S
M
T
W
T
F
S
26
74°
54°
27
66°
52°
28
72°
45°
29
74°
58°
30
72°
56°
1
67°
52°
2
62°
52°
3
70°
46°
4
74°
49°
5
77°
57°
6
79°
67°
7
74°
59°
8
71°
52°
9
75°
59°
10
77°
66°
11
77°
57°
12
69°
52°
13
77°
57°
14
82°
59°
15
72°
48°
16
78°
59°
17
82°
66°
18
83°
71°
19
82°
63°
20
83°
67°
21
83°
68°
22
83°
72°
23
85°
75°
24
83°
74°
25
85°
76°
26
86°
77°
27
86°
77°
28
88°
70°
29
82°
72°
30
79°
64°
31
75°
64°
1
77°
63°
2
84°
61°
3
83°
63°
4
81°
66°
5
82°
67°
6
81°
69°
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 75° to 88°, with overnight lows between 61° and 72°. The average high for May is 81° with an average low of 66°. 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.