S
M
T
W
T
F
S
26
79°
55°
27
77°
58°
28
78°
61°
29
77°
62°
30
85°
62°
31
84°
61°
1
83°
62°
2
84°
63°
3
83°
61°
4
82°
60°
5
81°
61°
6
82°
60°
7
80°
61°
8
81°
62°
9
Hist. Avg.
78°
58°
10
Hist. Avg.
78°
58°
11
Hist. Avg.
78°
57°
12
Hist. Avg.
78°
57°
13
Hist. Avg.
78°
57°
14
Hist. Avg.
78°
57°
15
Hist. Avg.
77°
57°
16
Hist. Avg.
77°
57°
17
Hist. Avg.
77°
56°
18
Hist. Avg.
77°
56°
19
Hist. Avg.
77°
56°
20
Hist. Avg.
77°
56°
21
Hist. Avg.
77°
56°
22
Hist. Avg.
76°
56°
23
Hist. Avg.
76°
55°
24
Hist. Avg.
76°
55°
25
Hist. Avg.
76°
55°
26
Hist. Avg.
76°
55°
27
Hist. Avg.
76°
55°
28
Hist. Avg.
75°
54°
29
Hist. Avg.
75°
54°
30
Hist. Avg.
75°
54°
31
Hist. Avg.
74°
54°
1
Hist. Avg.
74°
54°
2
Hist. Avg.
74°
53°
3
Hist. Avg.
74°
53°
4
Hist. Avg.
73°
53°
5
Hist. Avg.
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Bar Harbor
Bar Harbor's August 2026 forecast shows daily high temperatures ranging from 77° to 85°, with overnight lows between 55° and 63°. The average high for August is 81° with an average low of 61°. 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 Bar Harbor. See also: September | October | November.
