Weather on September 15 in Perth
Historical weather data for September 15 in Perth, Australia
Based on 53 years of data from PERTH REGIONAL OFFICE
About This Date
September 15th in Perth, Australia typically brings mild fall weather, with average highs around 20°C and lows near 10°C. Over 53 years of records, the warmest September 15th was in 1987 (22°C average), while the coldest was 1986 (12°C) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 51% of September 15th dates historically, with the wettest September 15th recording 3" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Perth? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 17°C (62°F) | 11°C (52°F) | 22 mm |
| 2024 | 24°C (76°F) | 12°C (54°F) | 0 mm |
| 2023 | 21°C (69°F) | 16°C (60°F) | 8 mm |
| 2022 | 19°C (66°F) | 11°C (52°F) | 4 mm |
| 2021 | 21°C (70°F) | 7°C (45°F) | 0 mm |
| 2020 | 27°C (80°F) | 11°C (51°F) | 0 mm |
| 2019 | 22°C (71°F) | 11°C (52°F) | 0 mm |
| 2018 | 19°C (67°F) | 5°C (41°F) | 0 mm |
| 2017 | 28°C (82°F) | 14°C (57°F) | 0 mm |
| 2016 | 18°C (65°F) | 4°C (40°F) | 0 mm |
| 2015 | 18°C (64°F) | 9°C (48°F) | 3 mm |
| 2014 | 23°C (73°F) | 11°C (51°F) | 0 mm |
| 2013 | 18°C (64°F) | 12°C (53°F) | 28 mm |
| 2012 | 26°C (79°F) | 8°C (46°F) | 0 mm |
| 2011 | 21°C (70°F) | 14°C (57°F) | 2 mm |
| 2010 | 22°C (72°F) | 6°C (42°F) | 0 mm |
| 2009 | 17°C (63°F) | 13°C (56°F) | 14 mm |
| 2008 | 21°C (69°F) | 6°C (43°F) | 3 mm |
| 2007 | 18°C (65°F) | 10°C (50°F) | 25 mm |
| 2006 | 27°C (80°F) | 11°C (51°F) | 0 mm |
| 2005 | 18°C (65°F) | 5°C (41°F) | 0 mm |
| 2004 | 20°C (68°F) | 8°C (46°F) | 0 mm |
| 2003 | 21°C (69°F) | 5°C (41°F) | 0 mm |
| 2002 | 15°C (59°F) | 8°C (47°F) | 76 mm |
| 2001 | 20°C (68°F) | 14°C (58°F) | 1 mm |
| 2000 | 19°C (67°F) | 11°C (52°F) | 4 mm |
| 1999 | 15°C (59°F) | 8°C (46°F) | 19 mm |
| 1998 | 22°C (71°F) | 7°C (44°F) | 0 mm |
| 1997 | 24°C (76°F) | 11°C (51°F) | 0 mm |
| 1996 | 20°C (68°F) | 16°C (61°F) | 25 mm |
| 1995 | 21°C (70°F) | 7°C (45°F) | 0 mm |
| 1994 | 22°C (71°F) | 7°C (44°F) | 0 mm |
| 1991 | 14°C (58°F) | 8°C (47°F) | 39 mm |
| 1990 | 20°C (68°F) | 15°C (59°F) | 3 mm |
| 1989 | 18°C (64°F) | 10°C (50°F) | 20 mm |
| 1988 | 19°C (66°F) | 9°C (49°F) | 15 mm |
| 1987 | 29°C (84°F) | 15°C (59°F) | 0 mm |
| 1986 | 16°C (60°F) | 8°C (47°F) | 61 mm |
| 1985 | 17°C (63°F) | 8°C (47°F) | 0 mm |
| 1984 | 17°C (62°F) | 11°C (51°F) | 17 mm |
| 1983 | 21°C (70°F) | 14°C (57°F) | 29 mm |
| 1982 | 17°C (62°F) | 9°C (49°F) | 75 mm |
| 1981 | 22°C (71°F) | 11°C (51°F) | 0 mm |
| 1980 | 18°C (64°F) | 11°C (52°F) | 0 mm |
| 1979 | 18°C (65°F) | 12°C (53°F) | 4 mm |
| 1978 | 19°C (66°F) | 11°C (51°F) | 67 mm |
| 1977 | 21°C (70°F) | 15°C (59°F) | 5 mm |
| 1976 | 24°C (76°F) | 12°C (54°F) | 0 mm |
| 1975 | 19°C (67°F) | 10°C (50°F) | 0 mm |
| 1974 | 23°C (73°F) | 10°C (50°F) | 0 mm |
| 1973 | 17°C (63°F) | 11°C (52°F) | 28 mm |
| 1972 | 20°C (68°F) | 12°C (53°F) | 1 mm |
| 1971 | 22°C (71°F) | 9°C (48°F) | 0 mm |