May Weather in Ii, Finland

Last updated: August 23, 2025

In May, the average temperature in Ii, Finland hovers around 5°C (42°F), with a minimum dip to -6°C (22°F) and a maximum soaring to 20°C (68°F). Expect 51 mm (2.0 in) of precipitation spread over 8 days, while the air maintains a relatively high humidity level of 81%.

May Temperature in Ii

In May in Ii, the average temperature is 5°C (42°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -6°C (22°F). Travelers should be prepared for a range of weather conditions, from mild days to chilly nights.

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

The chart illustrates May temperature patterns in Ii, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ii, May typically has an average temperature of 5°C (42°F), with highs reaching up to 20°C (68°F) and lows dropping to around -6°C (22°F).

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

May Precipitation in Ii

In Ii in May, the total precipitation amount is 51 mm (2.0 in), spread over a duration of 8 days.

May Precipitation Trends in Ii

The chart displays monthly precipitation patterns in Ii, 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 Ii, May typically receives around 51 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 Ii

In Ii in May, humidity is 81%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures feel more daunting and travel less invigorating.

May Average Humidity in Ii

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

In Ii 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 Ii.

Maximum UV Index Levels in Ii for May

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

Data source: Ii 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 Ii Compares to Other Months

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

This table compares monthly weather conditions in Ii, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	45 mm (1.8 inches)	100%	low
February Weather	-8°C (18°F)	43 mm (1.7 inches)	98%	low
March Weather	-5°C (24°F)	44 mm (1.7 inches)	95%	moderate
April Weather	-1°C (31°F)	39 mm (1.5 inches)	87%	moderate
May Weather	5°C (42°F)	51 mm (2.0 inches)	81%	moderate
June Weather	13°C (56°F)	59 mm (2.3 inches)	77%	high
July Weather	17°C (63°F)	68 mm (2.7 inches)	79%	high
August Weather	15°C (59°F)	92 mm (3.6 inches)	84%	moderate
September Weather	10°C (51°F)	84 mm (3.3 inches)	90%	moderate
October Weather	5°C (41°F)	105 mm (4.1 inches)	95%	low
November Weather	0°C (33°F)	76 mm (3.0 inches)	95%	low
December Weather	-4°C (25°F)	66 mm (2.6 inches)	99%	low