Weather on May 18 in Perth
Historical weather data for May 18 in Perth, Australia
Based on 54 years of data from PERTH REGIONAL OFFICE
About This Date
May 18th in Perth, Australia typically brings pleasant spring weather, with average highs around 22°C and lows near 11°C. Over 54 years of records, the warmest May 18th was in 2024 (21°C average), while the coldest was 2019 (10°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 18th dates historically, with the wettest May 18th recording 4.28" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Perth? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 21°C (70°F) | 9°C (49°F) | 0 mm |
| 2025 | 27°C (80°F) | 7°C (45°F) | 0 mm |
| 2024 | 28°C (82°F) | 15°C (59°F) | 0 mm |
| 2023 | 27°C (80°F) | 13°C (56°F) | 0 mm |
| 2022 | 22°C (71°F) | 14°C (58°F) | 10 mm |
| 2021 | 25°C (77°F) | 14°C (58°F) | 0 mm |
| 2020 | 19°C (67°F) | 7°C (44°F) | 0 mm |
| 2019 | 17°C (63°F) | 2°C (36°F) | 0 mm |
| 2018 | 24°C (76°F) | 10°C (50°F) | 0 mm |
| 2017 | 26°C (79°F) | 9°C (49°F) | 0 mm |
| 2016 | 22°C (72°F) | 13°C (55°F) | 9 mm |
| 2015 | 19°C (67°F) | 14°C (57°F) | 109 mm |
| 2014 | 21°C (70°F) | 13°C (55°F) | 1 mm |
| 2013 | 21°C (69°F) | 11°C (51°F) | 2 mm |
| 2012 | 24°C (75°F) | 9°C (49°F) | 0 mm |
| 2011 | 21°C (70°F) | 9°C (49°F) | 21 mm |
| 2010 | 24°C (75°F) | 9°C (48°F) | 0 mm |
| 2009 | 23°C (73°F) | 6°C (43°F) | 0 mm |
| 2008 | 21°C (70°F) | 6°C (42°F) | 0 mm |
| 2007 | 18°C (65°F) | 11°C (52°F) | 4 mm |
| 2006 | 23°C (73°F) | 11°C (51°F) | 0 mm |
| 2005 | 21°C (69°F) | 12°C (53°F) | 0 mm |
| 2004 | 22°C (71°F) | 13°C (55°F) | 25 mm |
| 2003 | 19°C (66°F) | 12°C (53°F) | 16 mm |
| 2002 | 22°C (71°F) | 7°C (44°F) | 0 mm |
| 2001 | 21°C (69°F) | 11°C (51°F) | 0 mm |
| 2000 | 23°C (74°F) | 7°C (44°F) | 0 mm |
| 1999 | 26°C (78°F) | 9°C (48°F) | 0 mm |
| 1998 | 21°C (70°F) | 14°C (58°F) | 7 mm |
| 1997 | 22°C (72°F) | 17°C (62°F) | 9 mm |
| 1996 | 19°C (67°F) | 4°C (39°F) | 0 mm |
| 1995 | 19°C (67°F) | 11°C (52°F) | 51 mm |
| 1994 | 25°C (77°F) | 8°C (46°F) | 0 mm |
| 1991 | 22°C (71°F) | 11°C (52°F) | 0 mm |
| 1990 | 22°C (71°F) | 13°C (55°F) | 1 mm |
| 1989 | 23°C (73°F) | 13°C (55°F) | 0 mm |
| 1988 | 21°C (69°F) | 15°C (59°F) | 27 mm |
| 1987 | 22°C (71°F) | 9°C (49°F) | 0 mm |
| 1986 | 23°C (74°F) | 11°C (51°F) | 0 mm |
| 1985 | 28°C (82°F) | 13°C (55°F) | 0 mm |
| 1984 | 20°C (68°F) | 9°C (49°F) | 21 mm |
| 1983 | 23°C (73°F) | 14°C (57°F) | 1 mm |
| 1982 | 18°C (64°F) | 8°C (47°F) | 0 mm |
| 1981 | 24°C (76°F) | 14°C (58°F) | 0 mm |
| 1980 | 24°C (76°F) | 13°C (55°F) | 0 mm |
| 1979 | 23°C (73°F) | 12°C (54°F) | 0 mm |
| 1978 | 23°C (74°F) | 13°C (55°F) | 0 mm |
| 1977 | 21°C (69°F) | 14°C (57°F) | 23 mm |
| 1976 | 21°C (70°F) | 11°C (51°F) | 0 mm |
| 1975 | 23°C (73°F) | 13°C (56°F) | 2 mm |
| 1974 | 22°C (72°F) | 13°C (56°F) | 0 mm |
| 1973 | 20°C (68°F) | 13°C (56°F) | 0 mm |
| 1972 | 24°C (76°F) | 11°C (52°F) | 0 mm |
| 1971 | 21°C (70°F) | 15°C (59°F) | 3 mm |