Verdict: Excellent month
Barcelona Weather in September
September hits the sweet spot in Barcelona — highs around 26°C (79°F), ideal for a full day on foot. Expect showers on roughly 10 days of the month — rarely trip-ruining, worth planning around. Overall, September is one of the best months of the year to be in Barcelona.
Average high
26°C / 79°F
Average low
18°C / 64°F
Rain days
~10
Precipitation
85 mm
What to pack for Barcelona in September
- Summer clothes, plus one light layer for air-con and evenings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Barcelona: Jul (29°C / 84°F) · Coolest: Jan (14°C / 57°F) · Wettest: Sep (~10 rain days)
14°
5°
Jan
16°
7°
Feb
16°
8°
Mar
18°
10°
Apr
22°
14°
May
26°
19°
Jun
29°
21°
Jul
29°
22°
Aug
26°
18°
Sep
22°
15°
Oct
18°
10°
Nov
15°
6°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)