S
M
T
W
T
F
S
26
85°
55°
27
88°
64°
28
84°
68°
29
85°
69°
30
79°
66°
31
89°
68°
1
91°
69°
2
88°
73°
3
83°
68°
4
85°
64°
5
81°
75°
6
85°
75°
7
86°
75°
8
87°
73°
9
88°
73°
10
92°
74°
11
94°
71°
12
87°
66°
13
83°
64°
14
83°
66°
15
82°
65°
16
83°
64°
17
82°
63°
18
84°
65°
19
83°
68°
20
85°
67°
21
83°
63°
22
81°
67°
23
85°
68°
24
86°
69°
25
86°
68°
26
84°
67°
27
78°
67°
28
79°
66°
29
82°
66°
30
83°
67°
31
83°
66°
1
82°
64°
2
76°
59°
3
75°
60°
4
75°
59°
5
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Island Beach State Park
Island Beach State Park's August 2026 forecast shows daily high temperatures ranging from 75° to 94°, with overnight lows between 58° and 75°. The average high for August is 83° with an average low of 67°. 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 Island Beach State Park. See also: September | October | November.