Luxembourg in September: where is it warmest?
In September, Schengen is the warmest place with 20 °C by day, Esch-sur-Alzette the coolest with 19 °C. 3 of 3 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sun | Rain days |
|---|---|---|---|---|
| Schengen | 74 | 20° | 5 h | 9 |
| Luxembourg | 76 | 19° | 5 h | 10 |
| Esch-sur-Alzette | 76 | 19° | 5 h | 10 |
Luxembourg in September: quick answers
Luxembourg in September: where is it warmest?
The warmest places in September are Schengen (20 °C), Luxembourg (19 °C) and Esch-sur-Alzette (19 °C).
Luxembourg in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Luxembourg, Esch-sur-Alzette and Schengen.
Luxembourg month by month
Luxembourg: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences