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September Weather in Grzmiaca, Poland

Last updated: August 27, 2025

In September, the average temperature in Grzmiaca, Poland hovers around 14°C (58°F). You can expect a minimum chill of 3°C (38°F) and a warm maximum reaching up to 30°C (87°F). Be prepared for some rain, as 69 mm (2.7 in) of precipitation typically falls over 11 days. With an average humidity of 78%, it's a month that blends comfort and occasional dampness.

September Temperature in Grzmiaca

In September in Grzmiaca, the average temperature is 14°C (58°F). Maximum temperatures can reach 30°C (87°F), while minimums can drop as low as 3°C (38°F). This variability makes it important to pack for both warm and cool weather when traveling during this time.

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

The chart illustrates September temperature patterns in Grzmiaca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grzmiaca, September typically has an average temperature of 14°C (58°F), with highs reaching up to 30°C (87°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec333438455464646557504235
Data source: Temperature data for Grzmiaca 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 Grzmiaca

In Grzmiaca in September, the total precipitation amount is 69 mm (2.7 in) spread across 11 days.

September Precipitation Trends in Grzmiaca

The chart displays monthly precipitation patterns in Grzmiaca, 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 Grzmiaca, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec5947544361601116469804754
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grzmiaca

In Grzmiaca in September, humidity is 78%. With an average temperature of 14°C (58°F), this humidity feels like a damp embrace, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat more than usual while exploring.

September Average Humidity in Grzmiaca

This chart illustrates the average monthly humidity levels in Grzmiaca, 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 Grzmiaca is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%87%81%67%67%67%67%78%84%89%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grzmiaca

In Grzmiaca 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 Grzmiaca.

Maximum UV Index Levels in Grzmiaca for September

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

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

This table compares monthly weather conditions in Grzmiaca, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)59 mm (2.3 inches)90%low
February Weather1°C (34°F)47 mm (1.9 inches)90%low
March Weather3°C (38°F)54 mm (2.1 inches)87%moderate
April Weather7°C (46°F)42 mm (1.7 inches)80%moderate
May Weather12°C (54°F)60 mm (2.4 inches)67%high
June Weather18°C (64°F)60 mm (2.4 inches)67%very high
July Weather18°C (64°F)111 mm (4.4 inches)67%very high
August Weather18°C (65°F)64 mm (2.5 inches)67%high
September Weather14°C (58°F)69 mm (2.7 inches)78%moderate
October Weather10°C (50°F)80 mm (3.2 inches)84%moderate
November Weather5°C (42°F)47 mm (1.8 inches)89%low
December Weather2°C (35°F)53 mm (2.1 inches)92%low

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