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May Weather in Ilomantsi, Finland

Last updated: August 23, 2025

In Ilomantsi, Finland during May, the average temperature hovers around 9°C (48°F). Be prepared for a temperature range where it can dip as low as -6°C (22°F) or soar to a maximum of 31°C (88°F). Expect about 60 mm (2.4 in) of precipitation spread over 12 days, complemented by an average humidity of 79%.

May Temperature in Ilomantsi

In May in Ilomantsi, the average temperature is 9°C (48°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -6°C (22°F). This diverse temperature range makes Ilomantsi an exciting destination for travelers, catering to both those who enjoy mild weather and those who prefer a chillier climate.

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

The chart illustrates May temperature patterns in Ilomantsi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilomantsi, May typically has an average temperature of 9°C (48°F), with highs reaching up to 31°C (88°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec181825354759625849393123
Data source: Temperature data for Ilomantsi 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 Ilomantsi

In Ilomantsi in May, the precipitation amount is 60 mm (2.4 in) over a span of 12 days.

May Precipitation Trends in Ilomantsi

The chart displays monthly precipitation patterns in Ilomantsi, 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 Ilomantsi, May typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4950544661609510578856171
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Ilomantsi

In Ilomantsi in May humidity is 79%. With an average temperature of 9°C (48°F), this humidity feels like a chilly mist wrapping around you, making outdoor activities brisk yet invigorating, but it can also leave you feeling damp and slightly chilled if you're not dressed appropriately for the conditions.

May Average Humidity in Ilomantsi

This chart illustrates the average monthly humidity levels in Ilomantsi, 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 Ilomantsi is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec99%98%95%88%79%76%83%89%92%95%95%97%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ilomantsi

In Ilomantsi 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 Ilomantsi.

Maximum UV Index Levels in Ilomantsi for May

The chart shows the monthly maximum UV Index (UVI) for Ilomantsi 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 Ilomantsi typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Ilomantsi 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 Ilomantsi Compares to Other Months

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

This table compares monthly weather conditions in Ilomantsi, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (19°F)49 mm (1.9 inches)99%low
February Weather-8°C (18°F)50 mm (2.0 inches)98%low
March Weather-4°C (25°F)54 mm (2.1 inches)95%moderate
April Weather1°C (35°F)46 mm (1.8 inches)88%moderate
May Weather9°C (48°F)60 mm (2.4 inches)79%moderate
June Weather15°C (60°F)60 mm (2.3 inches)76%high
July Weather17°C (62°F)95 mm (3.7 inches)83%high
August Weather15°C (59°F)105 mm (4.1 inches)89%moderate
September Weather9°C (49°F)78 mm (3.1 inches)91%moderate
October Weather4°C (40°F)85 mm (3.4 inches)95%low
November Weather0°C (31°F)61 mm (2.4 inches)95%low
December Weather-5°C (24°F)71 mm (2.8 inches)97%low

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