S
M
T
W
T
F
S
26
65°
31°
27
73°
37°
28
69°
46°
29
56°
46°
30
49°
39°
1
53°
31°
2
48°
36°
3
54°
38°
4
67°
45°
5
70°
44°
6
48°
42°
7
53°
37°
8
53°
35°
9
65°
37°
10
57°
39°
11
53°
33°
12
58°
34°
13
56°
44°
14
53°
43°
15
60°
47°
16
70°
45°
17
77°
54°
18
85°
53°
19
N/A
20
73°
41°
21
60°
36°
22
66°
44°
23
64°
47°
24
66°
54°
25
67°
52°
26
73°
50°
27
77°
55°
28
77°
52°
29
72°
53°
30
72°
54°
31
72°
56°
1
74°
52°
2
75°
60°
3
76°
57°
4
77°
58°
5
76°
59°
6
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Lisbon
Lisbon's May 2026 forecast shows daily high temperatures ranging from 60° to 77°, with overnight lows between 36° and 60°. The average high for May is 72° with an average low of 52°. 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.
