S
M
T
W
T
F
S
26
85°
71°
27
85°
71°
28
84°
70°
29
85°
72°
30
85°
72°
31
84°
71°
1
84°
71°
2
84°
70°
3
80°
70°
4
81°
69°
5
81°
70°
6
82°
70°
7
85°
68°
8
86°
71°
9
86°
70°
10
85°
70°
11
84°
71°
12
85°
66°
13
81°
66°
14
81°
65°
15
82°
66°
16
81°
67°
17
84°
68°
18
84°
69°
19
82°
68°
20
83°
66°
21
81°
65°
22
82°
69°
23
83°
67°
24
82°
67°
25
83°
64°
26
80°
63°
27
80°
63°
28
81°
64°
29
80°
65°
30
80°
65°
31
81°
66°
1
81°
67°
2
83°
69°
3
84°
68°
4
81°
67°
5
79°
66°
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 86°, with overnight lows between 63° and 72°. The average high for August is 83° with an average low of 68°. 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.
