S
M
T
W
T
F
S
26
81°
48°
27
79°
55°
28
80°
71°
29
77°
66°
30
75°
63°
31
83°
58°
1
79°
69°
2
78°
71°
3
77°
72°
4
82°
70°
5
81°
72°
6
84°
68°
7
84°
68°
8
86°
69°
9
85°
67°
10
85°
64°
11
84°
65°
12
83°
63°
13
81°
63°
14
79°
62°
15
78°
61°
16
77°
59°
17
78°
64°
18
77°
61°
19
77°
65°
20
78°
62°
21
77°
59°
22
76°
63°
23
80°
65°
24
82°
65°
25
82°
64°
26
76°
63°
27
75°
64°
28
75°
64°
29
78°
63°
30
80°
64°
31
79°
63°
1
80°
59°
2
73°
56°
3
72°
58°
4
72°
57°
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 72° to 86°, with overnight lows between 55° and 72°. The average high for August is 79° with an average low of 64°. 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.
