S
M
T
W
T
F
S
30
55°
37°
31
55°
38°
1
56°
39°
2
56°
38°
3
59°
39°
4
55°
38°
5
56°
39°
6
55°
42°
7
56°
39°
8
55°
38°
9
Hist. Avg.
59°
40°
10
Hist. Avg.
60°
40°
11
Hist. Avg.
60°
40°
12
Hist. Avg.
60°
40°
13
Hist. Avg.
60°
40°
14
Hist. Avg.
60°
40°
15
Hist. Avg.
60°
40°
16
Hist. Avg.
60°
40°
17
Hist. Avg.
60°
40°
18
Hist. Avg.
60°
40°
19
Hist. Avg.
61°
40°
20
Hist. Avg.
61°
40°
21
Hist. Avg.
61°
41°
22
Hist. Avg.
61°
41°
23
Hist. Avg.
61°
41°
24
Hist. Avg.
61°
41°
25
Hist. Avg.
61°
41°
26
Hist. Avg.
61°
41°
27
Hist. Avg.
62°
41°
28
Hist. Avg.
62°
41°
29
Hist. Avg.
62°
41°
30
Hist. Avg.
62°
41°
1
Hist. Avg.
62°
41°
2
Hist. Avg.
62°
41°
3
Hist. Avg.
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Perth
Perth's September 2026 forecast shows daily high temperatures ranging from 55° to 59°, with overnight lows between 37° and 42°. The average high for September is 56° with an average low of 39°. 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.
