S
M
T
W
T
F
S
26
76°
60°
27
78°
62°
28
78°
61°
29
76°
61°
30
77°
60°
1
73°
59°
2
74°
58°
3
70°
58°
4
70°
55°
5
71°
58°
6
71°
58°
7
75°
57°
8
75°
58°
9
72°
58°
10
73°
56°
11
73°
58°
12
71°
57°
13
70°
56°
14
70°
57°
15
74°
56°
16
75°
57°
17
75°
56°
18
74°
53°
19
70°
50°
20
71°
49°
21
68°
48°
22
68°
49°
23
69°
50°
24
68°
51°
25
67°
50°
26
67°
53°
27
68°
52°
28
67°
53°
29
68°
52°
30
67°
51°
31
66°
52°
1
66°
54°
2
68°
50°
3
66°
49°
4
66°
49°
5
65°
50°
6
65°
48°
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 65° to 78°, with overnight lows between 48° and 62°. The average high for May is 71° 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.
