S
M
T
W
T
F
S
26
86°
73°
27
86°
73°
28
88°
73°
29
88°
75°
30
88°
75°
31
88°
75°
1
86°
79°
2
88°
77°
3
88°
79°
4
86°
79°
5
91°
75°
6
90°
75°
7
90°
75°
8
90°
77°
9
93°
81°
10
91°
79°
11
91°
79°
12
90°
79°
13
93°
79°
14
93°
79°
15
91°
78°
16
92°
78°
17
91°
77°
18
92°
78°
19
93°
78°
20
90°
76°
21
84°
72°
22
87°
73°
23
86°
72°
24
87°
71°
25
83°
70°
26
84°
68°
27
83°
69°
28
79°
66°
29
79°
64°
30
80°
66°
31
82°
68°
1
83°
69°
2
79°
67°
3
82°
69°
4
81°
68°
5
80°
67°
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 93°, with overnight lows between 64° and 78°. The average high for August is 85° 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 August weather will actually feel in Barcelona. See also: September | October | November.
