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September Weather in Chelmno, Poland

Last updated: August 27, 2025

In Chelmno, Poland, the average temperature in September hovers around 15°C (59°F), with a minimum dipping to 2°C (36°F) and a maximum soaring up to 32°C (90°F). During this month, expect 68 mm (2.7 in) of precipitation spread over 10 days, contributing to an average humidity of 75%. Prepare for a mix of mild warmth and refreshing rainfall!

September Temperature in Chelmno

In September in Chelmno, the average temperature is 15°C (59°F). Maximum temperatures can reach 32°C (90°F), while minimums can drop as low as 2°C (36°F). Be prepared for a wide range of temperatures when traveling during this month.

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

The chart illustrates September temperature patterns in Chelmno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chelmno, September typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (90°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec323339475565666658514235
Data source: Temperature data for Chelmno 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 Chelmno

In Chelmno in September, the precipitation amount is 68 mm (2.7 in) over a span of 10 days.

September Precipitation Trends in Chelmno

The chart displays monthly precipitation patterns in Chelmno, 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 Chelmno, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4241393884741106668613845
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chelmno

In Chelmno in September, humidity is 75%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it feel more oppressive than refreshing, which can be a challenge for travelers seeking comfort while exploring the area.

September Average Humidity in Chelmno

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

In Chelmno 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 Chelmno.

Maximum UV Index Levels in Chelmno for September

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

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

This table compares monthly weather conditions in Chelmno, 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 (33°F)41 mm (1.6 inches)90%low
March Weather4°C (39°F)39 mm (1.6 inches)87%moderate
April Weather8°C (47°F)38 mm (1.5 inches)79%moderate
May Weather13°C (55°F)83 mm (3.3 inches)63%high
June Weather18°C (65°F)74 mm (2.9 inches)61%very high
July Weather19°C (66°F)110 mm (4.3 inches)63%very high
August Weather19°C (66°F)66 mm (2.6 inches)65%high
September Weather15°C (59°F)68 mm (2.7 inches)75%moderate
October Weather10°C (51°F)61 mm (2.4 inches)85%moderate
November Weather6°C (42°F)38 mm (1.5 inches)90%low
December Weather2°C (35°F)45 mm (1.8 inches)93%low

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