S
M
T
W
T
F
S
26
86°
71°
27
86°
69°
28
85°
68°
29
83°
67°
30
83°
65°
31
84°
68°
1
83°
70°
2
81°
68°
3
81°
70°
4
82°
67°
5
81°
67°
6
82°
68°
7
82°
65°
8
81°
67°
9
Hist. Avg.
82°
69°
10
Hist. Avg.
82°
69°
11
Hist. Avg.
82°
69°
12
Hist. Avg.
82°
69°
13
Hist. Avg.
82°
69°
14
Hist. Avg.
82°
69°
15
Hist. Avg.
82°
69°
16
Hist. Avg.
82°
69°
17
Hist. Avg.
82°
69°
18
Hist. Avg.
82°
69°
19
Hist. Avg.
82°
69°
20
Hist. Avg.
81°
69°
21
Hist. Avg.
81°
68°
22
Hist. Avg.
81°
68°
23
Hist. Avg.
81°
68°
24
Hist. Avg.
81°
68°
25
Hist. Avg.
80°
68°
26
Hist. Avg.
80°
68°
27
Hist. Avg.
80°
68°
28
Hist. Avg.
80°
68°
29
Hist. Avg.
80°
68°
30
Hist. Avg.
80°
68°
31
Hist. Avg.
80°
68°
1
Hist. Avg.
79°
67°
2
Hist. Avg.
79°
67°
3
Hist. Avg.
79°
67°
4
Hist. Avg.
79°
67°
5
Hist. Avg.
79°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Barcelona
Barcelona's August 2026 forecast shows daily high temperatures ranging from 81° to 86°, with overnight lows between 65° and 71°. 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.