Warsaw Weather in September
17.8°C high · 8.7°C low · 46 mm rain · 4.9h sun
Sep is a warm month in Warsaw — not peak season, but a good time to avoid crowds.
September at a glance
| Metric | Value |
|---|---|
| Average high | 17.8°C |
| Average low | 8.7°C |
| Rainfall | 46 mm |
| Sunshine | 4.9 hours/day |
| Daylight | 12.4 hours |
What to pack in September
Pack a jacket and layers for Warsaw in September.
Warsaw weather by month
JanFebMarAprMayJunJulAugSepOctNovDec
Frequently asked questions
What is the weather in Warsaw in September?
Highs of 17.8°C and lows of 8.7°C, with about 46 mm of rain and 4.9 hours of sunshine per day.
Is September a good time to visit Warsaw?
Sep is a warm month in Warsaw — not peak season, but a good time to avoid crowds.
What to do in Warsaw · Best time to visit Warsaw
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.