S
M
T
W
T
F
S
26
85°
70°
27
83°
71°
28
86°
72°
29
86°
72°
30
85°
71°
31
84°
71°
1
85°
72°
2
83°
71°
3
85°
71°
4
84°
70°
5
85°
70°
6
82°
69°
7
84°
71°
8
85°
66°
9
78°
64°
10
78°
64°
11
78°
69°
12
79°
70°
13
80°
70°
14
80°
69°
15
81°
70°
16
82°
69°
17
81°
63°
18
79°
62°
19
79°
68°
20
80°
66°
21
79°
67°
22
84°
66°
23
82°
66°
24
82°
62°
25
76°
62°
26
77°
63°
27
76°
61°
28
75°
61°
29
77°
62°
30
77°
64°
31
81°
67°
1
82°
67°
2
82°
66°
3
81°
60°
4
81°
58°
5
75°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gilgo Beach
Gilgo Beach's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 58° and 72°. The average high for August is 81° 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 Gilgo Beach. See also: September | October | November.