Weather on December 15 in Sydney
Historical weather data for December 15 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
December 15th in Sydney, Australia typically brings pleasant winter weather, with average highs around 26°C and lows near 18°C. Over 55 years of records, the warmest December 15th was in 1972 (29°C average), while the coldest was 1971 (16°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 31% of December 15th dates historically, with the wettest December 15th recording 1.75" 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 December 15th in Sydney? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 22°C (72°F) | 20°C (68°F) | -- |
| 2024 | 26°C (78°F) | 22°C (71°F) | -- |
| 2023 | 24°C (75°F) | 22°C (71°F) | -- |
| 2022 | 20°C (68°F) | 15°C (59°F) | -- |
| 2021 | 25°C (77°F) | 18°C (64°F) | -- |
| 2020 | 23°C (73°F) | 19°C (66°F) | -- |
| 2019 | 27°C (80°F) | 21°C (69°F) | 0" |
| 2018 | 28°C (82°F) | 22°C (71°F) | 1.42" |
| 2017 | 27°C (80°F) | 21°C (69°F) | 0.02" |
| 2016 | 19°C (66°F) | 17°C (63°F) | 0.82" |
| 2015 | 27°C (80°F) | 21°C (69°F) | 0" |
| 2014 | 26°C (79°F) | 18°C (64°F) | 0" |
| 2013 | 24°C (76°F) | 19°C (66°F) | 0.12" |
| 2012 | 27°C (81°F) | 21°C (69°F) | 0" |
| 2011 | 23°C (73°F) | 16°C (60°F) | 0.02" |
| 2010 | 26°C (78°F) | 20°C (68°F) | 0" |
| 2009 | 24°C (76°F) | 19°C (66°F) | 0" |
| 2008 | 24°C (75°F) | 17°C (62°F) | 0" |
| 2007 | 27°C (80°F) | 16°C (61°F) | 0" |
| 2006 | 19°C (67°F) | 19°C (66°F) | 0.04" |
| 2005 | 26°C (79°F) | 19°C (66°F) | 0" |
| 2004 | 24°C (75°F) | 19°C (66°F) | 0" |
| 2003 | 26°C (79°F) | 18°C (64°F) | 0" |
| 2002 | 27°C (81°F) | 21°C (69°F) | 0" |
| 2001 | 21°C (70°F) | 19°C (66°F) | 1.36" |
| 2000 | 25°C (77°F) | 20°C (68°F) | 0" |
| 1999 | 24°C (76°F) | 16°C (61°F) | 0" |
| 1998 | 21°C (70°F) | 18°C (65°F) | 1.04" |
| 1997 | 27°C (80°F) | 19°C (67°F) | 0" |
| 1996 | 23°C (74°F) | 13°C (56°F) | 0" |
| 1995 | 24°C (75°F) | 18°C (64°F) | 0" |
| 1994 | 22°C (71°F) | 18°C (64°F) | 0" |
| 1993 | 32°C (90°F) | 22°C (72°F) | 0" |
| 1992 | 23°C (74°F) | 18°C (64°F) | 0.04" |
| 1991 | 32°C (90°F) | 18°C (64°F) | 0.46" |
| 1990 | 28°C (82°F) | 19°C (66°F) | 0" |
| 1989 | 22°C (71°F) | 14°C (57°F) | 0.52" |
| 1988 | 22°C (72°F) | 19°C (67°F) | 0.04" |
| 1987 | 26°C (78°F) | 17°C (63°F) | 0" |
| 1986 | 22°C (72°F) | 16°C (61°F) | 0.16" |
| 1985 | 26°C (78°F) | 19°C (66°F) | 0" |
| 1984 | 31°C (87°F) | 19°C (67°F) | 0.44" |
| 1983 | 26°C (79°F) | 19°C (67°F) | 0" |
| 1982 | 29°C (85°F) | 20°C (68°F) | 0" |
| 1981 | 22°C (71°F) | 14°C (58°F) | 0.04" |
| 1980 | 28°C (83°F) | 18°C (65°F) | 0" |
| 1979 | 27°C (80°F) | 21°C (69°F) | 0" |
| 1978 | 21°C (70°F) | 14°C (58°F) | 1.32" |
| 1977 | 32°C (89°F) | 22°C (71°F) | 0" |
| 1976 | 31°C (88°F) | 20°C (68°F) | 0" |
| 1975 | 29°C (85°F) | 21°C (69°F) | 0" |
| 1974 | 24°C (76°F) | 18°C (65°F) | 0" |
| 1973 | 26°C (79°F) | 21°C (70°F) | 0" |
| 1972 | 37°C (99°F) | 21°C (69°F) | 0" |
| 1971 | 18°C (64°F) | 14°C (58°F) | 1.75" |