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May Weather in Kustavi, Finland

Last updated: August 23, 2025

In May, the average temperature in Kustavi, Finland is a crisp 8°C (47°F), with a minimum dipping to 1°C (33°F) and a maximum reaching up to 18°C (64°F). Expect some moisture, as precipitation amounts to 37 mm (1.5 in) over approximately 6 days. With an average humidity of 77%, it's a month that invites you to bundle up and enjoy the fresh air!

May Temperature in Kustavi

In May in Kustavi, the average temperature is 8°C (47°F). Maximums can reach 18°C (64°F) and minimums can be as low as 1°C (33°F). This mild climate makes Kustavi a great destination for travelers looking to explore without extreme weather conditions.

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

The chart illustrates May temperature patterns in Kustavi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kustavi, May typically has an average temperature of 8°C (47°F), with highs reaching up to 18°C (64°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec322932384657636356484235
Data source: Temperature data for Kustavi 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 Kustavi

In Kustavi in May, the precipitation amount is 37 mm (1.5 in) over the course of 6 days.

May Precipitation Trends in Kustavi

The chart displays monthly precipitation patterns in Kustavi, 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 Kustavi, May typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec4640402737364767771076987
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Kustavi

In Kustavi in May, humidity is 77%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that can make even short walks outside feel uncomfortable, often clinging to your skin and making you long for warmer, drier conditions.

May Average Humidity in Kustavi

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

In Kustavi 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 Kustavi.

Maximum UV Index Levels in Kustavi for May

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

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

This table compares monthly weather conditions in Kustavi, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)46 mm (1.8 inches)92%low
February Weather-2°C (29°F)40 mm (1.6 inches)90%low
March Weather0°C (33°F)40 mm (1.6 inches)89%moderate
April Weather3°C (38°F)27 mm (1.1 inches)85%moderate
May Weather8°C (47°F)37 mm (1.5 inches)77%moderate
June Weather14°C (58°F)36 mm (1.4 inches)78%high
July Weather17°C (63°F)47 mm (1.9 inches)78%high
August Weather17°C (63°F)67 mm (2.6 inches)79%moderate
September Weather13°C (56°F)77 mm (3.0 inches)86%moderate
October Weather9°C (48°F)107 mm (4.2 inches)90%low
November Weather5°C (42°F)69 mm (2.7 inches)91%low
December Weather2°C (36°F)87 mm (3.4 inches)89%low

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