S
M
T
W
T
F
S
29
63°
50°
30
64°
43°
1
60°
43°
2
59°
46°
3
59°
43°
4
60°
47°
5
59°
48°
6
60°
43°
7
62°
43°
8
59°
44°
9
58°
49°
10
61°
51°
11
64°
49°
12
65°
50°
13
64°
48°
14
65°
45°
15
63°
48°
16
63°
49°
17
64°
48°
18
63°
49°
19
63°
45°
20
61°
41°
21
58°
40°
22
57°
41°
23
56°
41°
24
56°
40°
25
56°
42°
26
56°
43°
27
57°
44°
28
58°
48°
29
61°
47°
30
62°
43°
31
62°
42°
1
58°
44°
2
59°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Barcelona
Barcelona's December 2026 forecast shows daily high temperatures ranging from 56° to 65°, with overnight lows between 40° and 51°. The average high for December is 60° with an average low of 45°. 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 Barcelona. See also: January | February | March.
