S
M
T
W
T
F
S
26
65°
56°
27
70°
56°
28
75°
56°
29
72°
56°
30
70°
55°
31
75°
52°
1
72°
57°
2
69°
53°
3
77°
51°
4
76°
55°
5
80°
52°
6
79°
54°
7
74°
53°
8
71°
54°
9
76°
53°
10
73°
54°
11
75°
56°
12
75°
55°
13
76°
57°
14
74°
58°
15
72°
54°
16
71°
54°
17
69°
53°
18
70°
55°
19
71°
53°
20
70°
53°
21
71°
54°
22
70°
49°
23
66°
52°
24
73°
53°
25
74°
52°
26
72°
53°
27
72°
53°
28
69°
52°
29
68°
52°
30
66°
52°
31
67°
52°
1
65°
53°
2
65°
52°
3
69°
52°
4
72°
53°
5
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brentwood Bay
Brentwood Bay's August 2026 forecast shows daily high temperatures ranging from 65° to 76°, with overnight lows between 49° and 58°. The average high for August is 71° 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 August weather will actually feel in Brentwood Bay. See also: September | October | November.