Weather in Poland in September
Country-wide climate normals across 15 cities in Poland.
How Hot Is Poland in September?
Uniform warmth covers Poland in September: highs near 20°C across all cities.
Sunshine in Poland in September
Sun and cloud trade off across Poland in September: Warsaw averages 4.1h of direct sun a day, with daylight from 6:10 am to 6:50 pm. Conditions vary day to day, with bright spells interrupted by cloudy stretches. Most regions of the country see a similar mixed pattern, though some areas may lean drier or wetter than the national average.
Does It Rain In Poland In September?
Poland sees moderate rainfall in September — Warsaw averages 69mm across 10 days, with notable regional variation. Coastal cities often see more rain than the inland average, while drier regions see less. The country's September weather mixes sunny stretches with regular shower spells.
Is Poland Humid In September?
Poland feels humid through September: 68% in Warsaw, similar nationwide. Warm days feel several degrees hotter than the thermometer suggests, and morning mist or post-rain steam is common. Drier upland or interior regions may feel a bit less oppressive.
Wind In Poland In September
Light breezes are typical across Poland in September: 17 kph in Warsaw, with similar gentle wind conditions in most regions. The air moves enough to keep things fresh on warm days but not enough to be disruptive. Coastal cities may see slightly more.
Cloud Cover In Poland In September
Poland sees mostly cloudy weather through September: Warsaw averages 58% cloud cover, and the pattern repeats across the country. Bright sun is uncommon; expect a grey, soft-lit feel to most days.