S
M
T
W
T
F
S
26
67°
40°
27
75°
39°
28
70°
49°
29
68°
48°
30
59°
46°
1
61°
41°
2
56°
37°
3
54°
43°
4
71°
53°
5
79°
57°
6
62°
42°
7
59°
41°
8
57°
42°
9
58°
43°
10
61°
42°
11
64°
45°
12
66°
49°
13
67°
48°
14
68°
52°
15
66°
51°
16
67°
49°
17
74°
54°
18
76°
54°
19
74°
53°
20
72°
55°
21
75°
54°
22
72°
55°
23
68°
47°
24
66°
48°
25
68°
48°
26
69°
51°
27
70°
49°
28
69°
49°
29
69°
50°
30
70°
50°
31
71°
58°
1
72°
51°
2
71°
52°
3
72°
56°
4
75°
57°
5
73°
54°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Halfmoon Beach
Halfmoon Beach's May 2026 forecast shows daily high temperatures ranging from 54° to 79°, with overnight lows between 41° and 60°. The average high for May is 69° with an average low of 50°. 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 Halfmoon Beach. See also: June | July | August.