May Weather in Lillestrom, Norway

Last updated: August 27, 2025

In May, the average temperature in Lillestrom, Norway hovers around 11°C (51°F). Expect a range from a chilly -3°C (27°F) to a warm 29°C (85°F). During this month, you can anticipate about 85 mm (3.3 in) of precipitation spread over 12 days, contributing to an average humidity of 73%.

May Temperature in Lillestrom

In May in Lillestrom, the average temperature is 11°C (51°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as -3°C (27°F). This makes it advisable to pack layers to prepare for varying weather conditions during your travels.

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

The chart illustrates May temperature patterns in Lillestrom, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lillestrom, May typically has an average temperature of 11°C (51°F), with highs reaching up to 29°C (85°F) and lows dropping to around -3°C (27°F).

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

May Precipitation in Lillestrom

In Lillestrom in May, the precipitation amount is 85 mm (3.3 in) over a duration of 12 days.

May Precipitation Trends in Lillestrom

The chart displays monthly precipitation patterns in Lillestrom, 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 Lillestrom, May typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 12 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 Lillestrom

In Lillestrom in May humidity is 73%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill that penetrates your clothes, making it a bit uncomfortable for traveling.

May Average Humidity in Lillestrom

This chart illustrates the average monthly humidity levels in Lillestrom, 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 Lillestrom is approximately 73%, 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 Lillestrom

In Lillestrom 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 Lillestrom.

Maximum UV Index Levels in Lillestrom for May

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

Data source: Lillestrom 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 Lillestrom Compares to Other Months

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

This table compares monthly weather conditions in Lillestrom, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	55 mm (2.2 inches)	94%	low
February Weather	-2°C (28°F)	59 mm (2.3 inches)	92%	low
March Weather	1°C (34°F)	60 mm (2.3 inches)	89%	moderate
April Weather	5°C (42°F)	37 mm (1.4 inches)	82%	moderate
May Weather	11°C (51°F)	85 mm (3.3 inches)	73%	moderate
June Weather	16°C (61°F)	82 mm (3.2 inches)	71%	high
July Weather	17°C (64°F)	99 mm (3.9 inches)	72%	high
August Weather	16°C (60°F)	90 mm (3.6 inches)	77%	moderate
September Weather	12°C (53°F)	97 mm (3.8 inches)	86%	moderate
October Weather	7°C (44°F)	118 mm (4.6 inches)	92%	low
November Weather	2°C (36°F)	101 mm (4.0 inches)	93%	low
December Weather	-2°C (29°F)	97 mm (3.8 inches)	93%	low