Poland weather

Our guide to the weather in Poland during September

20

Average high

3

UV Index

69mm

Monthly rainfall

70%

Humidity

We've looked at the most up-to-date weather data for Poland, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Poland weather in September.

What's the temperature like in Poland during September?

The temperature reaches around 20℃ during the daytime in September, falling away to 12℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Poland during September?

On average, there will be 5 rainy days during the month, amounting to 69.1mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Poland during September?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in September. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.

Join the club...

Be the first to hear about discounted holidays, flash sales and amazing travel competitions to Poland!

Weather in Poland

Our month-by-month guide to the weather and climate in Poland

0.5

Poland weather in

January
2.5

Poland weather in

February
7.8

Poland weather in

March
14.2

Poland weather in

April
18.7

Poland weather in

May
23.1

Poland weather in

June
24.9

Poland weather in

July
25.2

Poland weather in

August
19.6

Poland weather in

September
13.6

Poland weather in

October
7.9

Poland weather in

November
2.6

Poland weather in

December