S
M
T
W
T
F
S
26
83°
70°
27
83°
72°
28
84°
73°
29
86°
72°
30
82°
72°
31
82°
71°
1
83°
72°
2
82°
72°
3
82°
73°
4
85°
73°
5
86°
72°
6
82°
70°
7
81°
72°
8
86°
71°
9
82°
72°
10
86°
72°
11
83°
71°
12
82°
72°
13
82°
72°
14
84°
71°
15
81°
70°
16
80°
70°
17
80°
71°
18
81°
72°
19
81°
72°
20
82°
71°
21
83°
71°
22
81°
70°
23
83°
71°
24
86°
70°
25
85°
71°
26
84°
70°
27
85°
68°
28
82°
69°
29
79°
66°
30
84°
63°
31
78°
64°
1
77°
68°
2
78°
69°
3
83°
69°
4
83°
68°
5
82°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sea Dunes
Sea Dunes's August 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 63° and 73°. The average high for August is 82° with an average low of 70°. 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 Sea Dunes. See also: September | October | November.
