S
M
T
W
T
F
S
26
79°
63°
27
81°
57°
28
81°
61°
29
90°
59°
30
82°
61°
31
79°
64°
1
N/A
2
78°
59°
3
79°
62°
4
73°
62°
5
70°
56°
6
71°
54°
7
72°
59°
8
73°
60°
9
74°
58°
10
74°
60°
11
75°
62°
12
75°
62°
13
74°
60°
14
73°
60°
15
70°
59°
16
69°
58°
17
68°
57°
18
67°
56°
19
65°
53°
20
65°
53°
21
64°
52°
22
65°
52°
23
65°
53°
24
68°
58°
25
70°
58°
26
70°
56°
27
69°
57°
28
70°
57°
29
69°
56°
30
70°
57°
31
71°
57°
1
69°
55°
2
68°
52°
3
64°
51°
4
64°
51°
5
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Portslade-by-Sea
Portslade-by-Sea's August 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 51° and 62°. The average high for August is 70° with an average low of 57°. 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 Portslade-by-Sea. See also: September | October | November.
