Weather in Luxembourg in September
Country-wide climate normals across 15 cities in Luxembourg.
How Hot Is Luxembourg in September?
Luxembourg's small geographic footprint means September is uniformly mild — typical 19°C highs nationwide.
Sunshine in Luxembourg in September
Luxembourg's September brings mixed skies — Luxembourg averages 4.2h of sun, with similar conditions nationwide. Cloudy periods alternate with sunny stretches, and the sun is up between 7:10 am and 7:45 pm. Plan for variability rather than guaranteed sunshine.
Does It Rain In Luxembourg In September?
Typical September rainfall covers Luxembourg: about 73mm in Luxembourg across 10 days, with wetter conditions in coastal regions and drier conditions inland. Expect showers about half the days, but extended dry stretches between them. The pattern is variable but predictable.
Is Luxembourg Humid In September?
Heavy oppressive humidity covers Luxembourg in September: 76% on average in Luxembourg, and similar saturating conditions exist nationwide. The air feels thick and heavy from sunrise to sundown, with little overnight respite. Coastal and tropical regions feel especially stifling.
Wind In Luxembourg In September
Gentle steady winds define Luxembourg's September: Luxembourg averages 16 kph, with conditions consistent across most regions. The breeze keeps warm days bearable without being a nuisance.
Cloud Cover In Luxembourg In September
Luxembourg sees mostly cloudy weather through September: Luxembourg averages 57% cloud cover, and the pattern repeats across the country. Bright sun is uncommon; expect a grey, soft-lit feel to most days.