S
M
T
W
T
F
S
26
66°
32°
27
73°
35°
28
68°
44°
29
56°
45°
30
48°
37°
1
50°
35°
2
50°
32°
3
53°
42°
4
61°
50°
5
62°
42°
6
50°
40°
7
52°
35°
8
48°
37°
9
50°
39°
10
53°
42°
11
58°
41°
12
57°
41°
13
56°
43°
14
55°
42°
15
59°
37°
16
58°
38°
17
58°
40°
18
61°
48°
19
63°
48°
20
69°
49°
21
69°
48°
22
65°
42°
23
60°
47°
24
65°
42°
25
60°
41°
26
62°
46°
27
61°
47°
28
62°
51°
29
68°
51°
30
67°
43°
31
66°
42°
1
62°
42°
2
63°
43°
3
64°
44°
4
63°
44°
5
64°
45°
6
65°
50°
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 48° to 69°, with overnight lows between 32° and 51°. The average high for May is 60° with an average low of 43°. 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.
