S
M
T
W
T
F
S
26
52°
42°
27
64°
38°
28
64°
42°
29
59°
46°
30
55°
48°
1
63°
41°
2
59°
49°
3
59°
43°
4
68°
43°
5
71°
50°
6
61°
55°
7
64°
49°
8
62°
47°
9
60°
51°
10
62°
52°
11
62°
53°
12
64°
45°
13
67°
51°
14
61°
54°
15
65°
48°
16
75°
56°
17
83°
55°
18
76°
59°
19
86°
65°
20
85°
59°
21
68°
49°
22
66°
52°
23
69°
55°
24
70°
54°
25
72°
59°
26
73°
58°
27
75°
60°
28
73°
54°
29
67°
54°
30
68°
59°
31
74°
58°
1
69°
56°
2
70°
56°
3
69°
55°
4
69°
53°
5
70°
60°
6
73°
61°
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 65° to 86°, with overnight lows between 48° and 65°. The average high for May is 72° with an average low of 56°. 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.