Average weather in September around the world
What September feels like across the globe — average temperatures for major cities, the warmest and coldest destinations, and where the weather is at its best. Search, filter and sort every city just like the main browser. From 30 years of climate normals (1991–2020).
Across the 17,979 cities tracked here, the median average temperature in September is 19°C, and most cities fall between 13°C and 27°C. There is no single "average September temperature" — the same month is deep winter in one hemisphere and high summer in the other.
Among the world's best-known cities, 22% are warm (25°C / 77°F or above) in September and 0% are cold (5°C / 41°F or below) — the table below shows exactly where each one lands.
Average temperature in September, every city
10,000+ cities showing their average September temperature, from 30 years of climate normals (1991–2020). Click a city for its full September climate — daily highs and lows, rain and sun. GDP, safety and advisory are country-level figures, not city-specific.
Warmest in September
Large cities with the highest average temperature this month.
- 1
Al Başrah al Qadīmah35°C - 2Basrah35°C
- 3Nasiriyah35°C
- 4Baghdad34°C
- 5
Mecca34°C - 6Medina34°C
- 7Sadr City34°C
- 8Sulţānah34°C
- 9Abū Ghurayb34°C
- 10
Al Ain34°C
Coldest in September
Large cities with the lowest average temperature this month.
- 1
Puente Alto7°C - 2
Ulaanbaatar8°C - 3
La Paz8°C - 4
Tomsk9°C - 5
Cuenca9°C - 6Krasnoyarsk9°C
- 7Kirov10°C
- 8Novokuznetsk10°C
- 9Kemerovo10°C
- 10Irkutsk10°C
Best weather in September
All cities ranked →Where September is at its most pleasant — warm but not hot, dry and clear — ranked by travel-comfort score.