S
M
T
W
T
F
S
26
87°
75°
27
88°
76°
28
89°
74°
29
89°
74°
30
88°
73°
31
89°
73°
1
89°
74°
2
88°
76°
3
90°
74°
4
89°
74°
5
89°
73°
6
88°
73°
7
89°
74°
8
88°
74°
9
89°
73°
10
90°
74°
11
89°
73°
12
90°
76°
13
90°
74°
14
89°
75°
15
89°
74°
16
90°
74°
17
89°
76°
18
90°
75°
19
90°
76°
20
89°
75°
21
90°
75°
22
89°
76°
23
89°
75°
24
90°
74°
25
89°
75°
26
88°
73°
27
89°
74°
28
88°
74°
29
88°
75°
30
89°
75°
31
90°
74°
1
90°
74°
2
91°
75°
3
89°
74°
4
90°
75°
5
89°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brazil
Brazil's August 2026 forecast shows daily high temperatures ranging from 87° to 91°, with overnight lows between 73° and 76°. The average high for August is 89° with an average low of 74°. 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 Brazil. See also: September | October | November.