S
M
T
W
T
F
S
26
82°
65°
27
81°
67°
28
84°
67°
29
84°
66°
30
85°
67°
31
82°
67°
1
82°
66°
2
81°
67°
3
83°
67°
4
82°
66°
5
83°
66°
6
80°
65°
7
82°
67°
8
83°
62°
9
77°
60°
10
77°
60°
11
78°
65°
12
78°
64°
13
79°
65°
14
78°
66°
15
78°
66°
16
80°
64°
17
81°
59°
18
78°
57°
19
77°
61°
20
78°
62°
21
77°
63°
22
82°
61°
23
81°
61°
24
79°
58°
25
75°
57°
26
76°
58°
27
75°
57°
28
74°
56°
29
76°
57°
30
76°
62°
31
79°
63°
1
81°
63°
2
81°
62°
3
80°
56°
4
80°
54°
5
73°
55°
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 73° to 85°, with overnight lows between 54° and 67°. The average high for August is 79° with an average low of 62°. 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.
