May Weather in Tornio, Finland

Last updated: August 23, 2025

In May, the average temperature in Tornio, Finland hovers around 5°C (42°F). During this month, temperatures can dip to a chilly -6°C (22°F) or rise to a pleasant 19°C (66°F). Expect 52 mm (2.0 in) of precipitation spread over approximately 8 days, contributing to an average humidity of 80%.

May Temperature in Tornio

In May in Tornio, the average temperature is 5°C (42°F). Maximum temperatures can reach up to 19°C (66°F), while minimum temperatures can dip as low as -6°C (22°F). Be sure to pack layers to prepare for the wide range of temperatures while traveling!

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

The chart illustrates May temperature patterns in Tornio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tornio, May typically has an average temperature of 5°C (42°F), with highs reaching up to 19°C (66°F) and lows dropping to around -6°C (22°F).

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

May Precipitation in Tornio

In Tornio in May, the total precipitation amount is 52 mm (2.0 in) recorded over a span of 8 days.

May Precipitation Trends in Tornio

The chart displays monthly precipitation patterns in Tornio, 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 Tornio, May typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Tornio

In Tornio in May humidity is 80%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that can seep into your bones, making outdoor adventures uncomfortable and urging travelers to seek warm shelter often.

May Average Humidity in Tornio

This chart illustrates the average monthly humidity levels in Tornio, 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 Tornio is approximately 80%, 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 Tornio

In Tornio 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 Tornio.

Maximum UV Index Levels in Tornio for May

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

Data source: Tornio 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 Tornio Compares to Other Months

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

This table compares monthly weather conditions in Tornio, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	51 mm (2.0 inches)	99%	low
February Weather	-8°C (17°F)	48 mm (1.9 inches)	97%	low
March Weather	-5°C (24°F)	48 mm (1.9 inches)	93%	low
April Weather	-1°C (31°F)	37 mm (1.4 inches)	86%	moderate
May Weather	5°C (42°F)	52 mm (2.0 inches)	80%	moderate
June Weather	13°C (55°F)	58 mm (2.3 inches)	76%	high
July Weather	17°C (62°F)	61 mm (2.4 inches)	79%	high
August Weather	15°C (59°F)	91 mm (3.6 inches)	83%	moderate
September Weather	10°C (51°F)	87 mm (3.4 inches)	89%	moderate
October Weather	4°C (40°F)	109 mm (4.3 inches)	94%	low
November Weather	0°C (32°F)	82 mm (3.2 inches)	94%	low
December Weather	-4°C (25°F)	73 mm (2.9 inches)	98%	low