S
M
T
W
T
F
S
27
80°
67°
28
82°
69°
29
79°
71°
30
81°
70°
1
79°
70°
2
79°
69°
3
80°
69°
4
79°
68°
5
78°
69°
6
81°
68°
7
82°
69°
8
82°
68°
9
83°
67°
10
82°
68°
11
83°
68°
12
82°
67°
13
81°
67°
14
81°
66°
15
80°
66°
16
80°
65°
17
79°
62°
18
80°
59°
19
75°
59°
20
77°
60°
21
74°
60°
22
76°
63°
23
78°
62°
24
79°
57°
25
73°
56°
26
71°
62°
27
72°
63°
28
74°
62°
29
77°
57°
30
75°
60°
31
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sea Island
Sea Island's October 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 56° and 71°. The average high for October is 79° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Sea Island. See also: November | December | January.