S
M
T
W
T
F
S
29
44°
38°
30
48°
38°
1
49°
36°
2
44°
36°
3
44°
37°
4
47°
37°
5
50°
35°
6
45°
34°
7
43°
38°
8
47°
38°
9
47°
33°
10
48°
32°
11
43°
33°
12
44°
38°
13
48°
37°
14
47°
36°
15
47°
35°
16
49°
33°
17
49°
31°
18
42°
31°
19
42°
33°
20
43°
35°
21
42°
38°
22
48°
37°
23
49°
37°
24
48°
35°
25
47°
32°
26
47°
32°
27
41°
36°
28
43°
37°
29
47°
37°
30
47°
36°
31
46°
35°
1
44°
37°
2
46°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Perth
Perth's December 2026 forecast shows daily high temperatures ranging from 41° to 50°, with overnight lows between 31° and 38°. The average high for December is 46° with an average low of 35°. 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 Perth. See also: January | February | March.
