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°
79°
16
90°
75°
17
90°
77°
18
91°
79°
19
95°
81°
20
90°
72°
21
84°
73°
22
83°
71°
23
87°
70°
24
84°
66°
25
84°
66°
26
87°
70°
27
85°
68°
28
83°
65°
29
83°
69°
30
84°
68°
31
85°
68°
1
83°
69°
2
78°
66°
3
77°
64°
4
79°
67°
5
81°
69°
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 77° to 95°, with overnight lows between 64° and 81°. The average high for August is 84° 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.
