Weather on September 27 in Sydney
Historical weather data for September 27 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
September 27th in Sydney, Australia typically brings pleasant fall weather, with average highs around 21°C and lows near 13°C. Over 55 years of records, the warmest September 27th was in 2025 (24°C average), while the coldest was 1974 (11°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 38% of September 27th dates historically, with the wettest September 27th recording 2.14" of rain. The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for September 27th in Sydney? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 28°C (82°F) | 20°C (68°F) | -- |
| 2024 | 17°C (63°F) | 12°C (54°F) | -- |
| 2023 | 21°C (69°F) | 16°C (61°F) | -- |
| 2022 | 19°C (66°F) | 15°C (59°F) | -- |
| 2021 | 17°C (63°F) | 11°C (52°F) | -- |
| 2020 | 16°C (61°F) | 12°C (53°F) | -- |
| 2019 | 26°C (78°F) | 14°C (57°F) | 0 mm |
| 2018 | 20°C (68°F) | 8°C (47°F) | 3 mm |
| 2017 | 23°C (73°F) | 16°C (60°F) | 0 mm |
| 2016 | 23°C (74°F) | 11°C (52°F) | 0 mm |
| 2015 | 19°C (67°F) | 12°C (54°F) | 9 mm |
| 2014 | 23°C (73°F) | 13°C (55°F) | 1 mm |
| 2013 | 23°C (73°F) | 13°C (55°F) | 0 mm |
| 2012 | 23°C (73°F) | 14°C (57°F) | 1 mm |
| 2011 | 21°C (69°F) | 11°C (51°F) | 1 mm |
| 2010 | 27°C (81°F) | 13°C (55°F) | 0 mm |
| 2009 | 17°C (63°F) | 10°C (50°F) | 0 mm |
| 2008 | 26°C (78°F) | 14°C (57°F) | 0 mm |
| 2007 | 28°C (82°F) | 15°C (59°F) | 1 mm |
| 2006 | 23°C (74°F) | 17°C (63°F) | 0 mm |
| 2005 | 19°C (67°F) | 14°C (58°F) | 28 mm |
| 2004 | 29°C (84°F) | 13°C (56°F) | 0 mm |
| 2003 | 18°C (64°F) | 14°C (58°F) | 0 mm |
| 2002 | 23°C (73°F) | 13°C (55°F) | 0 mm |
| 2001 | 18°C (65°F) | 12°C (53°F) | 18 mm |
| 2000 | 28°C (83°F) | 15°C (59°F) | 36 mm |
| 1999 | 21°C (69°F) | 18°C (64°F) | 0 mm |
| 1998 | 23°C (74°F) | 12°C (54°F) | 0 mm |
| 1997 | 24°C (75°F) | 12°C (54°F) | 5 mm |
| 1996 | 19°C (67°F) | 13°C (56°F) | 0 mm |
| 1995 | 17°C (62°F) | 11°C (51°F) | 5 mm |
| 1994 | 16°C (60°F) | 10°C (50°F) | 0 mm |
| 1993 | 19°C (67°F) | 9°C (48°F) | 0 mm |
| 1992 | 19°C (66°F) | 11°C (52°F) | 0 mm |
| 1991 | 20°C (68°F) | 12°C (53°F) | 8 mm |
| 1990 | 18°C (64°F) | 13°C (55°F) | 6 mm |
| 1989 | 19°C (66°F) | 8°C (47°F) | 1 mm |
| 1988 | 20°C (68°F) | 14°C (57°F) | 54 mm |
| 1987 | 31°C (88°F) | 15°C (59°F) | 0 mm |
| 1986 | 23°C (73°F) | 16°C (60°F) | 0 mm |
| 1985 | 19°C (66°F) | 9°C (48°F) | 0 mm |
| 1984 | 20°C (68°F) | 8°C (47°F) | 0 mm |
| 1983 | 23°C (74°F) | 10°C (50°F) | 0 mm |
| 1982 | 18°C (65°F) | 15°C (59°F) | 3 mm |
| 1981 | 18°C (64°F) | 13°C (55°F) | 3 mm |
| 1980 | 19°C (67°F) | 13°C (55°F) | 0 mm |
| 1979 | 21°C (70°F) | 13°C (56°F) | 0 mm |
| 1978 | 26°C (79°F) | 17°C (62°F) | 0 mm |
| 1977 | 20°C (68°F) | 14°C (58°F) | 1 mm |
| 1976 | 19°C (66°F) | 9°C (48°F) | 20 mm |
| 1975 | 19°C (67°F) | 12°C (54°F) | 9 mm |
| 1974 | 16°C (60°F) | 7°C (44°F) | 11 mm |
| 1973 | 26°C (78°F) | 13°C (56°F) | 0 mm |
| 1972 | 23°C (73°F) | 17°C (63°F) | 0 mm |
| 1971 | 22°C (71°F) | 14°C (57°F) | 0 mm |