S
M
T
W
T
F
S
26
81°
66°
27
64°
57°
28
75°
63°
29
77°
64°
30
75°
66°
1
72°
66°
2
66°
55°
3
68°
50°
4
73°
52°
5
75°
57°
6
81°
66°
7
84°
72°
8
73°
64°
9
81°
64°
10
79°
68°
11
88°
72°
12
70°
64°
13
77°
64°
14
84°
66°
15
72°
59°
16
79°
61°
17
84°
72°
18
82°
68°
19
81°
68°
20
83°
69°
21
83°
71°
22
82°
74°
23
83°
74°
24
83°
72°
25
85°
73°
26
86°
71°
27
84°
72°
28
85°
71°
29
84°
71°
30
83°
70°
31
84°
69°
1
83°
69°
2
82°
68°
3
82°
70°
4
83°
69°
5
82°
71°
6
82°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hilton Head Plantation
Hilton Head Plantation's May 2026 forecast shows daily high temperatures ranging from 82° to 86°, with overnight lows between 68° and 74°. The average high for May is 83° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Hilton Head Plantation. See also: June | July | August.