S
M
T
W
T
F
S
29
73°
43°
30
64°
48°
31
61°
55°
1
64°
56°
2
59°
45°
3
72°
39°
4
77°
45°
5
73°
46°
6
64°
51°
7
59°
53°
8
62°
49°
9
62°
53°
10
64°
57°
11
63°
54°
12
59°
51°
13
60°
48°
14
60°
55°
15
60°
51°
16
65°
45°
17
68°
44°
18
61°
41°
19
61°
48°
20
67°
47°
21
61°
53°
22
62°
49°
23
62°
45°
24
62°
54°
25
57°
54°
26
60°
53°
27
60°
48°
28
60°
48°
29
61°
48°
30
61°
43°
1
60°
54°
2
58°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Half Moon Bay
Half Moon Bay's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April 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 April weather will actually feel in Half Moon Bay. See also: May | June | July.