S
M
T
W
T
F
S
26
72°
53°
27
71°
53°
28
71°
51°
29
72°
56°
30
74°
56°
31
75°
54°
1
76°
56°
2
71°
56°
3
74°
54°
4
75°
56°
5
76°
54°
6
76°
54°
7
75°
56°
8
74°
54°
9
72°
52°
10
74°
55°
11
75°
57°
12
76°
56°
13
76°
57°
14
77°
56°
15
77°
57°
16
76°
57°
17
76°
56°
18
73°
54°
19
75°
55°
20
75°
56°
21
74°
55°
22
73°
52°
23
74°
54°
24
70°
54°
25
70°
53°
26
71°
53°
27
70°
52°
28
69°
52°
29
69°
54°
30
70°
54°
31
70°
50°
1
69°
49°
2
68°
53°
3
68°
48°
4
73°
48°
5
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Portishead
Portishead's August 2026 forecast shows daily high temperatures ranging from 68° to 77°, with overnight lows between 48° and 57°. The average high for August is 73° with an average low of 54°. 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 Portishead. See also: September | October | November.
