S
M
T
W
T
F
S
26
54°
28°
27
48°
39°
28
50°
32°
29
55°
28°
30
54°
28°
1
55°
27°
2
72°
36°
3
72°
41°
4
59°
37°
5
45°
32°
6
46°
30°
7
63°
27°
8
70°
39°
9
59°
37°
10
59°
34°
11
73°
34°
12
72°
45°
13
79°
41°
14
82°
52°
15
79°
48°
16
64°
45°
17
59°
43°
18
48°
41°
19
52°
37°
20
66°
34°
21
70°
43°
22
54°
46°
23
66°
50°
24
85°
57°
25
89°
58°
26
85°
59°
27
87°
57°
28
85°
59°
29
85°
57°
30
77°
56°
31
77°
52°
1
76°
54°
2
80°
54°
3
81°
55°
4
78°
53°
5
80°
56°
6
74°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lisbon
Lisbon's May 2026 forecast shows daily high temperatures ranging from 74° to 89°, with overnight lows between 51° and 59°. The average high for May is 81° with an average low of 56°. 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 Lisbon. See also: June | July | August.
