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