Weather on September 11 in Perth
Historical weather data for September 11 in Perth, Australia
Based on 53 years of data from PERTH REGIONAL OFFICE
About This Date
September 11th in Perth, Australia typically brings mild fall weather, with average highs around 20°C and lows near 9°C. Over 53 years of records, the warmest September 11th was in 1982 (21°C average), while the coldest was 2004 (10°C) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 45% of September 11th dates historically, with the wettest September 11th recording 3.34" of rain. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for September 11th in Perth? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 23°C (73°F) | 6°C (43°F) | 0 mm |
| 2024 | 25°C (77°F) | 12°C (53°F) | 0 mm |
| 2023 | 24°C (75°F) | 12°C (53°F) | 0 mm |
| 2022 | 24°C (76°F) | 7°C (44°F) | 0 mm |
| 2021 | 19°C (66°F) | 10°C (50°F) | 9 mm |
| 2020 | 20°C (68°F) | 8°C (47°F) | 0 mm |
| 2019 | 23°C (74°F) | 13°C (56°F) | 0 mm |
| 2018 | 17°C (62°F) | 11°C (51°F) | 7 mm |
| 2017 | 21°C (69°F) | 12°C (54°F) | 13 mm |
| 2016 | 17°C (62°F) | 12°C (53°F) | 0 mm |
| 2015 | 21°C (70°F) | 11°C (51°F) | 20 mm |
| 2014 | 22°C (71°F) | 9°C (49°F) | 6 mm |
| 2013 | 18°C (65°F) | 13°C (56°F) | 49 mm |
| 2012 | 21°C (69°F) | 16°C (60°F) | 0 mm |
| 2011 | 24°C (75°F) | 7°C (44°F) | 0 mm |
| 2010 | 18°C (65°F) | 4°C (39°F) | 0 mm |
| 2009 | 19°C (67°F) | 13°C (56°F) | 30 mm |
| 2008 | 21°C (69°F) | 13°C (56°F) | 2 mm |
| 2007 | 22°C (71°F) | 6°C (43°F) | 0 mm |
| 2006 | 18°C (65°F) | 15°C (59°F) | 56 mm |
| 2005 | 22°C (71°F) | 6°C (43°F) | 0 mm |
| 2004 | 18°C (65°F) | 2°C (35°F) | 0 mm |
| 2003 | 17°C (62°F) | 9°C (49°F) | 31 mm |
| 2002 | 18°C (65°F) | 10°C (50°F) | 0 mm |
| 2001 | 18°C (65°F) | 4°C (40°F) | 1 mm |
| 2000 | 28°C (83°F) | 7°C (44°F) | 0 mm |
| 1999 | 17°C (63°F) | 12°C (54°F) | 80 mm |
| 1998 | 20°C (68°F) | 11°C (51°F) | 0 mm |
| 1997 | 18°C (65°F) | 7°C (44°F) | 1 mm |
| 1996 | 18°C (64°F) | 8°C (46°F) | 40 mm |
| 1995 | 22°C (71°F) | 7°C (45°F) | 0 mm |
| 1994 | 17°C (62°F) | 9°C (49°F) | 85 mm |
| 1991 | 20°C (68°F) | 8°C (47°F) | 0 mm |
| 1990 | 18°C (64°F) | 6°C (42°F) | 0 mm |
| 1989 | 22°C (71°F) | 10°C (50°F) | 0 mm |
| 1988 | 20°C (68°F) | 11°C (51°F) | 2 mm |
| 1987 | 25°C (77°F) | 15°C (59°F) | 0 mm |
| 1986 | 19°C (67°F) | 12°C (53°F) | 5 mm |
| 1985 | 22°C (72°F) | 12°C (54°F) | 1 mm |
| 1984 | 19°C (67°F) | 8°C (47°F) | 0 mm |
| 1983 | 21°C (69°F) | 13°C (55°F) | 4 mm |
| 1982 | 24°C (76°F) | 17°C (62°F) | 0 mm |
| 1981 | 20°C (68°F) | 8°C (46°F) | 0 mm |
| 1980 | 18°C (64°F) | 9°C (48°F) | 0 mm |
| 1979 | 18°C (65°F) | 8°C (47°F) | 0 mm |
| 1978 | 16°C (61°F) | 8°C (46°F) | 28 mm |
| 1977 | 19°C (66°F) | 7°C (44°F) | 0 mm |
| 1976 | 19°C (67°F) | 9°C (49°F) | 0 mm |
| 1975 | 18°C (64°F) | 12°C (54°F) | 3 mm |
| 1974 | 22°C (72°F) | 16°C (60°F) | 37 mm |
| 1973 | 15°C (59°F) | 8°C (46°F) | 43 mm |
| 1972 | 17°C (63°F) | 9°C (49°F) | 27 mm |
| 1971 | 20°C (68°F) | 8°C (47°F) | 0 mm |