S
M
T
W
T
F
S
26
57°
37°
27
52°
50°
28
55°
46°
29
55°
37°
30
55°
43°
1
54°
50°
2
55°
45°
3
66°
43°
4
59°
52°
5
57°
52°
6
55°
52°
7
55°
50°
8
57°
43°
9
63°
43°
10
59°
52°
11
61°
45°
12
61°
45°
13
61°
50°
14
59°
50°
15
55°
41°
16
55°
45°
17
57°
41°
18
57°
41°
19
59°
41°
20
57°
45°
21
57°
41°
22
57°
41°
23
57°
46°
24
59°
39°
25
55°
45°
26
59°
46°
27
59°
50°
28
57°
52°
29
57°
41°
30
58°
45°
31
60°
46°
1
64°
47°
2
65°
50°
3
59°
50°
4
62°
48°
5
60°
49°
6
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Beach
South Beach's May 2026 forecast shows daily high temperatures ranging from 57° to 65°, with overnight lows between 45° and 50°. The average high for May is 61° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in South Beach. See also: June | July | August.