S
M
T
W
T
F
S
26
60°
40°
27
72°
40°
28
64°
41°
29
67°
49°
30
61°
44°
1
64°
48°
2
60°
43°
3
60°
39°
4
68°
51°
5
75°
56°
6
72°
53°
7
63°
48°
8
59°
44°
9
62°
49°
10
63°
48°
11
65°
48°
12
65°
49°
13
66°
50°
14
66°
48°
15
66°
53°
16
67°
52°
17
67°
52°
18
68°
57°
19
75°
57°
20
74°
56°
21
70°
57°
22
76°
55°
23
72°
55°
24
76°
56°
25
70°
51°
26
69°
54°
27
69°
58°
28
73°
60°
29
77°
60°
30
76°
59°
31
76°
58°
1
73°
53°
2
69°
53°
3
69°
54°
4
71°
53°
5
71°
54°
6
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Southampton
Southampton's May 2026 forecast shows daily high temperatures ranging from 59° to 77°, with overnight lows between 39° and 60°. The average high for May is 69° with an average low of 52°. 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 Southampton. See also: June | July | August.
