April Weather in Koszalin, Poland

Last updated: August 27, 2025

In April, the average temperature in Koszalin, Poland hovers around 7°C (45°F), with extremes ranging from a chilly -5°C (24°F) to a pleasant 24°C (75°F). Expect 35 mm (1.4 in) of precipitation spread over 8 days, contributing to an average humidity of 85%. Be prepared for an atmosphere that feels both crisp and refreshing!

April Temperature in Koszalin

In April in Koszalin, the average temperature is 7°C (45°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop to as low as -5°C (24°F). It's advisable to pack layers to accommodate the varying temperatures if you plan to travel during this time.

April Weather in Koszalin: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Koszalin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koszalin, April typically has an average temperature of 7°C (45°F), with highs reaching up to 24°C (75°F) and lows dropping to around -5°C (24°F).

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

April Precipitation in Koszalin

In Koszalin in April, the precipitation amount is 35 mm (1.4 in) over the course of 8 days.

April Precipitation Trends in Koszalin

The chart displays monthly precipitation patterns in Koszalin, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Koszalin, April typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Koszalin

In Koszalin in April, humidity is 85%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

April Average Humidity in Koszalin

This chart illustrates the average monthly humidity levels in Koszalin, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Koszalin is approximately 85%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Koszalin

In Koszalin in April, 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 Koszalin.

Maximum UV Index Levels in Koszalin for April

The chart shows the monthly maximum UV Index (UVI) for Koszalin in April, 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 April, the maximum UV index in Koszalin typically reaches 5, which falls under the moderate exposure category.

Data source: Koszalin April 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 April Weather in Koszalin Compares to Other Months

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

This table compares monthly weather conditions in Koszalin, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	61 mm (2.4 inches)	87%	low
February Weather	2°C (35°F)	50 mm (2.0 inches)	87%	low
March Weather	4°C (39°F)	54 mm (2.1 inches)	87%	moderate
April Weather	7°C (45°F)	35 mm (1.4 inches)	85%	moderate
May Weather	12°C (54°F)	55 mm (2.2 inches)	81%	high
June Weather	18°C (64°F)	51 mm (2.0 inches)	81%	high
July Weather	18°C (65°F)	110 mm (4.3 inches)	81%	high
August Weather	19°C (66°F)	66 mm (2.6 inches)	80%	high
September Weather	15°C (59°F)	81 mm (3.2 inches)	81%	moderate
October Weather	11°C (52°F)	92 mm (3.6 inches)	84%	moderate
November Weather	7°C (44°F)	58 mm (2.3 inches)	86%	low
December Weather	3°C (37°F)	62 mm (2.4 inches)	85%	low