Warm, without the crowds: Tenerife, 27 °C · average (1.0× an average month); Lanzarote, 26 °C · average (1.0× an average month); Sofia, 24 °C · average (1.0× an average month). Warmest in September: Seville, 32 °C highs, 3 rain days; Córdoba, 32 °C highs, 3 rain days; Izmir, 31 °C highs, 2 rain days.
Warm, without the crowds
Average high 18–28 °C in September and visitor nights at or below an average month for the region (Eurostat). Warmest first.
Tenerife Spain. 27 °C · average (1.0× an average month)
Lanzarote Spain. 26 °C · average (1.0× an average month)
Sofia Bulgaria. 24 °C · average (1.0× an average month)
Lyon France. 24 °C · quiet (0.7× an average month)
Gran Canaria Spain. 23 °C · average (1.0× an average month)
Nantes France. 22 °C · average (1.0× an average month)
Innsbruck Austria. 22 °C · average (0.9× an average month)
Geneva Switzerland. 21 °C · average (1.0× an average month) Warmest in September
Highest average daily high in September (ten-year ERA5 normals), capped at 32 °C.
Seville Spain. 32 °C highs, 3 rain days
Córdoba Spain. 32 °C highs, 3 rain days
Izmir Türkiye. 31 °C highs, 2 rain days
Rhodes Greece. 30 °C highs, 1 rain days
Granada Spain. 29 °C highs, 4 rain days
Catania Italy. 29 °C highs, 7 rain days
Athens Greece. 29 °C highs, 3 rain days
Heraklion (Crete) Greece. 28 °C highs, 4 rain days Driest in September
Fewest days with at least 1 mm of rain in September, among cities averaging 12 °C or more.
Lowest fares in September 2027
Lowest fare found in recent flight searches (Aviasales) from London, Paris, Berlin, Amsterdam, Stockholm or New York for September 2027. Fares change daily.
Sources
- Open-Meteo historical weather API — ten-year monthly climate normals (ERA5), CC BY 4.0
- Eurostat — nights spent at tourist accommodation by NUTS 2 region and month — crowd level relative to an average month
- Aviasales flight searches — lowest fares found for September 2027, collected nightly
- ReasonStay methodology — how lists are built












