May Weather in Janakkala, Finland

Last updated: August 23, 2025

In May, the average temperature in Janakkala, Finland is a comfortable 10°C (50°F). However, temperatures can vary widely, with a minimum of -4°C (26°F) and a maximum of 28°C (82°F). Expect about 60 mm (2.4 in) of precipitation spread over 10 days, while maintaining an average humidity of 75%. Whether you're bracing for a chilly day or a warm afternoon, be prepared for a mix of weather!

May Temperature in Janakkala

In May in Janakkala, the average temperature is 10°C (50°F). Maximums can reach 28°C (82°F), while minimums can drop to as low as -4°C (26°F). Pack for a wide range of temperatures to ensure a comfortable experience while exploring the area.

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

The chart illustrates May temperature patterns in Janakkala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Janakkala, May typically has an average temperature of 10°C (50°F), with highs reaching up to 28°C (82°F) and lows dropping to around -4°C (26°F).

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

May Precipitation in Janakkala

In Janakkala in May, the precipitation amount is 60 mm (2.4 in) accumulated over a period of 10 days.

May Precipitation Trends in Janakkala

The chart displays monthly precipitation patterns in Janakkala, 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 Janakkala, May typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 10 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 Janakkala

In Janakkala in May humidity is 75%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and necessitating extra layers for warmth and comfort.

May Average Humidity in Janakkala

This chart illustrates the average monthly humidity levels in Janakkala, 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 Janakkala 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 Janakkala

In Janakkala 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 Janakkala.

Maximum UV Index Levels in Janakkala for May

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

Data source: Janakkala 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 Janakkala Compares to Other Months

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

This table compares monthly weather conditions in Janakkala, 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 (25°F)	48 mm (1.9 inches)	97%	low
February Weather	-5°C (24°F)	41 mm (1.6 inches)	95%	low
March Weather	-2°C (29°F)	43 mm (1.7 inches)	93%	moderate
April Weather	3°C (38°F)	46 mm (1.8 inches)	86%	moderate
May Weather	10°C (50°F)	60 mm (2.4 inches)	75%	moderate
June Weather	16°C (61°F)	71 mm (2.8 inches)	75%	high
July Weather	17°C (63°F)	85 mm (3.4 inches)	80%	high
August Weather	16°C (61°F)	80 mm (3.2 inches)	83%	moderate
September Weather	11°C (52°F)	65 mm (2.6 inches)	90%	moderate
October Weather	6°C (43°F)	75 mm (2.9 inches)	93%	low
November Weather	2°C (36°F)	52 mm (2.1 inches)	94%	low
December Weather	-2°C (29°F)	63 mm (2.5 inches)	95%	low