Perth Weather in May
In May, Perth averages a high of 22°C (72°F) and a low of 11°C (52°F), from 54 years of daily records (1971–2026).
22°C
Average high
72°F
11°C
Average low
52°F
34°C
Record high
94°F · May 1, 2002
1°C
Record low
34°F · May 25, 2012
What May Is Like in Perth
- May in Perth has become 0.6°C (1.1°F) cooler on average: the 2012–2026 average against 1970–1989.
- The warmest May in the record was 2024; the coldest was 2015.
At least 1 mm of rain falls on 30% of May days, and the month averages 93 mm in total.
Warmest: 2024 (24.9°C)Latest: 2026 (22.4°C)10-year averageLong-run average (22.2°C)
Look Up a Day in May
See the weather in Perth on any May date, year by year.
Source: NOAA GHCN-Daily, Perth Metro (1993–2026); Perth Regional Office (1971–1992). Averages cover 1971–2026. How we compute this