S
M
T
W
T
F
S
26
77°
61°
27
77°
59°
28
81°
63°
29
90°
57°
30
79°
59°
31
77°
57°
1
75°
54°
2
81°
54°
3
90°
57°
4
82°
63°
5
73°
55°
6
70°
52°
7
75°
50°
8
79°
56°
9
84°
60°
10
80°
59°
11
79°
62°
12
83°
62°
13
85°
64°
14
86°
62°
15
79°
62°
16
77°
61°
17
76°
60°
18
75°
60°
19
73°
59°
20
74°
57°
21
65°
51°
22
69°
57°
23
70°
54°
24
70°
52°
25
69°
54°
26
68°
51°
27
66°
51°
28
66°
50°
29
67°
51°
30
68°
55°
31
65°
53°
1
68°
50°
2
69°
56°
3
70°
56°
4
69°
55°
5
70°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Southbourne
Southbourne's August 2026 forecast shows daily high temperatures ranging from 65° to 86°, with overnight lows between 50° and 64°. The average high for August is 73° 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 August weather will actually feel in Southbourne. See also: September | October | November.