Weather on September 20 in Sydney
Historical weather data for September 20 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
September 20th 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 20th was in 2023 (26°C average), while the coldest was 1982 (13°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 36% of September 20th dates historically, with the wettest September 20th recording 8.18" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Sydney? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 22°C (71°F) | 16°C (61°F) | -- |
| 2024 | 23°C (73°F) | 16°C (60°F) | -- |
| 2023 | 34°C (93°F) | 19°C (66°F) | -- |
| 2022 | 18°C (65°F) | 12°C (54°F) | -- |
| 2021 | 26°C (78°F) | 16°C (60°F) | -- |
| 2020 | 22°C (72°F) | 17°C (62°F) | -- |
| 2019 | 21°C (69°F) | 16°C (61°F) | 1 mm |
| 2018 | 18°C (65°F) | 12°C (53°F) | 14 mm |
| 2017 | 19°C (66°F) | 11°C (51°F) | 0 mm |
| 2016 | 21°C (69°F) | 10°C (50°F) | 0 mm |
| 2015 | 18°C (65°F) | 13°C (55°F) | 1 mm |
| 2014 | 21°C (69°F) | 9°C (48°F) | 0 mm |
| 2013 | 22°C (71°F) | 12°C (53°F) | 0 mm |
| 2012 | 21°C (69°F) | 12°C (54°F) | 1 mm |
| 2011 | 28°C (83°F) | 18°C (64°F) | 0 mm |
| 2010 | 20°C (68°F) | 11°C (52°F) | 0 mm |
| 2009 | 24°C (76°F) | 14°C (57°F) | 0 mm |
| 2008 | 33°C (91°F) | 19°C (66°F) | 0 mm |
| 2007 | 19°C (67°F) | 16°C (61°F) | 1 mm |
| 2006 | 30°C (86°F) | 20°C (68°F) | 0 mm |
| 2005 | 21°C (69°F) | 11°C (51°F) | 5 mm |
| 2004 | 19°C (67°F) | 12°C (53°F) | 13 mm |
| 2003 | 20°C (68°F) | 13°C (55°F) | 0 mm |
| 2002 | 20°C (68°F) | 11°C (51°F) | 0 mm |
| 2001 | 25°C (77°F) | 16°C (60°F) | 0 mm |
| 2000 | 25°C (77°F) | 14°C (58°F) | 0 mm |
| 1999 | 19°C (66°F) | 11°C (51°F) | 0 mm |
| 1998 | 19°C (66°F) | 17°C (63°F) | 7 mm |
| 1997 | 23°C (74°F) | 13°C (56°F) | 9 mm |
| 1996 | 18°C (64°F) | 17°C (63°F) | 2 mm |
| 1995 | 25°C (77°F) | 18°C (65°F) | 2 mm |
| 1994 | 19°C (67°F) | 9°C (48°F) | 0 mm |
| 1993 | 23°C (74°F) | 14°C (57°F) | 3 mm |
| 1992 | 18°C (65°F) | 8°C (46°F) | 1 mm |
| 1991 | 21°C (69°F) | 9°C (49°F) | 0 mm |
| 1990 | 24°C (76°F) | 13°C (55°F) | 0 mm |
| 1989 | 19°C (67°F) | 13°C (55°F) | 0 mm |
| 1988 | 18°C (65°F) | 9°C (49°F) | 19 mm |
| 1987 | 28°C (82°F) | 13°C (55°F) | 0 mm |
| 1986 | 19°C (66°F) | 9°C (48°F) | 0 mm |
| 1985 | 16°C (61°F) | 11°C (52°F) | 57 mm |
| 1984 | 20°C (68°F) | 12°C (53°F) | 6 mm |
| 1983 | 24°C (75°F) | 13°C (56°F) | 0 mm |
| 1982 | 17°C (62°F) | 11°C (51°F) | 208 mm |
| 1981 | 19°C (67°F) | 16°C (60°F) | 1 mm |
| 1980 | 21°C (69°F) | 12°C (54°F) | 0 mm |
| 1979 | 19°C (66°F) | 11°C (51°F) | 0 mm |
| 1978 | 18°C (65°F) | 10°C (50°F) | 15 mm |
| 1977 | 19°C (67°F) | 9°C (49°F) | 5 mm |
| 1976 | 22°C (72°F) | 13°C (55°F) | 0 mm |
| 1975 | 22°C (72°F) | 13°C (56°F) | 0 mm |
| 1974 | 19°C (66°F) | 13°C (56°F) | 0 mm |
| 1973 | 18°C (65°F) | 11°C (51°F) | 0 mm |
| 1972 | 21°C (69°F) | 11°C (51°F) | 0 mm |
| 1971 | 28°C (82°F) | 14°C (58°F) | 0 mm |