Weather on December 20 in Sydney
Historical weather data for December 20 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
December 20th 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 20th was in 2017 (32°C average), while the coldest was 2022 (17°C) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 29% of December 20th dates historically, with the wettest December 20th recording 1.86" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Sydney? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 27°C (81°F) | 23°C (74°F) | -- |
| 2024 | 22°C (72°F) | 18°C (65°F) | -- |
| 2023 | 19°C (67°F) | 19°C (66°F) | -- |
| 2022 | 19°C (67°F) | 14°C (58°F) | -- |
| 2021 | 26°C (79°F) | 21°C (70°F) | -- |
| 2020 | 23°C (73°F) | 18°C (65°F) | -- |
| 2019 | 26°C (79°F) | 19°C (67°F) | 0" |
| 2018 | 28°C (82°F) | 20°C (68°F) | 1.38" |
| 2017 | 38°C (101°F) | 25°C (77°F) | 0" |
| 2016 | 27°C (81°F) | 17°C (62°F) | 0" |
| 2015 | 31°C (87°F) | 20°C (68°F) | 0" |
| 2014 | 23°C (74°F) | 18°C (64°F) | 0" |
| 2013 | 33°C (92°F) | 21°C (69°F) | 0" |
| 2012 | 33°C (91°F) | 22°C (72°F) | 0" |
| 2011 | 24°C (76°F) | 18°C (65°F) | 1.48" |
| 2010 | 22°C (71°F) | 13°C (56°F) | 0.48" |
| 2009 | 23°C (73°F) | 19°C (67°F) | 0" |
| 2008 | 21°C (69°F) | 16°C (60°F) | 0" |
| 2007 | 24°C (76°F) | 20°C (68°F) | 0.02" |
| 2006 | 23°C (73°F) | 19°C (66°F) | 1.22" |
| 2005 | 27°C (80°F) | 16°C (60°F) | 0" |
| 2004 | 23°C (74°F) | 18°C (64°F) | 0.08" |
| 2003 | 24°C (75°F) | 20°C (68°F) | 0" |
| 2002 | 27°C (80°F) | 19°C (66°F) | 0" |
| 2001 | 27°C (81°F) | 18°C (65°F) | 0" |
| 2000 | 31°C (87°F) | 20°C (68°F) | 0" |
| 1999 | 21°C (69°F) | 14°C (57°F) | 0.46" |
| 1998 | 29°C (85°F) | 19°C (66°F) | 0" |
| 1997 | 26°C (78°F) | 19°C (67°F) | 1.24" |
| 1996 | 22°C (71°F) | 16°C (61°F) | 0" |
| 1995 | 23°C (73°F) | 17°C (62°F) | 0" |
| 1994 | 29°C (85°F) | 21°C (70°F) | 0" |
| 1993 | 25°C (77°F) | 20°C (68°F) | 0" |
| 1992 | 26°C (78°F) | 18°C (65°F) | 0" |
| 1991 | 24°C (76°F) | 14°C (58°F) | 0" |
| 1990 | 28°C (83°F) | 21°C (69°F) | 0.08" |
| 1989 | 28°C (83°F) | 19°C (67°F) | 0" |
| 1988 | 27°C (81°F) | 22°C (71°F) | 0.02" |
| 1987 | 25°C (77°F) | 17°C (63°F) | 0" |
| 1986 | 24°C (75°F) | 17°C (63°F) | 0" |
| 1985 | 39°C (102°F) | 23°C (74°F) | 0" |
| 1984 | 29°C (85°F) | 18°C (64°F) | 0" |
| 1983 | 27°C (80°F) | 18°C (65°F) | 0" |
| 1982 | 23°C (73°F) | 17°C (63°F) | 0.04" |
| 1981 | 22°C (71°F) | 19°C (66°F) | 0.18" |
| 1980 | 28°C (82°F) | 17°C (62°F) | 0" |
| 1979 | 24°C (75°F) | 19°C (67°F) | 0" |
| 1978 | 21°C (70°F) | 14°C (58°F) | 0.52" |
| 1977 | 23°C (73°F) | 19°C (66°F) | 0.08" |
| 1976 | 24°C (76°F) | 17°C (63°F) | 0" |
| 1975 | 23°C (74°F) | 16°C (61°F) | 1.86" |
| 1974 | 23°C (73°F) | 17°C (62°F) | 0" |
| 1973 | 24°C (76°F) | 20°C (68°F) | 0" |
| 1972 | 29°C (85°F) | 19°C (67°F) | 0" |
| 1971 | 22°C (72°F) | 17°C (63°F) | 0.03" |