S
M
T
W
T
F
S
26
65°
51°
27
64°
50°
28
64°
51°
29
65°
54°
30
67°
51°
31
66°
55°
1
67°
55°
2
65°
54°
3
67°
55°
4
66°
55°
5
69°
54°
6
69°
54°
7
66°
53°
8
65°
52°
9
64°
50°
10
64°
54°
11
66°
55°
12
66°
56°
13
67°
55°
14
68°
55°
15
69°
54°
16
68°
54°
17
64°
53°
18
64°
54°
19
65°
54°
20
66°
53°
21
66°
52°
22
63°
49°
23
63°
53°
24
65°
50°
25
64°
49°
26
63°
49°
27
63°
50°
28
64°
52°
29
63°
51°
30
63°
49°
31
64°
48°
1
62°
51°
2
62°
48°
3
63°
48°
4
62°
47°
5
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Perth
Perth's August 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 47° and 56°. The average high for August is 65° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Perth. See also: September | October | November.