S
M
T
W
T
F
S
27
74°
59°
28
75°
59°
29
73°
60°
30
68°
60°
1
76°
62°
2
75°
60°
3
73°
58°
4
68°
60°
5
67°
60°
6
68°
59°
7
70°
61°
8
71°
61°
9
69°
60°
10
69°
60°
11
75°
61°
12
69°
61°
13
71°
60°
14
76°
63°
15
77°
62°
16
71°
62°
17
70°
61°
18
70°
62°
19
73°
62°
20
72°
63°
21
77°
63°
22
78°
62°
23
71°
63°
24
77°
63°
25
73°
61°
26
72°
58°
27
71°
60°
28
78°
56°
29
72°
58°
30
77°
63°
31
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sydney
Sydney's October 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 56° and 63°. The average high for October is 73° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Sydney. See also: November | December | January.