S
M
T
W
T
F
S
26
85°
71°
27
84°
70°
28
84°
71°
29
85°
70°
30
84°
69°
1
84°
69°
2
85°
70°
3
84°
70°
4
84°
72°
5
85°
73°
6
85°
72°
7
86°
72°
8
85°
71°
9
86°
72°
10
85°
73°
11
85°
72°
12
86°
71°
13
85°
71°
14
85°
72°
15
86°
70°
16
85°
71°
17
85°
71°
18
86°
72°
19
85°
71°
20
85°
71°
21
86°
70°
22
86°
72°
23
85°
73°
24
87°
73°
25
89°
71°
26
90°
72°
27
90°
72°
28
89°
71°
29
90°
73°
30
90°
73°
31
91°
72°
1
91°
73°
2
90°
71°
3
91°
72°
4
90°
72°
5
89°
71°
6
90°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Barcelona
Barcelona's May 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 69° and 73°. The average high for May is 87° with an average low of 71°. 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 Barcelona. See also: June | July | August.
