S
M
T
W
T
F
S
26
64°
45°
27
66°
48°
28
54°
43°
29
66°
39°
30
72°
43°
1
59°
48°
2
61°
46°
3
61°
48°
4
59°
50°
5
59°
48°
6
57°
45°
7
57°
43°
8
64°
46°
9
66°
43°
10
55°
39°
11
54°
39°
12
57°
41°
13
57°
43°
14
52°
43°
15
55°
41°
16
54°
43°
17
54°
45°
18
54°
45°
19
61°
52°
20
57°
52°
21
70°
54°
22
75°
55°
23
68°
52°
24
81°
50°
25
N/A
26
92°
62°
27
90°
58°
28
82°
57°
29
73°
56°
30
71°
55°
31
68°
56°
1
70°
53°
2
66°
49°
3
65°
50°
4
65°
49°
5
66°
50°
6
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Portishead
Portishead's May 2026 forecast shows daily high temperatures ranging from 65° to 92°, with overnight lows between 49° and 62°. The average high for May 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 May weather will actually feel in Portishead. See also: June | July | August.
