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Greater Poland weather
Greater Poland (Poznań)
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Poland weather

Weather in Greater Poland for September 2025

Your guide to Greater Poland weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Greater Poland is slightly cooler than the historical average by -1.4 °C.

  • The forecast for the next days in Greater Poland predicts a temperature of 17.3 °C, which is cooler than the historical average.

  • In general, the average temperature in Greater Poland at the beginning of September is 26 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.9 °C by the end of September.

    • Rain 🌧️

  • Greater Poland experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 22.4 mm.

Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/14°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
56 %
Avg humidity

Greater Poland Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
24°
2
Overcast
25°
3
Overcast
27°
4
Sunny
27°
5
Sunny
28°
6
Sunny
24°
7
Sunny
27°
8
Sunny
28°
9
Partly cloudy
27°
10
Sunny
25°
11
Sunny
22°
12
Partly cloudy
22°
13
Thundery outbreaks possible
20°
14
Partly cloudy
18°
15
Sunny
20°
16
Sunny
23°
17
Patchy rain possible
18°
18
Patchy rain possible
20°
19
Sunny
25°
20
Sunny
28°
21
Sunny
29°
22
Patchy rain possible
16°
23
Partly cloudy
16°
24
Partly cloudy
16°
25
Patchy rain possible
11°
26
Moderate rain
9°
27
Patchy rain possible
10°
28
Overcast
13°
29
Overcast
15°
30
Patchy rain possible
16°

Temperatures trend during September in Greater Poland

See the weather trend as well as the moving average line

September weather in Greater Poland day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 24° /13° 2.4 mm 5
2 Sept. Overcast
Overcast
 25° /14° 0 mm 5
3 Sept. Overcast
Overcast
 27° /16° 0 mm 7
4 Sept. Sunny
Sunny
 27° /15° 0 mm 7
5 Sept. Sunny
Sunny
 28° /17° 0 mm 7
6 Sept. Sunny
Sunny
 24° /15° 2.7 mm 6
7 Sept. Sunny
Sunny
 27° /14° 0 mm 7
8 Sept. Sunny
Sunny
 28° /16° 2.7 mm 6
9 Sept. Partly cloudy
Partly cloudy
 27° /15° 0.2 mm 7
10 Sept. Sunny
Sunny
 25° /15° 0.5 mm 6
11 Sept. Sunny
Sunny
 22° /14° 4.8 mm 5
12 Sept. Partly cloudy
Partly cloudy
 22° /14° 1.3 mm 5
13 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 20° /11° 5.8 mm 5
14 Sept. Partly cloudy
Partly cloudy
 18° /11° 1.8 mm 5
15 Sept. Sunny
Sunny
 20° /12° 1.1 mm 5
16 Sept. Sunny
Sunny
 23° /12° 1.2 mm 5
17 Sept. Patchy rain possible
Patchy rain possible
 18° /12° 3.5 mm 0.5
18 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 0.8
19 Sept. Sunny
Sunny
 25° /15° 0 mm 1
20 Sept. Sunny
Sunny
 28° /16° 0 mm 1
21 Sept. Sunny
Sunny
 29° /17° 0 mm 1.2
22 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 0.7 mm 3
23 Sept. Partly cloudy
Partly cloudy
 16° /10° 0 mm 4
24 Sept. Partly cloudy
Partly cloudy
 16° /10° 0.1 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 11° /9° 2.3 mm 2
26 Sept. Moderate rain
Moderate rain
 9° /8° 5.3 mm 2
27 Sept. Patchy rain possible
Patchy rain possible
 10° /8° 0.6 mm 2
28 Sept. Overcast
Overcast
 13° /9° 0.1 mm 3
29 Sept. Overcast
Overcast
 15° /8° 0 mm 3
30 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 0.3 mm 3
Next
Important Notice
Our weather forecast for Greater Poland in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Greater Poland forecast closer to your planned date for the most up-to-date weather information.
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Greater Poland in September - FAQ

What are the expected maximum and minimum temperatures in Greater Poland during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Greater Poland during September?
In September, Greater Poland can expect light to moderate rainfall, totaling 22.4 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Greater Poland during September?
The average wind speed in Greater Poland during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Greater Poland

Explore the daily rainfall trends and prepare for Greater Polands September weather 💧

UV exposure in Greater Poland during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Greater Poland
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Poznań
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Location coordinates Where is Greater Poland?

Get accurate weather forecasts for Greater Poland, located at latitude 52.407 and longitude 16.93. Stay updated with localized weather information tailored for Greater Poland.

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