Warsaw
September
Weather in Warsaw for September 2025
Your guide to Warsaw weather in September - trends and predictions
In general, the average temperature in Warsaw at the beginning of September is 27.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.7 °C by the end of September.
With an average of 3 rainy days, Warsaw experiences minimal rainfall in September, ensuring that most days remain pleasantly dry.
Is September a good time to visit Warsaw? check out the best time to travel to Warsaw page.
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27
Dry days
3
Rainy days
0
Snow days
26°/15°
Temperatures
14 km/h
Avg max wind
51 %
Avg humidity
Warsaw in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 27° | 3 29° | 4  28° | 5  28° | 6 29° | 7 30° |
| 8 30° | 9 29° | 10 26° | 11 27° | 12 25° | 13 27° | 14 22° |
| 15 22° | 16 26° | 17 27° | 18 28° | 19  24° | 20 25° | 21 26° |
| 22 27° | 23 23° | 24 24° | 25  23° | 26 25° | 27 25° | 28 23° |
| 29 21° | 30  18° |
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Temperatures trend during September in Warsaw
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Overcast | 24° /13° | 0 mm | 6 | |
| 2 Sept. | Overcast | 27° /15° | 0 mm | 7 | |
| 3 Sept. | Overcast | 29° /16° | 0 mm | 7 | |
| 4 Sept. | Partly cloudy | 28° /15° | 0.2 mm | 7 | |
| 5 Sept. | Sunny | 28° /15° | 0 mm | 8 | |
| 6 Sept. | Sunny | 29° /17° | 0 mm | 8 | |
| 7 Sept. | Partly cloudy | 30° /17° | 0 mm | 8 | |
| 8 Sept. | Partly cloudy | 30° /16° | 0 mm | 8 | |
| 9 Sept. | Sunny | 29° /17° | 0.1 mm | 7 | |
| 10 Sept. | Sunny | 26° /16° | 1 mm | 7 | |
| 11 Sept. | Sunny | 27° /16° | 0 mm | 7 | |
| 12 Sept. | Sunny | 25° /15° | 0 mm | 6 | |
| 13 Sept. | Partly cloudy | 27° /15° | 0.1 mm | 7 | |
| 14 Sept. | Overcast | 22° /14° | 6.6 mm | 5 | |
| 15 Sept. | Sunny | 22° /12° | 2.9 mm | 6 | |
| 16 Sept. | Sunny | 26° /13° | 0 mm | 7 | |
| 17 Sept. | Partly cloudy | 27° /14° | 0 mm | 7 | |
| 18 Sept. | Sunny | 28° /17° | 0.2 mm | 7 | |
| 19 Sept. | Light rain shower | 24° /16° | 1.1 mm | 6 | |
| 20 Sept. | Partly cloudy | 25° /13° | 0 mm | 7 | |
| 21 Sept. | Sunny | 26° /14° | 0 mm | 7 | |
| 22 Sept. | Patchy rain possible | 27° /16° | 0 mm | 7 | |
| 23 Sept. | Patchy rain possible | 23° /14° | 0.3 mm | 6 | |
| 24 Sept. | Overcast | 24° /13° | 0.2 mm | 6 | |
| 25 Sept. | Cloudy | 23° /13° | 0 mm | 5 | |
| 26 Sept. | Sunny | 25° /14° | 0 mm | 6 | |
| 27 Sept. | Sunny | 25° /16° | 0.3 mm | 6 | |
| 28 Sept. | Sunny | 23° /13° | 0 mm | 6 | |
| 29 Sept. | Sunny | 21° /12° | 0 mm | 6 | |
| 30 Sept. | Light drizzle | 18° /10° | 0.4 mm | 5 | |
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Important Notice
Our weather forecast for Warsaw 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 Warsaw forecast closer to your planned date for the most up-to-date weather information.
Warsaw in September - FAQ
What are the expected maximum and minimum temperatures in Warsaw during September?
During September, expect a variety of temperatures with highs around 26° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Warsaw during September?
Rainfall in Warsaw during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 3 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Warsaw during September?
The average wind speed in Warsaw during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Warsaw in September?
As you prepare for your trip to Warsaw 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 Warsaw, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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