Weather in Poland for September 2025
In general, the average temperature in Poland at the beginning of September is 23.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.9 °C by the end of September.
Poland experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 78.3 mm.
Is September a good time to visit Poland? check out the best time to travel to Poland page.
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Poland in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2  23° | 3  24° | 4 22° | 5  23° | 6 24° | 7 26° |
| 8 28° | 9 24° | 10 23° | 11 23° | 12  23° | 13 21° | 14 20° |
| 15 21° | 16  21° | 17 20° | 18 19° | 19 15° | 20 18° | 21 18° |
| 22 18° | 23 19° | 24  18° | 25 20° | 26 22° | 27 21° | 28 19° |
| 29 17° | 30 15° |
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Temperatures trend during September in Poland
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 20° /12° | 2.5 mm | 5 | |
| 2 Sept. | Sunny | 23° /11° | 1.5 mm | 6 | |
| 3 Sept. | Cloudy | 24° /13° | 4.6 mm | 6 | |
| 4 Sept. | Patchy rain possible | 22° /11° | 0.3 mm | 6 | |
| 5 Sept. | Partly cloudy | 23° /11° | 0 mm | 6 | |
| 6 Sept. | Sunny | 24° /9° | 0 mm | 6 | |
| 7 Sept. | Partly cloudy | 26° /10° | 0 mm | 7 | |
| 8 Sept. | Sunny | 28° /12° | 2.8 mm | 7 | |
| 9 Sept. | Sunny | 24° /12° | 2.1 mm | 6 | |
| 10 Sept. | Partly cloudy | 23° /12° | 3 mm | 6 | |
| 11 Sept. | Cloudy | 23° /12° | 2 mm | 6 | |
| 12 Sept. | Overcast | 23° /11° | 1.6 mm | 5 | |
| 13 Sept. | Patchy rain possible | 21° /11° | 2.9 mm | 5 | |
| 14 Sept. | Patchy rain possible | 20° /12° | 9.8 mm | 5 | |
| 15 Sept. | Sunny | 21° /11° | 6.7 mm | 5 | |
| 16 Sept. | Moderate or heavy rain shower | 21° /11° | 2.9 mm | 5 | |
| 17 Sept. | Moderate or heavy rain shower | 20° /11° | 4.7 mm | 5 | |
| 18 Sept. | Moderate rain at times | 19° /10° | 5.5 mm | 5 | |
| 19 Sept. | Patchy rain possible | 15° /8° | 7 mm | 4 | |
| 20 Sept. | Sunny | 18° /8° | 1.3 mm | 5 | |
| 21 Sept. | Patchy rain possible | 18° /7° | 2.8 mm | 5 | |
| 22 Sept. | Patchy rain possible | 18° /9° | 2.1 mm | 4 | |
| 23 Sept. | Overcast | 19° /9° | 0.4 mm | 4 | |
| 24 Sept. | Light drizzle | 18° /9° | 1 mm | 4 | |
| 25 Sept. | Cloudy | 20° /10° | 0.4 mm | 5 | |
| 26 Sept. | Sunny | 22° /11° | 0.9 mm | 6 | |
| 27 Sept. | Partly cloudy | 21° /11° | 1.3 mm | 6 | |
| 28 Sept. | Partly cloudy | 19° /9° | 1.1 mm | 5 | |
| 29 Sept. | Partly cloudy | 17° /8° | 1.2 mm | 5 | |
| 30 Sept. | Patchy rain possible | 15° /8° | 6 mm | 4 | |
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Guide for Poland in September
In September, Poland experiences a transition from late summer to early autumn, bringing varied weather conditions across the country. At the beginning of the month, the weather in Poland is generally mild and pleasant, with temperatures ranging from 15° in the north to 18° in the south.
The days are still relatively long, providing ample opportunity for outdoor activities and sightseeing. However, occasional rainfall can be expected, particularly in the western and northern regions.
As the month progresses, Poland begins to witness a gradual drop in temperatures. By the end of September, the weather becomes noticeably cooler, with average temperatures ranging from 10° in the north to 14° in the south.
The days become shorter, and the autumn foliage starts to make its appearance, creating picturesque landscapes across the country. Additionally, there is an increase in the frequency of rainfall, particularly in central and eastern Poland.
Overall, September in Poland offers a mix of late summer warmth and early autumn chill, making it a great time to explore the country's natural beauty and cultural attractions.
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Poland in September - FAQ
What to pack to Poland in September?
As you prepare for your trip to Poland in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Poland, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Poland
UV exposure in Poland during September
Quick links
Where is Poland?Get accurate weather forecasts for Poland, located at latitude 50.061 and longitude 19.937. Stay updated with localized weather information tailored for Poland.