S
M
T
W
T
F
S
26
79°
59°
27
84°
59°
28
71°
65°
29
76°
54°
30
78°
49°
31
83°
56°
1
80°
65°
2
70°
64°
3
76°
58°
4
81°
53°
5
83°
62°
6
76°
57°
7
81°
55°
8
79°
66°
9
77°
54°
10
76°
60°
11
78°
54°
12
78°
57°
13
78°
55°
14
78°
54°
15
81°
59°
16
77°
63°
17
74°
53°
18
79°
53°
19
72°
52°
20
72°
49°
21
77°
49°
22
74°
62°
23
65°
57°
24
68°
57°
25
68°
54°
26
77°
63°
27
69°
54°
28
70°
53°
29
74°
60°
30
77°
67°
31
76°
66°
1
70°
54°
2
76°
61°
3
77°
60°
4
71°
54°
5
70°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Southampton
Southampton's August 2026 forecast shows daily high temperatures ranging from 69° to 77°, with overnight lows between 53° and 67°. The average high for August is 73° with an average low of 59°. 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 Southampton. See also: September | October | November.
