S
M
T
W
T
F
S
26
65°
49°
27
78°
49°
28
73°
57°
29
71°
53°
30
69°
52°
31
60°
54°
1
59°
53°
2
65°
53°
3
68°
54°
4
73°
57°
5
69°
54°
6
66°
53°
7
67°
52°
8
69°
52°
9
77°
51°
10
70°
53°
11
70°
58°
12
67°
54°
13
64°
53°
14
71°
55°
15
64°
53°
16
65°
48°
17
65°
57°
18
64°
58°
19
65°
57°
20
64°
55°
21
66°
50°
22
65°
54°
23
67°
53°
24
64°
52°
25
66°
51°
26
63°
51°
27
62°
49°
28
64°
51°
29
65°
50°
30
62°
46°
31
58°
53°
1
57°
52°
2
59°
49°
3
59°
48°
4
56°
52°
5
61°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Blanc-Sablon
Blanc-Sablon's August 2026 forecast shows daily high temperatures ranging from 56° to 67°, with overnight lows between 46° and 58°. The average high for August is 63° with an average low of 52°. 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 Blanc-Sablon. See also: September | October | November.