S
M
T
W
T
F
S
30
84°
72°
31
86°
70°
1
82°
73°
2
88°
72°
3
84°
73°
4
86°
75°
5
88°
75°
6
88°
75°
7
86°
73°
8
86°
73°
9
82°
66°
10
79°
63°
11
81°
64°
12
82°
68°
13
82°
68°
14
84°
68°
15
86°
72°
16
82°
64°
17
75°
66°
18
77°
66°
19
81°
64°
20
81°
68°
21
84°
68°
22
82°
68°
23
82°
68°
24
81°
66°
25
84°
68°
26
N/A
27
81°
68°
28
81°
70°
29
79°
70°
30
79°
70°
1
77°
72°
2
73°
68°
3
70°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Barcelona
Barcelona's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Barcelona. See also: October | November | December.
