Weather on May 21 in Sydney
Historical weather data for May 21 in Sydney, Australia
Based on 56 years of data from SYDNEY (OBSERVATORY HILL)
About This Date
May 21st in Sydney, Australia typically brings mild spring weather, with average highs around 20°C and lows near 12°C. Over 56 years of records, the warmest May 21st was in 2019 (20°C average), while the coldest was 1972 (13°C) — a 13°F range across recorded history. Rain or other precipitation has occurred on about 39% of May 21st dates historically, with the wettest May 21st recording 2.07" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for May 21st in Sydney? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | -- | 13°C (56°F) | -- |
| 2025 | 21°C (70°F) | 17°C (63°F) | -- |
| 2024 | 18°C (64°F) | 13°C (55°F) | -- |
| 2023 | 18°C (65°F) | 12°C (53°F) | -- |
| 2022 | 19°C (67°F) | 12°C (53°F) | -- |
| 2021 | 18°C (64°F) | 12°C (54°F) | -- |
| 2020 | 18°C (65°F) | 15°C (59°F) | 0 mm |
| 2019 | 27°C (81°F) | 13°C (55°F) | 0 mm |
| 2018 | 22°C (72°F) | 12°C (53°F) | 0 mm |
| 2017 | 23°C (74°F) | 14°C (57°F) | 0 mm |
| 2016 | 22°C (71°F) | 13°C (56°F) | 0 mm |
| 2015 | 22°C (71°F) | 14°C (58°F) | 0 mm |
| 2014 | 23°C (74°F) | 15°C (59°F) | 0 mm |
| 2013 | 23°C (73°F) | 10°C (50°F) | 0 mm |
| 2012 | 21°C (70°F) | 12°C (54°F) | 1 mm |
| 2011 | 23°C (74°F) | 12°C (54°F) | 0 mm |
| 2010 | 19°C (67°F) | 12°C (53°F) | 0 mm |
| 2009 | 19°C (67°F) | 15°C (59°F) | 27 mm |
| 2008 | 19°C (66°F) | 11°C (52°F) | 0 mm |
| 2007 | 22°C (71°F) | 15°C (59°F) | 0 mm |
| 2006 | 19°C (67°F) | 11°C (52°F) | 0 mm |
| 2005 | 22°C (71°F) | 11°C (51°F) | 1 mm |
| 2004 | 23°C (74°F) | 12°C (53°F) | 0 mm |
| 2003 | 22°C (71°F) | 13°C (56°F) | 0 mm |
| 2002 | 19°C (66°F) | 11°C (52°F) | 3 mm |
| 2001 | 20°C (68°F) | 11°C (51°F) | 0 mm |
| 2000 | 18°C (65°F) | 11°C (52°F) | 7 mm |
| 1999 | 19°C (66°F) | 12°C (54°F) | 0 mm |
| 1998 | 20°C (68°F) | 13°C (55°F) | 0 mm |
| 1997 | 19°C (67°F) | 13°C (56°F) | 7 mm |
| 1996 | 19°C (66°F) | 10°C (50°F) | 0 mm |
| 1995 | 18°C (65°F) | 12°C (53°F) | 0 mm |
| 1994 | 18°C (64°F) | 9°C (48°F) | 0 mm |
| 1993 | 21°C (70°F) | 10°C (50°F) | 0 mm |
| 1992 | 18°C (65°F) | 12°C (53°F) | 18 mm |
| 1991 | 19°C (67°F) | 17°C (62°F) | 2 mm |
| 1990 | 18°C (65°F) | 8°C (46°F) | 15 mm |
| 1989 | 19°C (66°F) | 13°C (55°F) | 3 mm |
| 1988 | 19°C (66°F) | 11°C (52°F) | 0 mm |
| 1987 | 18°C (65°F) | 12°C (54°F) | 9 mm |
| 1986 | 21°C (69°F) | 11°C (51°F) | 0 mm |
| 1985 | 16°C (60°F) | 13°C (55°F) | 8 mm |
| 1984 | 19°C (66°F) | 13°C (56°F) | 3 mm |
| 1983 | 17°C (63°F) | 13°C (56°F) | 53 mm |
| 1982 | 19°C (67°F) | 11°C (52°F) | 0 mm |
| 1981 | 18°C (65°F) | 12°C (53°F) | 0 mm |
| 1980 | 18°C (64°F) | 8°C (47°F) | 0 mm |
| 1979 | 19°C (67°F) | 12°C (54°F) | 11 mm |
| 1978 | 19°C (67°F) | 13°C (55°F) | 43 mm |
| 1977 | 20°C (68°F) | 15°C (59°F) | 0 mm |
| 1976 | 22°C (72°F) | 11°C (51°F) | 0 mm |
| 1975 | 27°C (80°F) | 12°C (54°F) | 0 mm |
| 1974 | 21°C (69°F) | 10°C (50°F) | 0 mm |
| 1973 | 19°C (66°F) | 11°C (52°F) | 0 mm |
| 1972 | 16°C (61°F) | 10°C (50°F) | 15 mm |
| 1971 | 18°C (64°F) | 13°C (56°F) | 6 mm |