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The Sagrada Família rising over Barcelona rooftops toward the sea at golden hourMadrid city view

Barcelona vs Madrid in September

Barcelona and Madrid are close in September. Barcelona averages 18–26°C with high crowds; Madrid 16–26°C with moderate–high crowds.

By Daan · Last reviewed October 2026

Barcelona and Madrid

The verdict for September

  • WeatherVery similar9/10 vs 9/10
  • CrowdsMadrid is quieterHigh vs Moderate–High
  • PricesMadrid is cheaper€€€€ vs €€€
  • OverallVery similar9/10 vs 9/10
The Sagrada Família rising over Barcelona rooftops toward the sea at golden hour

Barcelona in September

Summer ease returns

Temperature
18–26°C
Crowds
High
Prices
€€€€

+Warm weather with slightly less intense heat.

–Crowds remain high; La Mercè can create an additional spike.

Late-September warmth with the sea still at its best.

Madrid city view

Madrid in September

Summer warmth with autumn breathing room.

Temperature
16–26°C
Crowds
Moderate–High
Prices
€€€

+Warm weather + lively city

–Popular dates can be busy

September is one of Madrid’s sweet spots. The extreme summer heat starts easing while sunny days remain common, and the city returns to its normal rhythm after August.

Scores and crowd levels are my own judgement; temperatures are monthly averages. Higher scores are better: quieter, cheaper and more pleasant.