What September feels like in Warsaw
September is early autumn in Warsaw. Daytime temperatures are mild — neither cold nor hot for walking around. Evenings bring a clear drop in temperature, and nights are cool. Moist air is typical, yet it seldom feels heavy at this time of year.
Rain in Warsaw in September
Showers are a regular feature, arriving about one day in 3. Each rainy day adds about 5.3 mm (0.2 in), a proper wetting rather than a sprinkle. The yearly figure is similar, around 5.2 mm per wet day.
Daylight and sunshine in September
On 15 September the sun rises at about 6:09 am and sets around 6:54 pm local time, giving 12 h 46 min of daylight. Compared with mid-August, the day has lost 2 h. About 67% of daylight hours are sunny; in short, there are plenty of bright spells.
How September compares to the rest of the year
September is the 4th warmest month of the year in Warsaw. Afternoons run 4.9°C (8.8°F) cooler than in August, with 28 mm less rain. October is cooler again. The next month's average high: 13°C (55.4°F).
Who September suits
- Sightseeing: a good fit — comfortable enough to explore on foot all day.
- Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
Tips for visiting Warsaw in September
Versatile Layers
Mornings and evenings are cooler than midday, so dress in layers.
Rain Protection
Keep a small umbrella in your bag and wear shoes that cope with puddles.
Sunglasses
Bright days make sunglasses worth packing.
Quick questions
How warm is Warsaw in September?
Expect around 19.3°C (66.7°F) in the afternoon and 11.1°C (52°F) at night, which most visitors would call mild.
Does it rain a lot in Warsaw in September?
Yes, fairly — rain falls about one day in 3 and totals about 53 mm, so an umbrella is worth carrying.
What should I wear in Warsaw in September?
The numbers point to versatile layers, rain protection and sunglasses. Add a layer for after dark.
Is September or October better for visiting Warsaw?
On our 12-month climate ranking, September comes out ahead (#1 of 12 vs #3). October is cooler.