S
M
T
W
T
F
S
26
75°
60°
27
74°
59°
28
71°
60°
29
75°
61°
30
74°
60°
31
71°
59°
1
70°
57°
2
70°
59°
3
71°
59°
4
70°
58°
5
70°
59°
6
71°
59°
7
71°
60°
8
70°
59°
9
71°
60°
10
74°
56°
11
73°
54°
12
72°
54°
13
71°
57°
14
71°
55°
15
74°
54°
16
71°
55°
17
71°
58°
18
74°
59°
19
75°
59°
20
75°
55°
21
74°
54°
22
74°
53°
23
70°
55°
24
69°
56°
25
71°
55°
26
71°
54°
27
70°
56°
28
72°
57°
29
73°
56°
30
73°
55°
31
72°
55°
1
70°
49°
2
71°
50°
3
71°
51°
4
68°
55°
5
71°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sydney
Sydney's August 2026 forecast shows daily high temperatures ranging from 68° to 75°, with overnight lows between 49° and 61°. The average high for August is 72° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Sydney. See also: September | October | November.