S
M
T
W
T
F
S
26
90°
72°
27
90°
72°
28
89°
71°
29
87°
72°
30
88°
68°
31
83°
66°
1
83°
66°
2
84°
69°
3
84°
71°
4
85°
68°
5
85°
66°
6
86°
71°
7
89°
71°
8
87°
70°
9
86°
70°
10
86°
65°
11
85°
64°
12
85°
65°
13
84°
70°
14
89°
71°
15
88°
70°
16
90°
72°
17
91°
71°
18
90°
68°
19
88°
63°
20
83°
63°
21
81°
64°
22
81°
62°
23
82°
62°
24
82°
63°
25
83°
62°
26
83°
62°
27
84°
63°
28
82°
63°
29
83°
62°
30
80°
62°
31
83°
65°
1
85°
62°
2
86°
61°
3
79°
60°
4
80°
61°
5
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Riviera Beach
Riviera Beach's August 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 60° and 72°. The average high for August is 85° with an average low of 66°. 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 Riviera Beach. See also: September | October | November.
