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September Weather in Wizna, Poland

Last updated: August 27, 2025

In September, the average temperature in Wizna, Poland hovers around 14°C (58°F), offering a pleasant climate. However, be prepared for fluctuations, as temperatures can dip as low as 1°C (34°F) and rise to a warm 28°C (82°F). Expect 72 mm (2.8 in) of precipitation over approximately 10 days, accompanied by an average humidity of 71%. Whether you're enjoying the mild days or cozying up during cooler spells, Wizna in September has something for everyone!

September Temperature in Wizna

In September in Wizna, the average temperature is 14°C (58°F). Maximums can reach 28°C (82°F), while minimums can drop as low as 1°C (34°F). Be sure to pack layers to enjoy a variety of activities in this fluctuating climate!

September Weather in Wizna: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Wizna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wizna, September typically has an average temperature of 14°C (58°F), with highs reaching up to 28°C (82°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec293137465566666557494133
Data source: Temperature data for Wizna generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Wizna

In Wizna in September, the total precipitation amount is 72 mm (2.8 in) spread over a duration of 10 days.

September Precipitation Trends in Wizna

The chart displays monthly precipitation patterns in Wizna, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Wizna, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec424042377570968372623554
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wizna

In Wizna in September humidity is 71%. With an average temperature of 14°C (58°F), this humidity feels like a damp embrace, making it essential for travelers to pack light, breathable clothing and stay hydrated while exploring the sights.

September Average Humidity in Wizna

This chart illustrates the average monthly humidity levels in Wizna, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Wizna is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%87%76%58%56%59%60%71%86%90%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Wizna

In Wizna 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 Wizna.

Maximum UV Index Levels in Wizna for September

The chart shows the monthly maximum UV Index (UVI) for Wizna in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Wizna typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124567865321
Data source: Wizna September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Wizna Compares to Other Months

Weather in Wizna varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Wizna, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Wizna, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)42 mm (1.7 inches)92%low
February Weather0°C (31°F)40 mm (1.6 inches)90%low
March Weather3°C (37°F)42 mm (1.7 inches)87%moderate
April Weather8°C (46°F)37 mm (1.4 inches)76%moderate
May Weather13°C (56°F)75 mm (2.9 inches)58%high
June Weather19°C (66°F)70 mm (2.8 inches)56%high
July Weather19°C (66°F)96 mm (3.8 inches)59%very high
August Weather19°C (66°F)83 mm (3.3 inches)60%high
September Weather14°C (58°F)72 mm (2.8 inches)71%moderate
October Weather9°C (49°F)62 mm (2.4 inches)86%moderate
November Weather5°C (41°F)35 mm (1.4 inches)90%low
December Weather1°C (33°F)54 mm (2.1 inches)93%low

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