Weather on August 18 in Perth
Historical weather data for August 18 in Perth, Australia
Based on 53 years of data from PERTH REGIONAL OFFICE
About This Date
August 18th in Perth, Australia typically brings mild summer weather, with average highs around 19°C and lows near 9°C. Over 53 years of records, the warmest August 18th was in 1987 (18°C average), while the coldest was 2001 (10°C) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 58% of August 18th dates historically, with the wettest August 18th recording 5" 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 August 18th in Perth? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 22°C (72°F) | 11°C (51°F) | 0" |
| 2024 | 18°C (64°F) | 10°C (50°F) | 2.38" |
| 2023 | 19°C (67°F) | 6°C (42°F) | 0" |
| 2022 | 18°C (65°F) | 3°C (38°F) | 0.92" |
| 2021 | 21°C (69°F) | 11°C (52°F) | 0.12" |
| 2020 | 17°C (62°F) | 13°C (55°F) | 0.16" |
| 2019 | 18°C (65°F) | 3°C (38°F) | 0" |
| 2018 | 18°C (65°F) | 5°C (41°F) | 0" |
| 2017 | 21°C (69°F) | 9°C (48°F) | 0" |
| 2016 | 16°C (60°F) | 6°C (42°F) | 1.74" |
| 2015 | 20°C (68°F) | 12°C (54°F) | 0.5" |
| 2014 | 19°C (67°F) | 13°C (55°F) | 1.26" |
| 2013 | 19°C (66°F) | 8°C (46°F) | 0.18" |
| 2012 | 24°C (75°F) | 7°C (44°F) | 0" |
| 2011 | 19°C (67°F) | 8°C (47°F) | 0" |
| 2010 | 16°C (60°F) | 8°C (47°F) | 0.46" |
| 2009 | 20°C (68°F) | 9°C (49°F) | 0.04" |
| 2008 | 23°C (73°F) | 2°C (35°F) | 0" |
| 2007 | 24°C (76°F) | 6°C (42°F) | 0" |
| 2006 | 21°C (70°F) | 4°C (39°F) | 0" |
| 2005 | 14°C (58°F) | 6°C (43°F) | 2.02" |
| 2004 | 17°C (63°F) | 7°C (44°F) | 1.18" |
| 2003 | 21°C (70°F) | 4°C (40°F) | 0" |
| 2002 | 22°C (71°F) | 5°C (41°F) | 0" |
| 2001 | 18°C (64°F) | 2°C (35°F) | 0" |
| 2000 | 18°C (65°F) | 13°C (55°F) | 0.02" |
| 1999 | 19°C (66°F) | 13°C (55°F) | 2.28" |
| 1998 | 18°C (65°F) | 12°C (53°F) | 0.74" |
| 1997 | 18°C (65°F) | 3°C (37°F) | 0" |
| 1996 | 17°C (63°F) | 9°C (48°F) | 0" |
| 1995 | 20°C (68°F) | 8°C (46°F) | 0" |
| 1994 | 21°C (69°F) | 7°C (45°F) | 0" |
| 1991 | 18°C (65°F) | 13°C (55°F) | 1.14" |
| 1990 | 17°C (62°F) | 12°C (53°F) | 1.16" |
| 1989 | 18°C (65°F) | 14°C (58°F) | 5" |
| 1988 | 18°C (65°F) | 8°C (47°F) | 0" |
| 1987 | 26°C (78°F) | 11°C (51°F) | 0" |
| 1986 | 18°C (64°F) | 8°C (46°F) | 1.56" |
| 1985 | 17°C (62°F) | 14°C (57°F) | 1.22" |
| 1984 | 18°C (65°F) | 12°C (54°F) | 0.16" |
| 1983 | 20°C (68°F) | 10°C (50°F) | 0.78" |
| 1982 | 21°C (70°F) | 14°C (58°F) | 0.34" |
| 1981 | 18°C (64°F) | 12°C (53°F) | 0.18" |
| 1980 | 14°C (58°F) | 8°C (46°F) | 2.04" |
| 1979 | 19°C (66°F) | 12°C (53°F) | 0.24" |
| 1978 | 20°C (68°F) | 9°C (49°F) | 0" |
| 1977 | 19°C (67°F) | 14°C (58°F) | 0.68" |
| 1976 | 18°C (65°F) | 11°C (52°F) | 0" |
| 1975 | 16°C (61°F) | 9°C (49°F) | 0.86" |
| 1974 | 17°C (62°F) | 9°C (49°F) | 0.82" |
| 1973 | 22°C (72°F) | 9°C (49°F) | 0" |
| 1972 | 17°C (63°F) | 10°C (50°F) | 1.42" |
| 1971 | 18°C (64°F) | 11°C (51°F) | 0.2" |