Weather on September 20 in Perth
Historical weather data for September 20 in Perth, Australia
Based on 53 years of data from PERTH REGIONAL OFFICE
About This Date
September 20th in Perth, Australia typically brings pleasant fall weather, with average highs around 21°C and lows near 11°C. Over 53 years of records, the warmest September 20th was in 1994 (23°C average), while the coldest was 2019 (11°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 47% of September 20th dates historically, with the wettest September 20th recording 1.22" 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 20th in Perth? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 23°C (73°F) | 8°C (47°F) | 0.02" |
| 2024 | 21°C (70°F) | 9°C (48°F) | 0" |
| 2023 | 21°C (69°F) | 14°C (58°F) | 0" |
| 2022 | 20°C (68°F) | 11°C (51°F) | 0.46" |
| 2021 | 22°C (72°F) | 10°C (50°F) | 0" |
| 2020 | 17°C (62°F) | 9°C (49°F) | 0.56" |
| 2019 | 18°C (64°F) | 3°C (37°F) | 0.1" |
| 2018 | 26°C (79°F) | 6°C (43°F) | 0" |
| 2017 | 22°C (71°F) | 15°C (59°F) | 0.6" |
| 2016 | 19°C (67°F) | 7°C (44°F) | 0" |
| 2015 | 21°C (69°F) | 8°C (46°F) | 0" |
| 2014 | 34°C (94°F) | 13°C (55°F) | 0" |
| 2013 | 22°C (71°F) | 12°C (54°F) | 0.26" |
| 2012 | 21°C (70°F) | 15°C (59°F) | 0.26" |
| 2011 | 21°C (70°F) | 12°C (54°F) | 0.1" |
| 2010 | 24°C (75°F) | 9°C (49°F) | 0" |
| 2009 | 18°C (65°F) | 11°C (51°F) | 0.26" |
| 2008 | 22°C (71°F) | 9°C (49°F) | 0.02" |
| 2007 | 21°C (70°F) | 9°C (49°F) | 0" |
| 2006 | 19°C (67°F) | 13°C (55°F) | 0.38" |
| 2005 | 21°C (69°F) | 11°C (52°F) | 0.24" |
| 2004 | 22°C (71°F) | 7°C (45°F) | 0.02" |
| 2003 | 18°C (65°F) | 13°C (55°F) | 0.82" |
| 2002 | 21°C (69°F) | 13°C (55°F) | 0" |
| 2001 | 24°C (75°F) | 10°C (50°F) | 0" |
| 2000 | 21°C (69°F) | 7°C (45°F) | 0" |
| 1999 | 21°C (70°F) | 10°C (50°F) | 0" |
| 1998 | 19°C (67°F) | 5°C (41°F) | 0" |
| 1997 | 22°C (71°F) | 9°C (49°F) | 0" |
| 1996 | 21°C (69°F) | 6°C (43°F) | 0" |
| 1995 | 18°C (65°F) | 13°C (55°F) | 0.12" |
| 1994 | 31°C (87°F) | 16°C (60°F) | 0" |
| 1991 | 21°C (69°F) | 9°C (49°F) | 0" |
| 1990 | 17°C (63°F) | 10°C (50°F) | 0.34" |
| 1989 | 19°C (66°F) | 15°C (59°F) | 0.8" |
| 1988 | 21°C (69°F) | 11°C (52°F) | 0.14" |
| 1987 | 22°C (71°F) | 9°C (49°F) | 0" |
| 1986 | 18°C (65°F) | 11°C (51°F) | 0.1" |
| 1985 | 27°C (80°F) | 18°C (64°F) | 0" |
| 1984 | 19°C (66°F) | 9°C (48°F) | 0" |
| 1983 | 25°C (77°F) | 12°C (53°F) | 0" |
| 1982 | 19°C (67°F) | 14°C (58°F) | 0.06" |
| 1981 | 18°C (64°F) | 13°C (55°F) | 0.98" |
| 1980 | 26°C (78°F) | 11°C (51°F) | 0" |
| 1979 | 19°C (67°F) | 12°C (53°F) | 0.48" |
| 1978 | 17°C (62°F) | 8°C (47°F) | 0.98" |
| 1977 | 29°C (85°F) | 11°C (52°F) | 0" |
| 1976 | 22°C (71°F) | 12°C (53°F) | 0" |
| 1975 | 19°C (67°F) | 11°C (52°F) | 1.22" |
| 1974 | 21°C (70°F) | 11°C (51°F) | 0" |
| 1973 | 20°C (68°F) | 8°C (46°F) | 0" |
| 1972 | 19°C (67°F) | 17°C (62°F) | 0" |
| 1971 | 18°C (65°F) | 9°C (49°F) | 0.71" |