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September Weather in Slesin, Poland

Last updated: August 27, 2025

In Slesin, Poland, the average temperature in September is a mild 15°C (58°F), with extremes that can dip to a chilly 1°C (35°F) or soar up to a sizzling 33°C (91°F). During this month, you can expect around 64 mm (2.5 in) of precipitation over approximately 10 days, contributing to an average humidity of 75%. Be prepared for a mix of weather!

September Temperature in Slesin

In September in Slesin, the average temperature is 15°C (58°F). Maximums can reach 33°C (91°F), while minimums can drop to as low as 1°C (35°F). This variability makes it advisable for travelers to pack for both warm and chilly weather conditions.

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

The chart illustrates September temperature patterns in Slesin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Slesin, September typically has an average temperature of 15°C (58°F), with highs reaching up to 33°C (91°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec333439475565666658504235
Data source: Temperature data for Slesin 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 Slesin

In Slesin in September, the precipitation amount is 64 mm (2.5 in) over a span of 10 days.

September Precipitation Trends in Slesin

The chart displays monthly precipitation patterns in Slesin, 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 Slesin, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4440423873781056464663943
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Slesin

In Slesin 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 Slesin

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

In Slesin 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 Slesin.

Maximum UV Index Levels in Slesin for September

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

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

This table compares monthly weather conditions in Slesin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)43 mm (1.7 inches)91%low
February Weather1°C (34°F)40 mm (1.6 inches)90%low
March Weather4°C (39°F)42 mm (1.6 inches)87%moderate
April Weather8°C (47°F)38 mm (1.5 inches)79%moderate
May Weather13°C (55°F)73 mm (2.9 inches)63%high
June Weather18°C (65°F)78 mm (3.1 inches)61%very high
July Weather19°C (66°F)105 mm (4.1 inches)63%very high
August Weather19°C (66°F)64 mm (2.5 inches)65%high
September Weather15°C (58°F)64 mm (2.5 inches)75%moderate
October Weather10°C (51°F)65 mm (2.6 inches)85%moderate
November Weather6°C (42°F)39 mm (1.5 inches)90%low
December Weather2°C (35°F)43 mm (1.7 inches)93%low

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