S
M
T
W
T
F
S
26
83°
53°
27
80°
51°
28
82°
52°
29
83°
56°
30
68°
61°
31
70°
60°
1
71°
60°
2
83°
59°
3
81°
63°
4
82°
63°
5
90°
63°
6
92°
64°
7
91°
65°
8
81°
67°
9
77°
62°
10
83°
60°
11
79°
58°
12
81°
56°
13
82°
58°
14
80°
56°
15
76°
55°
16
75°
54°
17
76°
55°
18
74°
53°
19
71°
55°
20
74°
56°
21
72°
55°
22
71°
56°
23
75°
57°
24
76°
56°
25
75°
55°
26
71°
54°
27
70°
55°
28
70°
55°
29
71°
57°
30
74°
56°
31
74°
55°
1
73°
54°
2
67°
53°
3
67°
53°
4
69°
52°
5
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cape Breton
Cape Breton's August 2026 forecast shows daily high temperatures ranging from 67° to 92°, with overnight lows between 52° and 67°. The average high for August is 76° with an average low of 57°. 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 Cape Breton. See also: September | October | November.