S
M
T
W
T
F
S
26
77°
59°
27
84°
52°
28
79°
57°
29
77°
63°
30
68°
50°
1
72°
48°
2
64°
48°
3
66°
41°
4
79°
41°
5
81°
48°
6
77°
63°
7
63°
50°
8
72°
43°
9
77°
46°
10
82°
50°
11
70°
54°
12
77°
48°
13
81°
52°
14
68°
46°
15
77°
39°
16
86°
52°
17
90°
57°
18
91°
63°
19
88°
61°
20
91°
63°
21
77°
66°
22
81°
68°
23
79°
64°
24
77°
65°
25
74°
64°
26
76°
67°
27
80°
66°
28
83°
61°
29
77°
62°
30
73°
58°
31
74°
56°
1
73°
57°
2
75°
57°
3
76°
58°
4
76°
57°
5
80°
58°
6
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bluffton
Bluffton's May 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 56° and 67°. The average high for May is 77° with an average low of 60°. 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 Bluffton. See also: June | July | August.