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May Weather in Yli-Ii, Finland

Last updated: August 23, 2025

In Yli-Ii, Finland, the average temperature in May hovers around 7°C (45°F). Expect temperature variations ranging from a chilly -7°C (20°F) to a warm 27°C (80°F). Precipitation during this month totals 51 mm (2.0 in), spread across approximately 9 days, contributing to an average humidity level of 81%.

May Temperature in Yli-Ii

In May in Yli-Ii, the average temperature is 7°C (45°F). Maximum temperatures can reach 27°C (80°F), while minimums can drop as low as -7°C (20°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates May temperature patterns in Yli-Ii, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yli-Ii, May typically has an average temperature of 7°C (45°F), with highs reaching up to 27°C (80°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec181624334557635748393023
Data source: Temperature data for Yli-Ii generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Yli-Ii

In Yli-Ii in May, the total precipitation amount is 51 mm (2.0 in) spread over 9 days.

May Precipitation Trends in Yli-Ii

The chart displays monthly precipitation patterns in Yli-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 Yli-Ii, May typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec454346415166779576866763
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Yli-Ii

In Yli-Ii in May, humidity is 81%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill wrapping around you, making outdoor adventures slightly uncomfortable and requiring extra layers to stay warm while exploring.

May Average Humidity in Yli-Ii

This chart illustrates the average monthly humidity levels in Yli-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 Yli-Ii is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec100%98%95%87%81%77%79%84%90%95%95%99%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Yli-Ii

In Yli-Ii in May, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Yli-Ii for better planning.

Maximum UV Index Levels in Yli-Ii for May

The chart shows the monthly maximum UV Index (UVI) for Yli-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 Yli-Ii typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112346643211
Data source: Yli-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 Yli-Ii Compares to Other Months

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

This table compares monthly weather conditions in Yli-Ii, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)45 mm (1.8 inches)100%low
February Weather-9°C (17°F)42 mm (1.7 inches)98%low
March Weather-4°C (25°F)46 mm (1.8 inches)95%low
April Weather1°C (34°F)41 mm (1.6 inches)87%moderate
May Weather7°C (45°F)51 mm (2.0 inches)81%moderate
June Weather14°C (58°F)66 mm (2.6 inches)77%high
July Weather17°C (63°F)77 mm (3.0 inches)79%high
August Weather14°C (58°F)95 mm (3.7 inches)84%moderate
September Weather9°C (49°F)76 mm (3.0 inches)90%moderate
October Weather4°C (39°F)86 mm (3.4 inches)95%low
November Weather-1°C (30°F)67 mm (2.6 inches)95%low
December Weather-5°C (23°F)63 mm (2.5 inches)99%low

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