May Weather in Koszalin, Poland

Last updated: August 27, 2025

The average temperature in Koszalin, Poland during May is a mild 12°C (54°F), with temperatures ranging from a cool 0°C (32°F) to a warm 28°C (82°F). Expect 55 mm (2.2 in) of precipitation over about 12 days, contributing to an average humidity level of 81%. Be prepared for varying weather as you enjoy your time in this charming locale!

May Temperature in Koszalin

In May in Koszalin, the average temperature is 12°C (54°F), with maximums reaching up to 28°C (82°F) and minimums dropping as low as 0°C (32°F). Be prepared for varying weather conditions during your travels, as it can be quite chilly at night while warm during the day.

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

The chart illustrates May 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, May typically has an average temperature of 12°C (54°F), with highs reaching up to 28°C (82°F) and lows dropping to around 0°C (32°F).

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

May Precipitation in Koszalin

In Koszalin in May, the total precipitation amount is 55 mm (2.2 in) over a span of 12 days.

May Precipitation Trends in Koszalin

The chart displays monthly precipitation patterns in Koszalin, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Koszalin, May typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Koszalin

In Koszalin in May humidity is 81%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket enveloping you, making travel sluggish and uncomfortable as you battle the stickiness while trying to enjoy your surroundings.

May Average Humidity in Koszalin

This chart illustrates the average monthly humidity levels in Koszalin, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Koszalin is approximately 81%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Koszalin

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

Maximum UV Index Levels in Koszalin for May

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

Data source: Koszalin May 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 May 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 May’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 May’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