S
M
T
W
T
F
S
26
66°
49°
27
77°
60°
28
72°
49°
29
62°
40°
30
56°
38°
1
52°
37°
2
56°
38°
3
60°
44°
4
64°
45°
5
61°
45°
6
60°
46°
7
65°
50°
8
64°
46°
9
66°
47°
10
63°
48°
11
64°
48°
12
69°
50°
13
67°
45°
14
63°
44°
15
64°
44°
16
64°
45°
17
65°
46°
18
71°
56°
19
73°
52°
20
71°
48°
21
67°
50°
22
69°
48°
23
71°
53°
24
77°
59°
25
78°
57°
26
71°
52°
27
69°
51°
28
72°
54°
29
78°
57°
30
79°
59°
31
79°
61°
1
80°
61°
2
81°
62°
3
81°
62°
4
80°
60°
5
74°
55°
6
79°
62°
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 52° to 81°, with overnight lows between 37° and 62°. The average high for May is 69° with an average low of 51°. 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.