S
M
T
W
T
F
S
26
86°
67°
27
85°
69°
28
87°
70°
29
87°
70°
30
86°
69°
31
86°
70°
1
87°
69°
2
85°
70°
3
86°
70°
4
87°
69°
5
86°
69°
6
86°
68°
7
85°
69°
8
87°
65°
9
80°
63°
10
79°
62°
11
80°
66°
12
81°
67°
13
82°
67°
14
84°
69°
15
85°
68°
16
83°
65°
17
84°
61°
18
80°
60°
19
80°
67°
20
83°
66°
21
85°
67°
22
84°
66°
23
85°
66°
24
85°
61°
25
79°
61°
26
78°
60°
27
77°
60°
28
76°
59°
29
78°
59°
30
78°
62°
31
80°
65°
1
83°
65°
2
84°
64°
3
84°
58°
4
82°
56°
5
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 87°, with overnight lows between 56° and 70°. The average high for August is 83° with an average low of 65°. 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.
