September Weather in Kotlin, Poland

Last updated: August 27, 2025

In September, the average temperature in Kotlin, Poland hovers around 15°C (60°F). Expect a comfortable range, with minimums dipping to 2°C (36°F) and maximums soaring up to 34°C (93°F). During this month, you can anticipate 66 mm (2.6 in) of precipitation spread over about 10 days, coupled with an average humidity of 72%.

September Temperature in Kotlin

In September in Kotlin, the average temperature is 15°C (60°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 2°C (36°F). This wide range makes it a great time to travel, so be sure to pack for both warm and cooler weather!

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

The chart illustrates September temperature patterns in Kotlin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kotlin, September typically has an average temperature of 15°C (60°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (36°F).

Data source: Temperature data for Kotlin generated using information from the Copernicus Climate Change Service.

September Precipitation in Kotlin

In Kotlin in September, the precipitation amount is 66 mm (2.6 in) over the course of 10 days.

September Precipitation Trends in Kotlin

The chart displays monthly precipitation patterns in Kotlin, 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 Kotlin, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Kotlin

In Kotlin in September humidity is 72%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace, creating a slightly muggy atmosphere that can make strolling around a bit sticky. Travelers might find themselves longing for a refreshing breeze, and it’s advisable to stay hydrated while exploring local sights.

September Average Humidity in Kotlin

This chart illustrates the average monthly humidity levels in Kotlin, 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 Kotlin is approximately 72%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kotlin

In Kotlin 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 Kotlin, you can refer to this Hourly UV Index in Kotlin.

Maximum UV Index Levels in Kotlin for September

The chart shows the monthly maximum UV Index (UVI) for Kotlin 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 Kotlin typically reaches 6, which falls under the high exposure category.

Data source: Kotlin 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 Kotlin Compares to Other Months

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

This table compares monthly weather conditions in Kotlin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (33°F)	42 mm (1.6 inches)	90%	low
February Weather	2°C (35°F)	45 mm (1.8 inches)	88%	low
March Weather	4°C (40°F)	39 mm (1.5 inches)	86%	moderate
April Weather	9°C (49°F)	35 mm (1.4 inches)	79%	moderate
May Weather	14°C (57°F)	71 mm (2.8 inches)	65%	high
June Weather	20°C (68°F)	77 mm (3.0 inches)	66%	very high
July Weather	20°C (68°F)	85 mm (3.3 inches)	67%	very high
August Weather	20°C (69°F)	70 mm (2.8 inches)	67%	high
September Weather	15°C (60°F)	66 mm (2.6 inches)	72%	high
October Weather	11°C (52°F)	58 mm (2.3 inches)	83%	moderate
November Weather	6°C (43°F)	35 mm (1.4 inches)	90%	low
December Weather	2°C (36°F)	47 mm (1.8 inches)	92%	low