S
M
T
W
T
F
S
29
38°
28°
30
39°
26°
1
39°
29°
2
40°
23°
3
37°
21°
4
35°
26°
5
35°
30°
6
40°
36°
7
47°
31°
8
52°
27°
9
51°
25°
10
35°
24°
11
36°
23°
12
38°
22°
13
35°
25°
14
36°
23°
15
33°
23°
16
32°
22°
17
32°
22°
18
34°
26°
19
34°
29°
20
37°
31°
21
46°
24°
22
47°
25°
23
37°
32°
24
43°
29°
25
47°
28°
26
41°
26°
27
38°
19°
28
40°
16°
29
31°
17°
30
30°
10°
31
31°
11°
1
24°
13°
2
28°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Lisbon
Lisbon's December 2026 forecast shows daily high temperatures ranging from 24° to 52°, with overnight lows between 10° and 36°. The average high for December is 38° with an average low of 24°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Lisbon. See also: January | February | March.
