S
M
T
W
T
F
S
30
83°
68°
1
82°
66°
2
75°
67°
3
84°
67°
4
77°
66°
5
78°
67°
6
76°
66°
7
77°
67°
8
77°
66°
9
75°
66°
10
79°
67°
11
83°
66°
12
85°
67°
13
80°
70°
14
80°
68°
15
83°
70°
16
75°
67°
17
76°
66°
18
71°
65°
19
74°
66°
20
79°
67°
21
83°
67°
22
82°
67°
23
82°
64°
24
84°
64°
25
85°
64°
26
88°
66°
27
90°
65°
28
85°
67°
29
85°
65°
30
85°
65°
31
84°
64°
1
80°
64°
2
83°
70°
3
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Brasilia
Brasilia's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Brasilia. See also: January | February | March.