S
M
T
W
T
F
S
26
77°
56°
27
80°
60°
28
80°
60°
29
74°
58°
30
71°
56°
31
71°
55°
1
72°
59°
2
72°
56°
3
75°
57°
4
73°
56°
5
75°
57°
6
79°
60°
7
78°
60°
8
78°
59°
9
80°
60°
10
80°
61°
11
81°
60°
12
81°
61°
13
80°
61°
14
80°
60°
15
79°
60°
16
80°
60°
17
80°
60°
18
79°
60°
19
80°
61°
20
80°
61°
21
79°
60°
22
80°
60°
23
79°
59°
24
77°
52°
25
75°
59°
26
78°
59°
27
79°
60°
28
81°
59°
29
80°
54°
30
80°
60°
31
79°
59°
1
78°
57°
2
78°
53°
3
77°
50°
4
79°
51°
5
76°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bainbridge Island
Bainbridge Island's August 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 50° and 61°. The average high for August is 78° with an average low of 58°. 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 Bainbridge Island. See also: September | October | November.