Weather on April 21 in Sydney
Historical weather data for April 21 in Sydney, Australia
Based on 55 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
April 21st in Sydney, Australia typically brings pleasant spring weather, with average highs around 23°C and lows near 15°C. Over 55 years of records, the warmest April 21st was in 1979 (22°C average), while the coldest was 1987 (15°C) — a 13°F range across recorded history. Rain or other precipitation has occurred on about 27% of April 21st dates historically, with the wettest April 21st recording 11.94" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Sydney? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 25°C (77°F) | 20°C (68°F) | -- |
| 2024 | 21°C (69°F) | 17°C (62°F) | -- |
| 2023 | 21°C (69°F) | 16°C (61°F) | -- |
| 2022 | 21°C (70°F) | 16°C (60°F) | -- |
| 2021 | 19°C (66°F) | 15°C (59°F) | -- |
| 2020 | 26°C (78°F) | 14°C (58°F) | 0" |
| 2019 | 25°C (77°F) | 18°C (65°F) | 0" |
| 2018 | 24°C (75°F) | 17°C (62°F) | 0" |
| 2017 | 24°C (75°F) | 14°C (58°F) | 0" |
| 2016 | 24°C (76°F) | 17°C (63°F) | 0" |
| 2015 | 18°C (64°F) | 14°C (58°F) | 11.94" |
| 2014 | 26°C (78°F) | 13°C (56°F) | 0" |
| 2013 | 22°C (72°F) | 11°C (52°F) | 3.28" |
| 2012 | 25°C (77°F) | 18°C (65°F) | 0" |
| 2011 | 26°C (78°F) | 15°C (59°F) | 0" |
| 2010 | 24°C (76°F) | 17°C (62°F) | 0" |
| 2009 | 22°C (72°F) | 17°C (62°F) | 0.06" |
| 2008 | 19°C (67°F) | 14°C (58°F) | 2.18" |
| 2007 | 26°C (78°F) | 14°C (58°F) | 0" |
| 2006 | 24°C (75°F) | 14°C (58°F) | 0" |
| 2005 | 23°C (74°F) | 14°C (58°F) | 0.18" |
| 2004 | 26°C (79°F) | 16°C (61°F) | 0" |
| 2003 | 22°C (71°F) | 14°C (58°F) | 0.22" |
| 2002 | 25°C (77°F) | 18°C (64°F) | 0" |
| 2001 | 18°C (65°F) | 16°C (61°F) | 3.92" |
| 2000 | 24°C (76°F) | 13°C (55°F) | 0" |
| 1999 | 18°C (65°F) | 15°C (59°F) | 0" |
| 1998 | 26°C (79°F) | 18°C (64°F) | 0.04" |
| 1997 | 23°C (74°F) | 16°C (60°F) | 0" |
| 1996 | 25°C (77°F) | 11°C (52°F) | 0" |
| 1995 | 21°C (70°F) | 13°C (55°F) | 0" |
| 1994 | 23°C (73°F) | 15°C (59°F) | 0" |
| 1993 | 23°C (74°F) | 13°C (56°F) | 0" |
| 1992 | 23°C (73°F) | 17°C (63°F) | 0.04" |
| 1991 | 25°C (77°F) | 14°C (58°F) | 0" |
| 1990 | 24°C (75°F) | 18°C (64°F) | 1.06" |
| 1989 | 24°C (76°F) | 15°C (59°F) | 0" |
| 1988 | 22°C (72°F) | 14°C (58°F) | 0" |
| 1987 | 19°C (66°F) | 11°C (51°F) | 0" |
| 1986 | 24°C (76°F) | 13°C (56°F) | 0" |
| 1985 | 18°C (65°F) | 13°C (55°F) | 0.14" |
| 1984 | 23°C (73°F) | 13°C (56°F) | 0.54" |
| 1983 | 22°C (71°F) | 12°C (54°F) | 0" |
| 1982 | 22°C (72°F) | 14°C (58°F) | 0" |
| 1981 | 23°C (74°F) | 15°C (59°F) | 0" |
| 1980 | 24°C (75°F) | 15°C (59°F) | 0.48" |
| 1979 | 28°C (82°F) | 17°C (63°F) | 0.02" |
| 1978 | 22°C (71°F) | 17°C (63°F) | 0" |
| 1977 | 23°C (73°F) | 14°C (57°F) | 0" |
| 1976 | 24°C (76°F) | 12°C (53°F) | 0" |
| 1975 | 21°C (69°F) | 17°C (62°F) | 0" |
| 1974 | 22°C (71°F) | 17°C (63°F) | 4.32" |
| 1973 | 24°C (75°F) | 13°C (55°F) | 0" |
| 1972 | 22°C (72°F) | 16°C (61°F) | 0" |
| 1971 | 22°C (72°F) | 11°C (51°F) | 0" |