May Weather in Kouvola, Finland

Last updated: August 23, 2025

In May, the average temperature in Kouvola, Finland hovers around 10°C (51°F). Temperatures can be quite variable, with a minimum of -4°C (25°F) and a maximum reaching 28°C (83°F). Expect around 50 mm (2.0 in) of precipitation over 9 days, accompanied by an average humidity level of 75%. Stay prepared for a mix of weather!

May Temperature in Kouvola

In May in Kouvola, the average temperature is 10°C (51°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -4°C (25°F). This variation in temperatures makes it essential for travelers to pack accordingly to enjoy their stay comfortably.

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

The chart illustrates May temperature patterns in Kouvola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kouvola, May typically has an average temperature of 10°C (51°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (25°F).

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

May Precipitation in Kouvola

In Kouvola in May, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.

May Precipitation Trends in Kouvola

The chart displays monthly precipitation patterns in Kouvola, 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 Kouvola, May typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 9 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 Kouvola

In Kouvola in May humidity is 75%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket wrapping around you, making every step outside feel laborious and damp, perfect for cozy indoor exploration but challenging for outdoor adventures.

May Average Humidity in Kouvola

This chart illustrates the average monthly humidity levels in Kouvola, 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 Kouvola is approximately 75%, 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 Kouvola

In Kouvola in May, 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 Kouvola.

Maximum UV Index Levels in Kouvola for May

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

Data source: Kouvola 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 Kouvola Compares to Other Months

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

This table compares monthly weather conditions in Kouvola, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	52 mm (2.0 inches)	98%	low
February Weather	-5°C (24°F)	52 mm (2.1 inches)	96%	low
March Weather	-2°C (29°F)	46 mm (1.8 inches)	93%	moderate
April Weather	4°C (39°F)	44 mm (1.7 inches)	87%	moderate
May Weather	10°C (51°F)	50 mm (2.0 inches)	75%	moderate
June Weather	16°C (62°F)	52 mm (2.0 inches)	74%	high
July Weather	18°C (64°F)	77 mm (3.0 inches)	80%	high
August Weather	16°C (61°F)	82 mm (3.2 inches)	85%	moderate
September Weather	11°C (53°F)	61 mm (2.4 inches)	90%	moderate
October Weather	6°C (44°F)	75 mm (2.9 inches)	94%	low
November Weather	2°C (36°F)	56 mm (2.2 inches)	94%	low
December Weather	-2°C (29°F)	76 mm (3.0 inches)	96%	low