Last updated: August 27, 2025
In September, the average temperature in Bierzwnik, Poland hovers around 15°C (59°F). Visitors can expect a range between a cool 3°C (38°F) and a warm 32°C (89°F). With an average precipitation of 59 mm (2.3 in) over approximately 10 days, it's wise to be prepared for occasional showers. Additionally, the average humidity sits at a comfortable 78%, ensuring a pleasant atmosphere throughout the month.
In September in Bierzwnik, the average temperature is 15°C (59°F). The maximum can reach 32°C (89°F), and the minimum can be as low as 3°C (38°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities while preparing for both warm and cooler weather.
In Bierzwnik in September, the precipitation amount is 59 mm (2.3 in) over the course of 10 days.
In Bierzwnik in September, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.
In Bierzwnik in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Bierzwnik.
UV Risk Categories
Weather in Bierzwnik varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bierzwnik, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 59 mm (2.3 inches) | 90% | low |
| February Weather | 2°C (35°F) | 47 mm (1.8 inches) | 90% | low |
| March Weather | 4°C (40°F) | 51 mm (2.0 inches) | 87% | moderate |
| April Weather | 9°C (48°F) | 37 mm (1.5 inches) | 80% | moderate |
| May Weather | 13°C (56°F) | 58 mm (2.3 inches) | 67% | high |
| June Weather | 19°C (66°F) | 54 mm (2.1 inches) | 67% | very high |
| July Weather | 19°C (67°F) | 111 mm (4.4 inches) | 67% | high |
| August Weather | 19°C (67°F) | 56 mm (2.2 inches) | 67% | high |
| September Weather | 15°C (59°F) | 59 mm (2.3 inches) | 78% | moderate |
| October Weather | 11°C (51°F) | 68 mm (2.7 inches) | 84% | moderate |
| November Weather | 6°C (43°F) | 41 mm (1.6 inches) | 89% | low |
| December Weather | 2°C (36°F) | 48 mm (1.9 inches) | 92% | low |