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May Weather in Merimasku, Finland

Last updated: August 23, 2025

In May, the average temperature in Merimasku, Finland is a cool 9°C (49°F). Expect temperatures to dip as low as -3°C (27°F) at night, while daytime highs can reach a pleasant 26°C (79°F). With an average humidity of 77%, it's a good idea to prepare for moisture, as 38 mm (1.5 in) of precipitation is expected over 7 days.

May Temperature in Merimasku

In May in Merimasku, the average temperature is 9°C (49°F). Maximums can reach 26°C (79°F) and minimums can be as low as -3°C (27°F). This variation in temperature makes it essential to pack layers for your travels to Merimasku.

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

The chart illustrates May temperature patterns in Merimasku, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merimasku, May typically has an average temperature of 9°C (49°F), with highs reaching up to 26°C (79°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec302732394960646255464033
Data source: Temperature data for Merimasku 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 Merimasku

In Merimasku in May, the precipitation amount is 38 mm (1.5 in) over the course of 7 days.

May Precipitation Trends in Merimasku

The chart displays monthly precipitation patterns in Merimasku, 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 Merimasku, May typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec474143293840587067875980
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Merimasku

In Merimasku in May humidity is 77%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making outdoor explorations feel colder and more uncomfortable than the thermometer suggests.

May Average Humidity in Merimasku

This chart illustrates the average monthly humidity levels in Merimasku, 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 Merimasku is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%89%85%77%78%78%79%86%90%91%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Merimasku

In Merimasku 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 Merimasku.

Maximum UV Index Levels in Merimasku for May

The chart shows the monthly maximum UV Index (UVI) for Merimasku 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 Merimasku typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Merimasku 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 Merimasku Compares to Other Months

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

This table compares monthly weather conditions in Merimasku, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)47 mm (1.8 inches)92%low
February Weather-3°C (27°F)41 mm (1.6 inches)90%low
March Weather0°C (32°F)43 mm (1.7 inches)89%moderate
April Weather4°C (39°F)29 mm (1.1 inches)85%moderate
May Weather9°C (49°F)38 mm (1.5 inches)77%moderate
June Weather16°C (61°F)40 mm (1.6 inches)78%high
July Weather18°C (65°F)58 mm (2.3 inches)78%high
August Weather17°C (63°F)70 mm (2.7 inches)79%moderate
September Weather13°C (55°F)67 mm (2.6 inches)86%moderate
October Weather8°C (46°F)87 mm (3.4 inches)90%low
November Weather4°C (40°F)59 mm (2.3 inches)91%low
December Weather1°C (33°F)80 mm (3.1 inches)89%low

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