S
M
T
W
T
F
S
26
80°
44°
27
65°
52°
28
N/A
29
72°
56°
30
70°
53°
1
62°
48°
2
65°
51°
3
70°
50°
4
71°
53°
5
72°
50°
6
72°
53°
7
74°
56°
8
74°
56°
9
73°
56°
10
74°
55°
11
69°
57°
12
67°
57°
13
67°
58°
14
68°
53°
15
66°
52°
16
67°
52°
17
67°
57°
18
68°
56°
19
67°
53°
20
66°
57°
21
67°
58°
22
68°
58°
23
68°
57°
24
71°
58°
25
72°
58°
26
71°
57°
27
70°
59°
28
70°
58°
29
67°
58°
30
70°
57°
31
64°
55°
1
65°
55°
2
66°
54°
3
65°
56°
4
66°
54°
5
65°
52°
6
65°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Perth
Perth's May 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 48° and 59°. The average high for May is 68° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Perth. See also: June | July | August.
