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September Weather in Osielsko, Poland

Last updated: August 27, 2025

In September, the average temperature in Osielsko, Poland hovers around 15°C (58°F). Expect temperatures to range from a chilly 2°C (35°F) to a warm 32°C (91°F). With an average precipitation of 65 mm (2.5 in) spread over 10 days, you might want to keep an umbrella handy! Humidity levels can be quite high, averaging 75%, so prepare for a humid experience as you enjoy your time in this seasonal setting.

September Temperature in Osielsko

In September in Osielsko, the average temperature is 15°C (58°F). The maximum can reach 32°C (91°F), and the minimum can be as low as 2°C (35°F). Be prepared for a wide range of temperatures while traveling during this time.

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

The chart illustrates September temperature patterns in Osielsko, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osielsko, September typically has an average temperature of 15°C (58°F), with highs reaching up to 32°C (91°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec333439475565666658504235
Data source: Temperature data for Osielsko 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 Osielsko

In Osielsko in September, the total precipitation amount is 65 mm (2.5 in) over the course of 10 days.

September Precipitation Trends in Osielsko

The chart displays monthly precipitation patterns in Osielsko, 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 Osielsko, September typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4240413876791036365643843
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Osielsko

In Osielsko in September humidity is 75%. With an average temperature of 15°C (58°F), this humidity feels like you're stepping into a warm, damp blanket, making travel a bit more challenging as the air clings to your skin, leaving you craving a refreshing breeze along the way.

September Average Humidity in Osielsko

This chart illustrates the average monthly humidity levels in Osielsko, 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 Osielsko is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%87%79%63%61%63%65%75%85%90%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Osielsko

In Osielsko 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 Osielsko.

Maximum UV Index Levels in Osielsko for September

The chart shows the monthly maximum UV Index (UVI) for Osielsko 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 Osielsko typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Osielsko 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 Osielsko Compares to Other Months

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

This table compares monthly weather conditions in Osielsko, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)42 mm (1.6 inches)91%low
February Weather1°C (34°F)40 mm (1.6 inches)90%low
March Weather4°C (39°F)41 mm (1.6 inches)87%moderate
April Weather8°C (47°F)38 mm (1.5 inches)79%moderate
May Weather13°C (55°F)76 mm (3.0 inches)63%high
June Weather18°C (65°F)79 mm (3.1 inches)61%very high
July Weather19°C (66°F)103 mm (4.1 inches)63%very high
August Weather19°C (66°F)63 mm (2.5 inches)65%high
September Weather15°C (58°F)65 mm (2.5 inches)75%moderate
October Weather10°C (51°F)64 mm (2.5 inches)85%moderate
November Weather6°C (42°F)38 mm (1.5 inches)90%low
December Weather2°C (35°F)43 mm (1.7 inches)93%low

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