S
M
T
W
T
F
S
29
74°
66°
30
76°
60°
1
82°
59°
2
75°
60°
3
75°
65°
4
76°
67°
5
82°
67°
6
76°
65°
7
81°
62°
8
75°
61°
9
75°
59°
10
77°
60°
11
77°
67°
12
76°
62°
13
77°
67°
14
80°
65°
15
Hist. Avg.
76°
62°
16
Hist. Avg.
77°
63°
17
Hist. Avg.
77°
63°
18
Hist. Avg.
77°
63°
19
Hist. Avg.
77°
63°
20
Hist. Avg.
77°
63°
21
Hist. Avg.
77°
63°
22
Hist. Avg.
77°
63°
23
Hist. Avg.
77°
63°
24
Hist. Avg.
77°
63°
25
Hist. Avg.
77°
63°
26
Hist. Avg.
77°
63°
27
Hist. Avg.
77°
63°
28
Hist. Avg.
77°
63°
29
Hist. Avg.
77°
63°
30
Hist. Avg.
77°
63°
31
Hist. Avg.
77°
64°
1
Hist. Avg.
77°
64°
2
Hist. Avg.
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Sydney
Sydney's December 2026 forecast shows daily high temperatures ranging from 74° to 82°, with overnight lows between 59° and 67°. The average high for December is 77° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Sydney. See also: January | February | March.
