S
M
T
W
T
F
S
26
90°
67°
27
82°
66°
28
82°
64°
29
84°
64°
30
90°
67°
1
90°
67°
2
93°
68°
3
74°
69°
4
79°
70°
5
81°
72°
6
86°
64°
7
93°
62°
8
86°
62°
9
92°
70°
10
92°
71°
11
92°
71°
12
86°
72°
13
92°
73°
14
86°
68°
15
87°
72°
16
88°
72°
17
88°
73°
18
87°
72°
19
88°
72°
20
87°
71°
21
86°
70°
22
87°
73°
23
86°
71°
24
86°
72°
25
87°
74°
26
85°
73°
27
88°
71°
28
87°
70°
29
88°
72°
30
89°
72°
31
89°
71°
1
88°
72°
2
86°
72°
3
87°
71°
4
86°
72°
5
85°
73°
6
85°
73°
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 85° to 89°, with overnight lows between 68° and 74°. The average high for May is 87° with an average low of 72°. 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.