S
M
T
W
T
F
S
26
79°
63°
27
80°
61°
28
78°
60°
29
79°
57°
30
79°
61°
1
75°
59°
2
76°
61°
3
74°
57°
4
74°
57°
5
75°
58°
6
74°
57°
7
75°
58°
8
76°
64°
9
82°
65°
10
83°
66°
11
80°
65°
12
77°
59°
13
75°
58°
14
76°
60°
15
78°
65°
16
80°
64°
17
79°
67°
18
82°
68°
19
78°
68°
20
79°
67°
21
79°
68°
22
82°
69°
23
85°
69°
24
85°
70°
25
84°
70°
26
85°
69°
27
86°
70°
28
86°
69°
29
86°
69°
30
87°
70°
31
86°
69°
1
87°
66°
2
86°
67°
3
82°
68°
4
82°
69°
5
83°
71°
6
86°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hilton Head Airport
Hilton Head Airport's May 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 57° and 71°. The average high for May is 80° 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 May weather will actually feel in Hilton Head Airport. See also: June | July | August.
