Verdict: Excellent month
Perth Weather in May
May hits the sweet spot in Perth — highs around 22°C (72°F), ideal for a full day on foot. Expect showers on roughly 10 days of the month — rarely trip-ruining, worth planning around. Overall, May is one of the best months of the year to be in Perth.
Average high
22°C / 72°F
Average low
13°C / 55°F
Rain days
~10
Precipitation
103 mm
What to pack for Perth in May
- Summer clothes, plus one light layer for air-con and evenings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
May against the rest of the year
Warmest in Perth: Feb (31°C / 88°F) · Coolest: Jun (18°C / 64°F) · Wettest: Jul (~17 rain days)
30°
19°
Jan
31°
20°
Feb
29°
18°
Mar
25°
15°
Apr
22°
13°
May
18°
11°
Jun
18°
11°
Jul
18°
10°
Aug
20°
11°
Sep
22°
12°
Oct
25°
15°
Nov
29°
18°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)