S
M
T
W
T
F
S
29
46°
16°
30
66°
28°
31
49°
39°
1
48°
34°
2
47°
37°
3
65°
44°
4
59°
42°
5
52°
34°
6
42°
27°
7
41°
18°
8
49°
27°
9
59°
36°
10
58°
30°
11
66°
40°
12
65°
40°
13
62°
38°
14
62°
36°
15
57°
30°
16
57°
24°
17
48°
24°
18
49°
25°
19
51°
29°
20
60°
37°
21
64°
37°
22
63°
36°
23
53°
36°
24
63°
38°
25
66°
38°
26
60°
37°
27
54°
38°
28
55°
34°
29
55°
36°
30
60°
38°
1
57°
36°
2
58°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lisbon
Lisbon's April 2026 forecast shows daily high temperatures ranging from 41° to 66°, with overnight lows between 18° and 44°. The average high for April is 57° with an average low of 34°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Lisbon. See also: May | June | July.