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September Weather in Bartoszyce, Poland

Last updated: August 27, 2025

In September, the average temperature in Bartoszyce, Poland is a pleasant 14°C (58°F). You can expect a range with minimums dropping to 2°C (36°F) and maximums peaking at 29°C (84°F). Be prepared for some rain, as the area typically sees 69 mm (2.7 in) of precipitation over about 10 days. With an average humidity of 81%, this creates a uniquely comfortable atmosphere for your visit.

September Temperature in Bartoszyce

In September, Bartoszyce experiences an average temperature of 14°C (58°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as 2°C (36°F). Overall, it's advisable to pack layers to accommodate the varying temperatures while exploring this destination.

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

The chart illustrates September temperature patterns in Bartoszyce, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bartoszyce, September typically has an average temperature of 14°C (58°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec313237455464656457494134
Data source: Temperature data for Bartoszyce 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 Bartoszyce

In Bartoszyce in September, the precipitation amount is 69 mm (2.7 in) spread over a period of 10 days.

September Precipitation Trends in Bartoszyce

The chart displays monthly precipitation patterns in Bartoszyce, 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 Bartoszyce, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4741484282591077769744253
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bartoszyce

In Bartoszyce in September, humidity is 81%. With an average temperature of 14°C (58°F), this humidity feels like a warm blanket wrapping around you, making outdoor adventures sticky and challenging, while also providing a lush, vibrant atmosphere perfect for exploring.

September Average Humidity in Bartoszyce

This chart illustrates the average monthly humidity levels in Bartoszyce, 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 Bartoszyce is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%89%85%74%75%76%76%81%89%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bartoszyce

In Bartoszyce 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 Bartoszyce.

Maximum UV Index Levels in Bartoszyce for September

The chart shows the monthly maximum UV Index (UVI) for Bartoszyce 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 Bartoszyce typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124567765321
Data source: Bartoszyce 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 Bartoszyce Compares to Other Months

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

This table compares monthly weather conditions in Bartoszyce, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)47 mm (1.8 inches)91%low
February Weather0°C (32°F)41 mm (1.6 inches)90%low
March Weather3°C (37°F)48 mm (1.9 inches)89%moderate
April Weather7°C (45°F)42 mm (1.7 inches)85%moderate
May Weather12°C (54°F)82 mm (3.2 inches)74%high
June Weather18°C (64°F)59 mm (2.3 inches)75%high
July Weather18°C (65°F)107 mm (4.2 inches)76%high
August Weather18°C (65°F)77 mm (3.0 inches)76%high
September Weather14°C (58°F)69 mm (2.7 inches)81%moderate
October Weather10°C (50°F)74 mm (2.9 inches)89%moderate
November Weather5°C (42°F)42 mm (1.7 inches)91%low
December Weather1°C (34°F)53 mm (2.1 inches)92%low

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