S
M
T
W
T
F
S
26
76°
56°
27
77°
55°
28
74°
57°
29
75°
54°
30
74°
57°
31
78°
56°
1
74°
50°
2
78°
50°
3
76°
51°
4
72°
50°
5
72°
51°
6
71°
51°
7
72°
56°
8
77°
53°
9
76°
56°
10
78°
57°
11
72°
51°
12
78°
55°
13
77°
54°
14
70°
56°
15
78°
49°
16
73°
51°
17
73°
48°
18
69°
47°
19
70°
49°
20
70°
48°
21
71°
50°
22
69°
52°
23
69°
49°
24
73°
54°
25
75°
48°
26
72°
49°
27
70°
47°
28
68°
45°
29
67°
48°
30
67°
47°
31
66°
46°
1
67°
45°
2
66°
43°
3
66°
48°
4
67°
44°
5
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Carleton-sur-Mer
Carleton-sur-Mer's August 2026 forecast shows daily high temperatures ranging from 66° to 78°, with overnight lows between 43° and 57°. The average high for August is 72° 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 Carleton-sur-Mer. See also: September | October | November.