Białystok
September
Weather in Białystok for September 2026
Your guide to Białystok weather in September - trends and predictions
In general, the average temperature in Białystok at the beginning of September is 28.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.7 °C by the end of September.
Białystok experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 30.5 mm.
Temperatures
Rain 🌧️
23
Dry days
7
Rainy days
0
Snow days
24°/13°
Temperatures
19 km/h
Avg max wind
52 %
Avg humidity
Białystok Weather September
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Temperatures trend during September in Białystok
See the weather trend as well as the moving average line
September weather in Białystok day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 26° /12° | 0.4 mm | 7 | |
| 2 Sept. |  Heavy rain at times | 29° /14° | 1.3 mm | 7 | |
| 3 Sept. |  Sunny | 30° /16° | 1.4 mm | 7 | |
| 4 Sept. |  Patchy rain possible | 30° /15° | 0.3 mm | 7 | |
| 5 Sept. | Partly cloudy | 30° /16° | 1.2 mm | 7 | |
| 6 Sept. | Partly cloudy | 28° /15° | 0.6 mm | 7 | |
| 7 Sept. | Sunny | 27° /14° | 2.5 mm | 6 | |
| 8 Sept. | Partly cloudy | 27° /13° | 0 mm | 7 | |
| 9 Sept. |  Overcast | 25° /14° | 0.6 mm | 6 | |
| 10 Sept. |  Moderate rain at times | 23° /14° | 1.9 mm | 5 | |
| 11 Sept. | Overcast | 22° /13° | 8.6 mm | 5 | |
| 12 Sept. |  Cloudy | 21° /12° | 1.6 mm | 5 | |
| 13 Sept. | Moderate rain at times | 22° /11° | 1.3 mm | 6 | |
| 14 Sept. | Heavy rain at times | 23° /13° | 7.1 mm | 5 | |
| 15 Sept. | Patchy rain possible | 22° /13° | 5.1 mm | 5 | |
| 16 Sept. | Sunny | 23° /13° | 1.7 mm | 6 | |
| 17 Sept. | Partly cloudy | 22° /11° | 0.9 mm | 6 | |
| 18 Sept. | Cloudy | 22° /11° | 0 mm | 5 | |
| 19 Sept. | Sunny | 23° /12° | 0.2 mm | 6 | |
| 20 Sept. | Sunny | 25° /12° | 0 mm | 7 | |
| 21 Sept. | Sunny | 26° /12° | 0 mm | 7 | |
| 22 Sept. | Sunny | 26° /11° | 0 mm | 7 | |
| 23 Sept. | Sunny | 21° /10° | 0.1 mm | 6 | |
| 24 Sept. | Partly cloudy | 21° /8° | 0 mm | 6 | |
| 25 Sept. | Moderate or heavy rain shower | 18° /8° | 2 mm | 4 | |
| 26 Sept. | Patchy rain possible | 19° /8° | 0.2 mm | 5 | |
| 27 Sept. | Moderate rain at times | 18° /9° | 2.3 mm | 4 | |
| 28 Sept. | Overcast | 18° /8° | 0.3 mm | 4 | |
| 29 Sept. | Overcast | 11° /5° | 0.1 mm | 3 | |
| 30 Sept. | Partly cloudy | 12° /5° | 0.5 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Białystok 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 Białystok forecast closer to your planned date for the most up-to-date weather information.
Change Month
Białystok in September - FAQ
What are the expected maximum and minimum temperatures in Białystok during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Białystok during September?
In September, Białystok can expect light to moderate rainfall, totaling 30.5 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Białystok during September?
The average wind speed in Białystok during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Białystok
Explore the daily rainfall trends and prepare for Białystoks September weather 💧
UV exposure in Białystok during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Białystok?Get accurate weather forecasts for Białystok, located at latitude 53.133 and longitude 23.164. Stay updated with localized weather information tailored for Białystok.
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