S
M
T
W
T
F
S
26
60°
53°
27
60°
48°
28
60°
48°
29
61°
48°
30
61°
43°
1
60°
54°
2
58°
54°
3
61°
54°
4
62°
52°
5
62°
60°
6
62°
53°
7
59°
54°
8
60°
54°
9
58°
54°
10
59°
52°
11
60°
52°
12
57°
50°
13
60°
55°
14
61°
46°
15
60°
47°
16
60°
52°
17
59°
44°
18
73°
46°
19
66°
40°
20
62°
42°
21
57°
49°
22
59°
50°
23
61°
54°
24
63°
54°
25
59°
54°
26
63°
53°
27
59°
50°
28
60°
53°
29
61°
50°
30
59°
46°
31
59°
45°
1
60°
44°
2
60°
53°
3
62°
54°
4
64°
54°
5
61°
47°
6
60°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Half Moon Bay
Half Moon Bay's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Half Moon Bay. See also: June | July | August.
