S
M
T
W
T
F
S
26
70°
55°
27
71°
56°
28
72°
55°
29
73°
56°
30
75°
57°
31
75°
57°
1
76°
56°
2
76°
56°
3
72°
55°
4
73°
56°
5
76°
56°
6
74°
55°
7
69°
54°
8
69°
53°
9
70°
55°
10
69°
55°
11
70°
54°
12
72°
55°
13
73°
54°
14
72°
54°
15
76°
49°
16
75°
52°
17
71°
54°
18
72°
53°
19
75°
52°
20
76°
50°
21
70°
49°
22
71°
48°
23
67°
51°
24
72°
51°
25
74°
47°
26
71°
46°
27
66°
45°
28
67°
44°
29
65°
44°
30
65°
43°
31
64°
43°
1
63°
44°
2
64°
41°
3
65°
45°
4
66°
45°
5
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cap-aux-Os
Cap-aux-Os's August 2026 forecast shows daily high temperatures ranging from 63° to 76°, with overnight lows between 41° and 57°. The average high for August is 71° with an average low of 51°. 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 Cap-aux-Os. See also: September | October | November.