S
M
T
W
T
F
S
26
69°
50°
27
69°
54°
28
67°
57°
29
64°
46°
30
61°
38°
1
55°
43°
2
54°
39°
3
64°
36°
4
75°
51°
5
64°
47°
6
58°
44°
7
62°
37°
8
66°
48°
9
75°
50°
10
68°
53°
11
72°
45°
12
76°
44°
13
66°
48°
14
66°
40°
15
69°
47°
16
75°
58°
17
83°
62°
18
84°
67°
19
85°
65°
20
71°
59°
21
68°
53°
22
63°
57°
23
73°
60°
24
76°
61°
25
79°
64°
26
80°
66°
27
78°
62°
28
80°
57°
29
79°
56°
30
72°
55°
31
75°
56°
1
79°
62°
2
78°
62°
3
79°
61°
4
78°
58°
5
76°
61°
6
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Southport
Southport's May 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 55° and 66°. The average high for May is 76° 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 Southport. See also: June | July | August.