S
M
T
W
T
F
S
26
85°
71°
27
84°
72°
28
86°
72°
29
86°
71°
30
87°
72°
31
87°
72°
1
86°
71°
2
87°
71°
3
81°
65°
4
81°
64°
5
82°
66°
6
83°
66°
7
82°
67°
8
82°
68°
9
84°
69°
10
82°
68°
11
84°
67°
12
83°
69°
13
84°
72°
14
84°
71°
15
86°
69°
16
85°
70°
17
86°
71°
18
83°
69°
19
86°
69°
20
86°
68°
21
85°
70°
22
85°
70°
23
84°
66°
24
82°
67°
25
84°
70°
26
83°
66°
27
80°
64°
28
80°
65°
29
81°
66°
30
82°
67°
31
83°
69°
1
82°
67°
2
83°
68°
3
81°
68°
4
79°
66°
5
80°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Barcelona
Barcelona's August 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 64° and 72°. The average high for August is 83° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Barcelona. See also: September | October | November.
