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September Weather in Kostomloty, Poland

Last updated: August 27, 2025

In September, the average temperature in Kostomloty, Poland is a comfortable 15°C (59°F). Expect temperatures to range from a chilly 2°C (36°F) at night to a warm 30°C (87°F) during the day. With an average precipitation of 81 mm (3.2 in) spread over 10 days, it's wise to be prepared for some rain. Additionally, the average humidity sits at a pleasant 72%, ensuring a refreshing atmosphere throughout the month.

September Temperature in Kostomloty

In September in Kostomloty, the average temperature is 15°C (59°F). Maximums can reach 30°C (87°F), and minimums can drop as low as 2°C (36°F). This variation in temperatures makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates September temperature patterns in Kostomloty, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kostomloty, September typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (87°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec343640485666666859524337
Data source: Temperature data for Kostomloty 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 Kostomloty

In Kostomloty in September, the precipitation amount is 81 mm (3.2 in) over a span of 10 days.

September Precipitation Trends in Kostomloty

The chart displays monthly precipitation patterns in Kostomloty, 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 Kostomloty, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec394541427874788981683751
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kostomloty

In Kostomloty in September humidity is 72%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket wrapping around you, creating a sultry atmosphere that can make traveling a bit uncomfortable. The stickiness in the air can leave you feeling sluggish, so it’s advisable to stay hydrated and take breaks often while exploring.

September Average Humidity in Kostomloty

This chart illustrates the average monthly humidity levels in Kostomloty, 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 Kostomloty is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%84%78%63%63%61%65%72%80%87%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kostomloty

In Kostomloty in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Kostomloty, you can refer to this Hourly UV Index in Kostomloty.

Maximum UV Index Levels in Kostomloty for September

The chart shows the monthly maximum UV Index (UVI) for Kostomloty 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 Kostomloty typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876321
Data source: Kostomloty 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 Kostomloty Compares to Other Months

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

This table compares monthly weather conditions in Kostomloty, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)39 mm (1.5 inches)89%low
February Weather2°C (36°F)45 mm (1.8 inches)87%low
March Weather5°C (41°F)41 mm (1.6 inches)84%moderate
April Weather9°C (49°F)42 mm (1.7 inches)78%moderate
May Weather13°C (56°F)78 mm (3.1 inches)63%high
June Weather19°C (66°F)74 mm (2.9 inches)63%very high
July Weather19°C (67°F)78 mm (3.1 inches)61%very high
August Weather20°C (68°F)89 mm (3.5 inches)65%high
September Weather15°C (59°F)81 mm (3.2 inches)72%high
October Weather11°C (52°F)68 mm (2.7 inches)80%moderate
November Weather6°C (43°F)37 mm (1.4 inches)87%low
December Weather3°C (37°F)50 mm (2.0 inches)91%low

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