C (62°F) | 9°C (49°F) | -- |
| 2024 | 25°C (77°F) | 16°C (60°F) | -- |
| 2023 | 19°C (66°F) | 12°C (54°F) | -- |
| 2022 | 18°C (65°F) | 15°C (59°F) | -- |
| 2021 | 22°C (71°F) | 12°C (53°F) | -- |
| 2020 | 22°C (72°F) | 15°C (59°F) | -- |
| 2019 | 22°C (72°F) | 12°C (54°F) | 0 mm |
| 2018 | 21°C (70°F) | 14°C (57°F) | 0 mm |
| 2017 | 32°C (90°F) | 16°C (60°F) | 0 mm |
| 2016 | 22°C (72°F) | 15°C (59°F) | 2 mm |
| 2015 | 16°C (61°F) | 10°C (50°F) | 1 mm |
| 2014 | 21°C (70°F) | 11°C (52°F) | 0 mm |
| 2013 | 24°C (76°F) | 13°C (55°F) | 0 mm |
| 2012 | 24°C (75°F) | 11°C (52°F) | 0 mm |
| 2011 | 33°C (91°F) | 13°C (55°F) | 0 mm |
| 2010 | 19°C (66°F) | 15°C (59°F) | 1 mm |
| 2009 | 22°C (71°F) | 17°C (63°F) | 11 mm |
| 2008 | 17°C (63°F) | 16°C (60°F) | 7 mm |
| 2007 | 18°C (65°F) | 9°C (48°F) | 0 mm |
| 2006 | 27°C (80°F) | 19°C (66°F) | 0 mm |
| 2005 | 28°C (82°F) | 14°C (57°F) | 0 mm |
| 2004 | 24°C (75°F) | 18°C (64°F) | 0 mm |
| 2003 | 29°C (84°F) | 21°C (69°F) | 0 mm |
| 2002 | 21°C (70°F) | 14°C (57°F) | 0 mm |
| 2001 | 23°C (73°F) | 14°C (58°F) | 0 mm |
| 2000 | 23°C (74°F) | 14°C (58°F) | 0 mm |
| 1999 | 28°C (82°F) | 13°C (56°F) | 23 mm |
| 1998 | 27°C (80°F) | 16°C (61°F) | 0 mm |
| 1997 | 14°C (58°F) | 9°C (49°F) | 0 mm |
| 1996 | 24°C (75°F) | 9°C (49°F) | 0 mm |
| 1995 | 26°C (78°F) | 11°C (52°F) | 0 mm |
| 1994 | 28°C (83°F) | 13°C (56°F) | 0 mm |
| 1993 | 19°C (66°F) | 9°C (48°F) | 0 mm |
| 1992 | 22°C (72°F) | 12°C (53°F) | 0 mm |
| 1991 | 20°C (68°F) | 9°C (49°F) | 0 mm |
| 1990 | 21°C (69°F) | 14°C (58°F) | 0 mm |
| 1989 | 22°C (72°F) | 16°C (60°F) | 0 mm |
| 1988 | 27°C (80°F) | 13°C (55°F) | 0 mm |
| 1987 | 20°C (68°F) | 14°C (58°F) | 0 mm |
| 1986 | 19°C (66°F) | 13°C (56°F) | 1 mm |
| 1985 | 22°C (71°F) | 11°C (51°F) | 0 mm |
| 1984 | 19°C (66°F) | 9°C (48°F) | 0 mm |
| 1983 | 31°C (88°F) | 13°C (56°F) | 0 mm |
| 1982 | 17°C (62°F) | 9°C (48°F) | 51 mm |
| 1981 | 26°C (79°F) | 13°C (55°F) | 0 mm |
| 1980 | 26°C (78°F) | 13°C (56°F) | 0 mm |
| 1979 | 18°C (65°F) | 14°C (58°F) | 0 mm |
| 1978 | 18°C (65°F) | 12°C (54°F) | 15 mm |
| 1977 | 20°C (68°F) | 16°C (61°F) | 0 mm |
| 1976 | 22°C (71°F) | 11°C (51°F) | 0 mm |
| 1975 | 20°C (68°F) | 16°C (60°F) | 1 mm |
| 1974 | 21°C (70°F) | 9°C (49°F) | 0 mm |
| 1973 | 17°C (63°F) | 13°C (56°F) | 0 mm |
| 1972 | 21°C (69°F) | 13°C (56°F) | 0 mm |
| 1971 | 26°C (78°F) | 13°C (55°F) | 0 mm |