May Weather in Vantaa, Finland

Last updated: August 23, 2025

In May, the average temperature in Vantaa, Finland hovers around 10°C (50°F), with extremes ranging from a chilly -3°C (27°F) to a warm 27°C (80°F). Expect about 56 mm (2.2 in) of precipitation over 10 days, and enjoy a cozy atmosphere with an average humidity of 75%.

May Temperature in Vantaa

In May in Vantaa, the average temperature is 10°C (50°F). Maximum temperatures can reach 27°C (80°F), while minimums can dip as low as -3°C (27°F). This variation makes it essential for travelers to prepare for both warm days and chilly evenings.

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

The chart illustrates May temperature patterns in Vantaa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vantaa, May typically has an average temperature of 10°C (50°F), with highs reaching up to 27°C (80°F) and lows dropping to around -3°C (27°F).

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

May Precipitation in Vantaa

In Vantaa in May, the precipitation amount is 56 mm (2.2 in) over the course of 10 days.

May Precipitation Trends in Vantaa

The chart displays monthly precipitation patterns in Vantaa, 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 Vantaa, May typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 10 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 Vantaa

In Vantaa in May humidity is 75%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and necessitating extra layers for warmth and comfort.

May Average Humidity in Vantaa

This chart illustrates the average monthly humidity levels in Vantaa, 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 Vantaa is approximately 75%, 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 Vantaa

In Vantaa 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 Vantaa.

Maximum UV Index Levels in Vantaa for May

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

Data source: Vantaa 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 Vantaa Compares to Other Months

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

This table compares monthly weather conditions in Vantaa, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (28°F)	55 mm (2.2 inches)	97%	low
February Weather	-3°C (26°F)	48 mm (1.9 inches)	95%	low
March Weather	-1°C (31°F)	52 mm (2.0 inches)	93%	moderate
April Weather	4°C (39°F)	48 mm (1.9 inches)	86%	moderate
May Weather	10°C (50°F)	56 mm (2.2 inches)	75%	moderate
June Weather	16°C (62°F)	61 mm (2.4 inches)	75%	high
July Weather	18°C (65°F)	91 mm (3.6 inches)	80%	high
August Weather	17°C (62°F)	83 mm (3.3 inches)	83%	moderate
September Weather	12°C (54°F)	76 mm (3.0 inches)	90%	moderate
October Weather	7°C (45°F)	89 mm (3.5 inches)	93%	low
November Weather	3°C (38°F)	62 mm (2.5 inches)	94%	low
December Weather	-1°C (31°F)	73 mm (2.9 inches)	95%	low