S
M
T
W
T
F
S
30
65°
53°
31
69°
55°
1
69°
54°
2
70°
53°
3
65°
54°
4
67°
53°
5
66°
49°
6
66°
52°
7
64°
51°
8
66°
50°
9
64°
50°
10
63°
49°
11
63°
48°
12
64°
48°
13
63°
47°
14
62°
51°
15
62°
51°
16
63°
49°
17
64°
51°
18
63°
48°
19
66°
47°
20
61°
48°
21
61°
48°
22
62°
46°
23
60°
46°
24
60°
47°
25
61°
50°
26
60°
50°
27
63°
46°
28
61°
45°
29
59°
44°
30
60°
44°
1
59°
43°
2
60°
46°
3
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bunbury
Bunbury's September 2026 forecast shows daily high temperatures ranging from 59° to 70°, with overnight lows between 43° and 55°. The average high for September is 63° with an average low of 49°. 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 Bunbury. See also: October | November | December.