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