S
M
T
W
T
F
S
26
60°
35°
27
71°
30°
28
63°
51°
29
56°
47°
30
55°
37°
1
51°
30°
2
51°
35°
3
57°
34°
4
74°
42°
5
75°
49°
6
50°
44°
7
57°
32°
8
58°
32°
9
61°
43°
10
65°
34°
11
57°
29°
12
64°
25°
13
67°
45°
14
49°
44°
15
68°
40°
16
80°
33°
17
85°
49°
18
90°
65°
19
88°
66°
20
76°
41°
21
60°
41°
22
63°
46°
23
59°
49°
24
65°
48°
25
72°
52°
26
74°
51°
27
71°
51°
28
74°
53°
29
75°
51°
30
74°
52°
31
76°
48°
1
70°
48°
2
70°
53°
3
69°
53°
4
72°
52°
5
70°
51°
6
73°
54°
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 59° to 90°, with overnight lows between 41° and 66°. The average high for May is 72° 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 Southport. See also: June | July | August.