Bielsko-Biala Weather in September
With daytime temperatures of 19°C (66°F) and nighttime lows of 9°C (48°F), September in Bielsko-Biala brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 103 mm (4.1 in) falls on average.
Rainfall in Bielsko-Biala in September
The climate data from previous years indicates about 13 days of rain, averaging 103 mm (4.1 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Bielsko-Biala in September
Daytime highs in Bielsko-Biala in September reach 19°C (66°F), with nights around 9°C (48°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Bielsko-Biala in September
The area enjoys a balanced 150 hours of sunlight, ensuring it's neither too overcast nor too sunny.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Bielsko-Biala.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Poland, check out our Bielsko-Biala's climate page.
Bielsko-Biala Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
19°C (66°F)
Chance of Rain
42%
Precipitation
103 mm (4.1 in)
Rainy days
13 days
Humidity
78% *
Sunshine
150 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bielsko-Biala typically drop from around 20°C (68°F) at the start of September to approximately 16°C (61°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 11°C (52°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Bielsko-Biala in September
Browse day-by-day weather records for Bielsko-Biala spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bielsko-Biala historical weather extremes in September
Based on weather observations in Bielsko-Biala between 1976 and 2025, these are the recorded extremes during September.
- On September 1, 2015, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- Bielsko-Biala experienced its chilliest September day on September 30, 2010, reaching only 5°C (41°F).
- Nighttime temperatures dropped to -1°C (30°F) on September 28, 1977, marking the coldest September night on record.
Best Places in Poland in September
Find out more about the weather in Poland and which places have the best travel conditions in this month. See all of Poland in September →
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What to Wear in Bielsko-Biala in September
For Bielsko-Biala in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Bielsko-Biala in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Poland, check out our Bielsko-Biala's climate page.
Temperature Rainfall Sunshine Humidity
See the full Bielsko-Biala climate overview or explore weather in Poland.
