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Ustroń Weather in September
Ustroń in September sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 9°C (48°F). Rainfall is fairly high this month at around 104 mm (4.1 in), so pack a rain jacket to stay dry.
Rainfall in Ustroń in September
This month experiences about 13 days of rain according to historical data, averaging 104 mm (4.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Ustroń in September
Expect highs of 19°C (66°F) in Ustroń in September, with nights dropping to around 9°C (48°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Ustroń in September
The month experiences a moderate amount of sunlight, with 150 hours of sunshine. This provides a nice balance between sunshine and clouds.Should you favor a climate that's both dry and comfortably warm, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Ustroń Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
19°C (66°F)
Chance of Rain
42%
Precipitation
104 mm (4.1 in)
Rainy days
13 days
Humidity
78% *
Sunshine
150 hours *
Percentage Sunshine
*
* Data from: Ostrava, Czech Republic (39 KM, 24 Miles).
Ustroń Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ustroń - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ustroń typically drop from around 18°C (64°F) at the start of September to approximately 14°C (57°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 10°C (50°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 records for Ustroń in September
Browse day-by-day weather records for Ustroń spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ustroń historical weather extremes in September
The extremes listed below come from historical weather data collected in Ustroń from 1976 through 2025.
- The hottest September day on record in Ustroń reached 29°C (84°F) (September 3, 2024).
- The coldest September day was on September 30, 2010, with a maximum of 4°C (39°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 →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Ustroń in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Ustroń in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping3/10 -
Outdoor sports9/10
Ustroń 3-Day Forecast
More climate data for Ustroń
Temperature Rainfall Sunshine Humidity
See the full Ustroń climate overview or explore weather in Poland.
Popular in September
Where to go in September - average daytime high across popular destinations.
Poznań
20°C (68°F) Kraków
20°C (68°F) Warsaw20°C (68°F) Gdańsk19°C (66°F) Gdynia
18°C (64°F) Sopot19°C (66°F) Kołobrzeg19°C (66°F) Zakopane17°C (63°F) Bucket list
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