S
M
T
W
T
F
S
26
74°
63°
27
76°
60°
28
77°
64°
29
72°
68°
30
69°
62°
31
76°
60°
1
77°
66°
2
82°
69°
3
79°
68°
4
82°
54°
5
81°
50°
6
82°
72°
7
87°
73°
8
83°
71°
9
86°
65°
10
81°
57°
11
82°
65°
12
82°
62°
13
78°
64°
14
80°
58°
15
77°
54°
16
77°
49°
17
71°
63°
18
80°
61°
19
81°
60°
20
83°
58°
21
70°
67°
22
72°
67°
23
78°
67°
24
81°
63°
25
78°
64°
26
77°
63°
27
78°
68°
28
78°
67°
29
79°
62°
30
79°
64°
31
77°
61°
1
76°
59°
2
75°
61°
3
75°
58°
4
74°
57°
5
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oak Bluffs
Oak Bluffs's August 2026 forecast shows daily high temperatures ranging from 74° to 81°, with overnight lows between 57° and 68°. The average high for August is 77° with an average low of 62°. 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 Oak Bluffs. See also: September | October | November.