Weather in Poland for September 2025
In general, the average temperature in Poland at the beginning of September is 24 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.7 °C by the end of September.
Poland experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 29.3 mm.
Temperatures
Rain 🌧️
Poland Weather September
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  22° | 2  23° | 3 26° | 4  24° | 5 24° | 6  24° | 7 25° |
| 8 27° | 9 26° | 10 25° | 11 24° | 12  23° | 13 24° | 14 21° |
| 15 22° | 16 22° | 17 22° | 18  21° | 19 17° | 20 19° | 21 21° |
| 22 21° | 23  20° | 24 20° | 25 21° | 26 22° | 27 21° | 28 19° |
| 29 19° | 30 16° |
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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 | 22° /12° | 0.7 mm | 5 | |
| 2 Sept. | Overcast | 23° /13° | 0 mm | 6 | |
| 3 Sept. | Overcast | 26° /12° | 0 mm | 6 | |
| 4 Sept. | Partly cloudy | 24° /12° | 0.1 mm | 6 | |
| 5 Sept. | Partly cloudy | 24° /12° | 0 mm | 7 | |
| 6 Sept. | Sunny | 24° /12° | 0 mm | 7 | |
| 7 Sept. | Partly cloudy | 25° /12° | 0 mm | 7 | |
| 8 Sept. | Sunny | 27° /13° | 0.2 mm | 7 | |
| 9 Sept. | Sunny | 26° /14° | 1.6 mm | 6 | |
| 10 Sept. | Sunny | 25° /13° | 1.2 mm | 6 | |
| 11 Sept. | Partly cloudy | 24° /14° | 3.1 mm | 6 | |
| 12 Sept. | Heavy rain at times | 23° /14° | 0.7 mm | 5 | |
| 13 Sept. | Patchy rain possible | 24° /13° | 0.3 mm | 6 | |
| 14 Sept. | Patchy rain possible | 21° /13° | 3.4 mm | 5 | |
| 15 Sept. | Sunny | 22° /13° | 1.6 mm | 6 | |
| 16 Sept. | Sunny | 22° /13° | 2.6 mm | 6 | |
| 17 Sept. | Patchy rain possible | 22° /13° | 0.5 mm | 6 | |
| 18 Sept. | Moderate or heavy rain shower | 21° /12° | 4.1 mm | 5 | |
| 19 Sept. | Overcast | 17° /11° | 1.8 mm | 4 | |
| 20 Sept. | Overcast | 19° /10° | 0.4 mm | 5 | |
| 21 Sept. | Sunny | 21° /10° | 0.4 mm | 5 | |
| 22 Sept. | Patchy rain possible | 21° /11° | 0.5 mm | 5 | |
| 23 Sept. | Cloudy | 20° /11° | 0.7 mm | 5 | |
| 24 Sept. | Overcast | 20° /11° | 0.8 mm | 5 | |
| 25 Sept. | Cloudy | 21° /11° | 0.2 mm | 5 | |
| 26 Sept. | Overcast | 22° /11° | 0 mm | 5 | |
| 27 Sept. | Partly cloudy | 21° /12° | 0.7 mm | 5 | |
| 28 Sept. | Overcast | 19° /11° | 2.4 mm | 5 | |
| 29 Sept. | Overcast | 19° /10° | 0 mm | 5 | |
| 30 Sept. | Overcast | 16° /10° | 1.4 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
September rainfall patterns in Poland
UV exposure in Poland during September
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