S
M
T
W
T
F
S
31
72°
42°
1
70°
40°
2
72°
45°
3
75°
43°
4
68°
46°
5
65°
51°
6
61°
48°
7
62°
46°
8
62°
42°
9
65°
39°
10
69°
39°
11
74°
42°
12
80°
49°
13
74°
56°
14
65°
51°
15
63°
42°
16
65°
40°
17
67°
49°
18
67°
49°
19
70°
48°
20
76°
46°
21
82°
51°
22
81°
56°
23
84°
55°
24
87°
48°
25
83°
44°
26
74°
50°
27
71°
46°
28
68°
49°
29
71°
46°
30
71°
43°
1
74°
46°
2
83°
44°
3
75°
46°
4
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Perth
Perth's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Perth. See also: October | November | December.
