May Weather in Groa, Norway

Last updated: August 27, 2025

In Groa, Norway, the average temperature in May hovers around 5°C (42°F), with a minimum dipping to -9°C (16°F) and a maximum rising to 25°C (78°F). Expect precipitation of about 100 mm (3.9 in) spread over 16 days, contributing to an average humidity of 81%. Be prepared for a mix of chilly days and the occasional warm spell!

May Temperature in Groa

In May in Groa, the average temperature is 5°C (42°F), with maximums reaching up to 25°C (78°F) and minimums dropping as low as -9°C (16°F). It's essential to pack for a variety of weather conditions, as this time of year can showcase both warmth and chill.

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

The chart illustrates May temperature patterns in Groa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Groa, May typically has an average temperature of 5°C (42°F), with highs reaching up to 25°C (78°F) and lows dropping to around -9°C (16°F).

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

May Precipitation in Groa

In Groa in May, the total precipitation amount reaches 100 mm (3.9 in) over the course of 16 days.

May Precipitation Trends in Groa

The chart displays monthly precipitation patterns in Groa, 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 Groa, May typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 16 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 Groa

In Groa in May, humidity is 81%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures feel more daunting and travel less invigorating.

May Average Humidity in Groa

This chart illustrates the average monthly humidity levels in Groa, 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 Groa is approximately 81%, 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 Groa

In Groa in May, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Groa, you can refer to this Hourly UV Index in Groa.

Maximum UV Index Levels in Groa for May

The chart shows the monthly maximum UV Index (UVI) for Groa 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 Groa typically reaches 6, which falls under the high exposure category.

Data source: Groa 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 Groa Compares to Other Months

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

This table compares monthly weather conditions in Groa, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	137 mm (5.4 inches)	93%	low
February Weather	-4°C (25°F)	99 mm (3.9 inches)	92%	low
March Weather	-2°C (28°F)	140 mm (5.5 inches)	89%	moderate
April Weather	1°C (33°F)	140 mm (5.5 inches)	84%	moderate
May Weather	5°C (42°F)	100 mm (3.9 inches)	81%	high
June Weather	11°C (52°F)	128 mm (5.0 inches)	81%	high
July Weather	13°C (55°F)	145 mm (5.7 inches)	81%	high
August Weather	11°C (53°F)	171 mm (6.7 inches)	87%	moderate
September Weather	8°C (47°F)	148 mm (5.8 inches)	89%	moderate
October Weather	3°C (37°F)	179 mm (7.0 inches)	91%	low
November Weather	-2°C (28°F)	118 mm (4.6 inches)	92%	low
December Weather	-4°C (25°F)	150 mm (5.9 inches)	94%	low