Weather on September 15 in Sydney
Historical weather data for September 15 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
September 15th 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 15th was in 2015 (23°C average), while the coldest was 2024 (12°C) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 15th dates historically, with the wettest September 15th recording 8.98" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 15th in Sydney? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 27°C (81°F) | 13°C (56°F) | -- |
| 2024 | 15°C (59°F) | 9°C (49°F) | -- |
| 2023 | 21°C (70°F) | 13°C (56°F) | -- |
| 2022 | 18°C (65°F) | 12°C (54°F) | -- |
| 2021 | 16°C (60°F) | 11°C (51°F) | -- |
| 2020 | 19°C (66°F) | 16°C (61°F) | -- |
| 2019 | 28°C (82°F) | 9°C (49°F) | 0" |
| 2018 | 32°C (89°F) | 13°C (55°F) | 0" |
| 2017 | 23°C (73°F) | 11°C (51°F) | 0" |
| 2016 | 22°C (72°F) | 14°C (57°F) | 0" |
| 2015 | 30°C (86°F) | 16°C (60°F) | 0" |
| 2014 | 20°C (68°F) | 13°C (56°F) | 0" |
| 2013 | 19°C (66°F) | 13°C (55°F) | 0" |
| 2012 | 20°C (68°F) | 9°C (49°F) | 0" |
| 2011 | 19°C (67°F) | 15°C (59°F) | 0" |
| 2010 | 21°C (69°F) | -- | 2.1" |
| 2009 | 21°C (69°F) | 16°C (60°F) | 0" |
| 2008 | 28°C (82°F) | 17°C (62°F) | 0.4" |
| 2007 | 21°C (70°F) | 13°C (56°F) | 0.12" |
| 2006 | 23°C (73°F) | 12°C (54°F) | 0" |
| 2005 | 25°C (77°F) | 13°C (55°F) | 0" |
| 2004 | 21°C (69°F) | 12°C (54°F) | 0" |
| 2003 | 19°C (66°F) | 10°C (50°F) | 0" |
| 2002 | 22°C (71°F) | 11°C (51°F) | 0" |
| 2001 | 23°C (74°F) | 11°C (52°F) | 0" |
| 2000 | 19°C (67°F) | 13°C (55°F) | 0" |
| 1999 | 23°C (74°F) | 10°C (50°F) | 0" |
| 1998 | 21°C (69°F) | 13°C (55°F) | 0" |
| 1997 | 27°C (81°F) | 14°C (58°F) | 0.04" |
| 1996 | 24°C (76°F) | 12°C (54°F) | 0" |
| 1995 | 20°C (68°F) | 15°C (59°F) | 0" |
| 1994 | 21°C (69°F) | 11°C (51°F) | 0" |
| 1993 | 18°C (65°F) | 11°C (51°F) | 0.78" |
| 1992 | 23°C (73°F) | 11°C (52°F) | 0" |
| 1991 | 27°C (80°F) | 12°C (54°F) | 0" |
| 1990 | 14°C (58°F) | 11°C (51°F) | 8.98" |
| 1989 | 19°C (67°F) | 8°C (47°F) | 0" |
| 1988 | 18°C (64°F) | 12°C (53°F) | 0" |
| 1987 | 19°C (67°F) | 11°C (52°F) | 0" |
| 1986 | 16°C (60°F) | 11°C (51°F) | 0.62" |
| 1985 | 21°C (69°F) | 13°C (55°F) | 0.42" |
| 1984 | 19°C (66°F) | 9°C (49°F) | 0" |
| 1983 | 16°C (60°F) | 11°C (52°F) | 1.76" |
| 1982 | 18°C (64°F) | 11°C (51°F) | 0" |
| 1981 | 28°C (83°F) | 12°C (54°F) | 0" |
| 1980 | 25°C (77°F) | 14°C (58°F) | 0" |
| 1979 | 18°C (64°F) | 8°C (46°F) | 0" |
| 1978 | 19°C (66°F) | 9°C (49°F) | 0" |
| 1977 | 17°C (62°F) | 9°C (48°F) | 0.36" |
| 1976 | 18°C (65°F) | 9°C (48°F) | 0.38" |
| 1975 | 18°C (65°F) | 16°C (60°F) | 0.12" |
| 1974 | 18°C (64°F) | 9°C (48°F) | 0" |
| 1973 | 16°C (60°F) | 11°C (52°F) | 0.15" |
| 1972 | 24°C (76°F) | 9°C (48°F) | 0" |
| 1971 | 21°C (69°F) | 14°C (57°F) | 0.25" |