S
M
T
W
T
F
S
26
64°
34°
27
66°
41°
28
63°
45°
29
70°
46°
30
68°
50°
1
68°
46°
2
63°
48°
3
63°
50°
4
64°
52°
5
64°
49°
6
61°
46°
7
61°
41°
8
64°
46°
9
72°
41°
10
61°
45°
11
61°
34°
12
63°
34°
13
59°
46°
14
61°
43°
15
57°
39°
16
57°
36°
17
60°
46°
18
55°
48°
19
N/A
20
63°
52°
21
66°
53°
22
69°
55°
23
74°
56°
24
75°
57°
25
73°
54°
26
76°
56°
27
75°
55°
28
72°
53°
29
68°
50°
30
67°
50°
31
68°
51°
1
60°
46°
2
60°
48°
3
62°
52°
4
62°
53°
5
65°
53°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Southbourne
Southbourne's May 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 46° and 57°. The average high for May is 68° with an average low of 53°. 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 Southbourne. See also: June | July | August.