Weather in Österreich in September
Country-wide climate normals across 15 cities in Österreich.
How Hot Is Österreich in September?
Österreich's September is consistently warm — typical 20°C, with no major regional outliers.
Sunshine in Österreich in September
Österreich's September brings mixed skies — Vienna averages 4.2h of sun, with similar conditions nationwide. Cloudy periods alternate with sunny stretches, and the sun is up between 6:30 am and 7:05 pm. Plan for variability rather than guaranteed sunshine.
Does It Rain In Österreich In September?
Heavy rain shapes Österreich's September: Vienna averages 120mm across 12 days, and most regions of the country see similar persistent wet conditions. Long sunny stretches are rare. Expect rain on roughly two out of every three days.
Is Österreich Humid In September?
Österreich is enveloped in tropical-thick humidity through September: Vienna averages 76%, and most of the country tracks similarly. The constant moisture makes warm temperatures feel substantially hotter, and even nights bring limited cooling. Light cotton clothing is essential.
Wind In Österreich In September
Österreich's September has gentle wind — Vienna averages 11 kph, and the country tracks similarly. Outdoor activity is comfortable, and afternoon thermals add a pleasant breeze in inland areas.
Cloud Cover In Österreich In September
Österreich sees mostly cloudy weather through September: Vienna averages 56% cloud cover, and the pattern repeats across the country. Bright sun is uncommon; expect a grey, soft-lit feel to most days.