Weather on September 12 in Sydney
Historical weather data for September 12 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
September 12th in Sydney, Australia typically brings pleasant fall weather, with average highs around 21°C and lows near 12°C. Over 55 years of records, the warmest September 12th was in 2021 (22°C average), while the coldest was 1971 (11°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 29% of September 12th dates historically, with the wettest September 12th recording 1.48" of rain. The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
Planning for September 12th in Sydney? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 18°C (65°F) | 12°C (54°F) | -- |
| 2024 | 18°C (65°F) | 16°C (61°F) | -- |
| 2023 | 19°C (66°F) | 12°C (53°F) | -- |
| 2022 | 18°C (64°F) | 12°C (53°F) | -- |
| 2021 | 30°C (86°F) | 14°C (58°F) | -- |
| 2020 | 19°C (66°F) | 13°C (55°F) | -- |
| 2019 | 27°C (80°F) | 9°C (48°F) | 0 mm |
| 2018 | 26°C (78°F) | 16°C (60°F) | 0 mm |
| 2017 | 27°C (81°F) | 11°C (52°F) | 0 mm |
| 2016 | 21°C (70°F) | 12°C (54°F) | 0 mm |
| 2015 | 26°C (78°F) | 11°C (52°F) | 0 mm |
| 2014 | 18°C (65°F) | 14°C (57°F) | 1 mm |
| 2013 | 23°C (74°F) | 12°C (54°F) | 0 mm |
| 2012 | 21°C (70°F) | 11°C (52°F) | 0 mm |
| 2011 | 20°C (68°F) | 9°C (48°F) | 0 mm |
| 2010 | 19°C (66°F) | 9°C (49°F) | 0 mm |
| 2009 | 28°C (83°F) | 11°C (52°F) | 0 mm |
| 2008 | 24°C (76°F) | 9°C (48°F) | 0 mm |
| 2007 | 22°C (72°F) | 12°C (54°F) | 0 mm |
| 2006 | 18°C (65°F) | 11°C (52°F) | 38 mm |
| 2005 | 18°C (65°F) | 11°C (52°F) | 0 mm |
| 2004 | 17°C (63°F) | 9°C (48°F) | 0 mm |
| 2003 | 18°C (65°F) | 13°C (56°F) | 4 mm |
| 2002 | 21°C (69°F) | 9°C (48°F) | 10 mm |
| 2001 | 22°C (71°F) | 16°C (60°F) | 21 mm |
| 2000 | 19°C (67°F) | 11°C (52°F) | 0 mm |
| 1999 | 19°C (66°F) | 8°C (46°F) | 0 mm |
| 1998 | 22°C (71°F) | 16°C (60°F) | 7 mm |
| 1997 | 19°C (67°F) | 12°C (54°F) | 1 mm |
| 1996 | 23°C (73°F) | 13°C (55°F) | 2 mm |
| 1995 | 19°C (66°F) | 11°C (52°F) | 0 mm |
| 1994 | 28°C (82°F) | 11°C (51°F) | 0 mm |
| 1993 | 17°C (62°F) | 12°C (54°F) | 0 mm |
| 1992 | 17°C (63°F) | 12°C (54°F) | 1 mm |
| 1991 | 16°C (61°F) | 8°C (46°F) | 5 mm |
| 1990 | 22°C (71°F) | 11°C (51°F) | 0 mm |
| 1989 | 19°C (66°F) | 11°C (51°F) | 0 mm |
| 1988 | 23°C (73°F) | 14°C (57°F) | 0 mm |
| 1987 | 22°C (72°F) | 8°C (46°F) | 0 mm |
| 1986 | 19°C (67°F) | 12°C (54°F) | 9 mm |
| 1985 | 19°C (66°F) | 12°C (54°F) | 27 mm |
| 1984 | 17°C (63°F) | 8°C (46°F) | 1 mm |
| 1983 | 19°C (67°F) | 10°C (50°F) | 0 mm |
| 1982 | 17°C (63°F) | 8°C (46°F) | 0 mm |
| 1981 | 18°C (65°F) | 16°C (60°F) | 0 mm |
| 1980 | 21°C (70°F) | 13°C (56°F) | 2 mm |
| 1979 | 21°C (69°F) | 13°C (56°F) | 11 mm |
| 1978 | 28°C (82°F) | 13°C (55°F) | 0 mm |
| 1977 | 19°C (66°F) | 8°C (47°F) | 0 mm |
| 1976 | 20°C (68°F) | 10°C (50°F) | 0 mm |
| 1975 | 21°C (70°F) | 13°C (55°F) | 0 mm |
| 1974 | 24°C (76°F) | 12°C (53°F) | 0 mm |
| 1973 | 22°C (72°F) | 15°C (59°F) | 0 mm |
| 1972 | 28°C (82°F) | 14°C (57°F) | 0 mm |
| 1971 | 15°C (59°F) | 7°C (45°F) | 0 mm |