S
M
T
W
T
F
S
26
68°
55°
27
66°
57°
28
68°
56°
29
67°
56°
30
66°
54°
31
68°
56°
1
67°
57°
2
68°
56°
3
68°
56°
4
67°
55°
5
68°
57°
6
68°
56°
7
67°
56°
8
67°
55°
9
66°
57°
10
67°
56°
11
67°
56°
12
66°
55°
13
67°
56°
14
67°
53°
15
64°
56°
16
65°
56°
17
67°
52°
18
67°
51°
19
65°
53°
20
65°
52°
21
63°
56°
22
63°
57°
23
66°
57°
24
66°
56°
25
65°
54°
26
64°
52°
27
62°
51°
28
63°
53°
29
64°
54°
30
64°
55°
31
65°
54°
1
64°
55°
2
67°
55°
3
68°
54°
4
65°
53°
5
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Half Moon Bay
Half Moon Bay's August 2026 forecast shows daily high temperatures ranging from 62° to 68°, with overnight lows between 50° and 57°. The average high for August is 66° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Half Moon Bay. See also: September | October | November.
