S
M
T
W
T
F
S
26
64°
52°
27
57°
50°
28
55°
49°
29
59°
49°
30
62°
52°
1
61°
54°
2
66°
54°
3
68°
56°
4
73°
58°
5
62°
56°
6
58°
54°
7
61°
52°
8
60°
54°
9
61°
52°
10
64°
54°
11
62°
55°
12
67°
54°
13
65°
58°
14
60°
53°
15
56°
50°
16
58°
48°
17
60°
51°
18
60°
53°
19
64°
54°
20
62°
52°
21
67°
53°
22
67°
55°
23
64°
55°
24
62°
54°
25
61°
54°
26
64°
51°
27
78°
53°
28
74°
52°
29
63°
50°
30
64°
49°
31
67°
51°
1
70°
57°
2
73°
60°
3
70°
55°
4
64°
52°
5
65°
52°
6
64°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Halfmoon Bay
Halfmoon Bay's May 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 49° and 60°. The average high for May is 68° with an average low of 53°. 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 Bay. See also: June | July | August.
