May Weather in Rognan, Norway

Last updated: August 27, 2025

In May, the average temperature in Rognan, Norway hovers around 3°C (39°F). Expect chilly days, with minimums dipping to -9°C (17°F), while the mercury can rise to a pleasant 21°C (71°F). Prepare for some wet weather, as 82 mm (3.2 in) of precipitation is spread over 16 days. Keep in mind, the air tends to be quite humid, with an average humidity of 84%.

May Temperature in Rognan

In May in Rognan, the average temperature is 3°C (39°F). The maximum can reach 21°C (71°F) and the minimum can be as low as -9°C (17°F). Travelers should be prepared for a wide range of temperatures, so layering clothing is recommended for comfort.

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

The chart illustrates May temperature patterns in Rognan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rognan, May typically has an average temperature of 3°C (39°F), with highs reaching up to 21°C (71°F) and lows dropping to around -9°C (17°F).

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

May Precipitation in Rognan

In Rognan in May, the total precipitation amount is 82 mm (3.2 in) distributed over 16 days.

May Precipitation Trends in Rognan

The chart displays monthly precipitation patterns in Rognan, 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 Rognan, May typically receives around 82 mm (3.2 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 Rognan

In Rognan in May humidity is 84%. With an average temperature of 3°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and the air heavy, where every step feels like wading through a thick fog.

May Average Humidity in Rognan

This chart illustrates the average monthly humidity levels in Rognan, 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 Rognan is approximately 84%, 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 Rognan

In Rognan 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 Rognan.

Maximum UV Index Levels in Rognan for May

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

Data source: Rognan 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 Rognan Compares to Other Months

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

This table compares monthly weather conditions in Rognan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	136 mm (5.4 inches)	98%	low
February Weather	-8°C (18°F)	112 mm (4.4 inches)	96%	low
March Weather	-5°C (23°F)	165 mm (6.5 inches)	93%	low
April Weather	-1°C (30°F)	108 mm (4.3 inches)	91%	moderate
May Weather	3°C (39°F)	82 mm (3.2 inches)	84%	moderate
June Weather	9°C (49°F)	123 mm (4.8 inches)	81%	high
July Weather	13°C (55°F)	132 mm (5.2 inches)	85%	high
August Weather	11°C (52°F)	142 mm (5.6 inches)	89%	moderate
September Weather	7°C (45°F)	136 mm (5.4 inches)	93%	moderate
October Weather	2°C (35°F)	115 mm (4.5 inches)	95%	low
November Weather	-3°C (27°F)	103 mm (4.1 inches)	95%	low
December Weather	-6°C (22°F)	96 mm (3.8 inches)	98%	low