S
M
T
W
T
F
S
26
49°
41°
27
66°
36°
28
64°
36°
29
68°
51°
30
70°
50°
1
68°
45°
2
61°
45°
3
60°
43°
4
76°
44°
5
84°
60°
6
74°
62°
7
66°
47°
8
69°
47°
9
74°
53°
10
84°
51°
11
63°
43°
12
69°
45°
13
76°
51°
14
65°
54°
15
70°
49°
16
83°
48°
17
87°
65°
18
96°
61°
19
95°
69°
20
96°
72°
21
74°
57°
22
61°
55°
23
57°
54°
24
66°
57°
25
75°
59°
26
79°
67°
27
80°
66°
28
80°
61°
29
78°
54°
30
70°
49°
31
77°
44°
1
77°
54°
2
75°
51°
3
82°
50°
4
88°
52°
5
92°
61°
6
92°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rehoboth Beach
Rehoboth Beach's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Rehoboth Beach. See also: June | July | August.