S
M
T
W
T
F
S
26
80°
44°
27
65°
52°
28
69°
55°
29
75°
54°
30
74°
51°
1
66°
41°
2
67°
38°
3
69°
40°
4
74°
44°
5
76°
50°
6
75°
49°
7
75°
51°
8
75°
52°
9
75°
55°
10
78°
53°
11
82°
50°
12
84°
48°
13
76°
45°
14
70°
47°
15
68°
45°
16
71°
46°
17
73°
44°
18
72°
46°
19
81°
47°
20
80°
45°
21
N/A
22
66°
40°
23
64°
44°
24
69°
47°
25
73°
49°
26
76°
49°
27
72°
57°
28
69°
52°
29
66°
48°
30
65°
52°
31
66°
48°
1
65°
47°
2
67°
49°
3
65°
53°
4
66°
55°
5
69°
56°
6
65°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Perth
Perth's May 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 40° and 57°. The average high for May is 68° with an average low of 50°. 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.
