S
M
T
W
T
F
S
26
72°
55°
27
73°
56°
28
72°
54°
29
72°
55°
30
74°
55°
31
74°
56°
1
73°
56°
2
76°
58°
3
72°
57°
4
74°
58°
5
76°
60°
6
78°
59°
7
77°
57°
8
73°
57°
9
77°
56°
10
72°
55°
11
76°
56°
12
72°
54°
13
71°
53°
14
71°
54°
15
72°
54°
16
70°
56°
17
70°
56°
18
71°
57°
19
76°
52°
20
71°
55°
21
72°
59°
22
76°
58°
23
75°
58°
24
76°
57°
25
74°
57°
26
70°
56°
27
69°
57°
28
74°
56°
29
71°
52°
30
71°
57°
31
73°
58°
1
74°
51°
2
Hist. Avg.
68°
52°
3
Hist. Avg.
68°
52°
4
Hist. Avg.
67°
51°
5
Hist. Avg.
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Charlottetown
Charlottetown's August 2026 forecast shows daily high temperatures ranging from 69° to 78°, with overnight lows between 51° and 60°. The average high for August is 73° with an average low of 56°. 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 Charlottetown. See also: September | October | November.