S
M
T
W
T
F
S
30
67°
50°
31
72°
51°
1
80°
53°
2
83°
63°
3
84°
63°
4
82°
56°
5
90°
58°
6
90°
60°
7
72°
57°
8
73°
53°
9
65°
50°
10
66°
51°
11
67°
51°
12
70°
51°
13
N/A
14
79°
59°
15
75°
51°
16
61°
50°
17
64°
48°
18
74°
52°
19
83°
58°
20
88°
61°
21
74°
60°
22
78°
63°
23
77°
60°
24
76°
60°
25
74°
61°
26
69°
58°
27
74°
59°
28
75°
59°
29
73°
60°
30
68°
60°
1
76°
62°
2
75°
60°
3
73°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sydney
Sydney's September 2026 forecast shows daily high temperatures ranging from 61° to 88°, with overnight lows between 48° and 63°. The average high for September is 74° with an average low of 58°. 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 Sydney. See also: October | November | December.
