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September Weather in Swiecie, Poland

Last updated: August 27, 2025

In September, the average temperature in Swiecie, Poland is a pleasant 15°C (58°F). Expect a range from a chilly 2°C (36°F) to a warm 32°C (89°F). During this month, you'll likely encounter about 70 mm (2.7 in) of precipitation spread over 9 days, and enjoy an average humidity level of around 75%.

September Temperature in Swiecie

In September in Swiecie, the average temperature is 15°C (58°F). Maximum temperatures can reach 32°C (89°F), while minimum temperatures can drop as low as 2°C (36°F). It's advisable to pack layers and prepare for a range of weather conditions while traveling during this time.

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

The chart illustrates September temperature patterns in Swiecie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Swiecie, September typically has an average temperature of 15°C (58°F), with highs reaching up to 32°C (89°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec323338465565666658504235
Data source: Temperature data for Swiecie 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 Swiecie

In Swiecie in September, the precipitation amount is 70 mm (2.7 in) over the course of 9 days.

September Precipitation Trends in Swiecie

The chart displays monthly precipitation patterns in Swiecie, 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 Swiecie, September typically receives around 70 mm (2.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec4139403883791106470633745
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Swiecie

In Swiecie 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 Swiecie

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

In Swiecie 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 Swiecie.

Maximum UV Index Levels in Swiecie for September

The chart shows the monthly maximum UV Index (UVI) for Swiecie 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 Swiecie typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568865321
Data source: Swiecie 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 Swiecie Compares to Other Months

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

This table compares monthly weather conditions in Swiecie, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)41 mm (1.6 inches)91%low
February Weather1°C (33°F)39 mm (1.5 inches)90%low
March Weather3°C (39°F)40 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)79 mm (3.1 inches)61%very high
July Weather19°C (66°F)110 mm (4.3 inches)63%very high
August Weather19°C (66°F)64 mm (2.5 inches)65%high
September Weather15°C (58°F)70 mm (2.7 inches)75%moderate
October Weather10°C (51°F)63 mm (2.5 inches)85%moderate
November Weather6°C (42°F)37 mm (1.5 inches)90%low
December Weather2°C (35°F)45 mm (1.8 inches)93%low

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