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September Weather in Ilawa, Poland

Last updated: August 27, 2025

In Ilawa, Poland, the average temperature for September hovers around 14°C (58°F). During this time, you can expect temperatures to range from a brisk 2°C (36°F) to a warm 30°C (87°F). Be prepared for some rain, as the monthly precipitation averages 74 mm (2.9 in) spread over 12 days, contributing to an average humidity level of 75%.

September Temperature in Ilawa

In September in Ilawa, the average temperature is 14°C (58°F), with maximums reaching 30°C (87°F) and minimums dropping as low as 2°C (36°F). This wide range makes it important for travelers to pack accordingly for varying weather conditions.

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

The chart illustrates September temperature patterns in Ilawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilawa, September typically has an average temperature of 14°C (58°F), with highs reaching up to 30°C (87°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec313238465464656558504134
Data source: Temperature data for Ilawa 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 Ilawa

In Ilawa in September, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.

September Precipitation Trends in Ilawa

The chart displays monthly precipitation patterns in Ilawa, 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 Ilawa, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec484745388273967274684053
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ilawa

In Ilawa in September humidity is 75%. With an average temperature of 14°C (58°F), this humidity feels like a lingering blanket of warmth, making travel both refreshing and a bit stifling, as the moisture in the air may leave you feeling slightly sticky while enjoying outdoor adventures.

September Average Humidity in Ilawa

This chart illustrates the average monthly humidity levels in Ilawa, 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 Ilawa 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 Ilawa

In Ilawa 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 Ilawa.

Maximum UV Index Levels in Ilawa for September

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

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

This table compares monthly weather conditions in Ilawa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)48 mm (1.9 inches)91%low
February Weather0°C (32°F)47 mm (1.8 inches)90%low
March Weather3°C (38°F)45 mm (1.8 inches)87%moderate
April Weather8°C (46°F)38 mm (1.5 inches)79%moderate
May Weather12°C (55°F)82 mm (3.2 inches)63%high
June Weather18°C (65°F)73 mm (2.9 inches)61%very high
July Weather18°C (65°F)96 mm (3.8 inches)63%very high
August Weather19°C (66°F)72 mm (2.8 inches)65%high
September Weather14°C (58°F)74 mm (2.9 inches)75%moderate
October Weather10°C (50°F)68 mm (2.7 inches)85%moderate
November Weather5°C (42°F)40 mm (1.6 inches)90%low
December Weather1°C (34°F)53 mm (2.1 inches)93%low

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