S
M
T
W
T
F
S
27
68°
55°
28
72°
54°
29
66°
57°
30
72°
61°
31
66°
63°
1
70°
57°
2
68°
52°
3
72°
50°
4
68°
61°
5
68°
54°
6
72°
50°
7
70°
48°
8
70°
55°
9
72°
50°
10
77°
61°
11
81°
59°
12
70°
61°
13
72°
61°
14
75°
59°
15
81°
59°
16
86°
64°
17
86°
63°
18
77°
63°
19
68°
61°
20
66°
59°
21
68°
52°
22
70°
50°
23
77°
48°
24
81°
50°
25
81°
57°
26
72°
61°
27
66°
52°
28
64°
52°
29
68°
57°
30
66°
57°
31
66°
55°
1
66°
57°
2
66°
59°
3
66°
61°
4
66°
52°
5
68°
50°
6
77°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brest
Brest's August 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August 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 August weather will actually feel in Brest. See also: September | October | November.