S
M
T
W
T
F
S
29
49°
36°
30
46°
42°
1
48°
42°
2
48°
41°
3
50°
38°
4
39°
38°
5
48°
36°
6
56°
34°
7
44°
32°
8
42°
29°
9
40°
27°
10
37°
24°
11
36°
26°
12
37°
28°
13
37°
31°
14
38°
34°
15
43°
36°
16
46°
35°
17
51°
29°
18
51°
29°
19
38°
27°
20
38°
25°
21
40°
26°
22
34°
24°
23
36°
28°
24
38°
35°
25
44°
38°
26
48°
38°
27
50°
36°
28
51°
34°
29
44°
32°
30
42°
32°
31
42°
31°
1
45°
29°
2
40°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in South Beach
South Beach's December 2026 forecast shows daily high temperatures ranging from 34° to 56°, with overnight lows between 24° and 42°. The average high for December is 43° with an average low of 32°. 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 South Beach. See also: January | February | March.
