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May Weather in Rotnes, Norway

Last updated: August 27, 2025

In Rotnes, Norway, the average temperature in May hovers around 10°C (51°F). Expect a range from a chilly -3°C (26°F) to a warm 29°C (85°F). During this month, precipitation totals approximately 90 mm (3.5 in) over about 12 days, accompanied by an average humidity of 73%. Prepare accordingly for a mix of cool and warm days!

May Temperature in Rotnes

In May in Rotnes, the average temperature is 10°C (51°F). Maximum can reach 29°C (85°F) and minimum can be as low as -3°C (26°F). Be prepared for a wide range of temperatures to fully enjoy your travels!

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

The chart illustrates May temperature patterns in Rotnes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rotnes, May typically has an average temperature of 10°C (51°F), with highs reaching up to 29°C (85°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec272733415161636053443628
Data source: Temperature data for Rotnes 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 Rotnes

In Rotnes in May, the precipitation amount is 90 mm (3.5 in) spread over 12 days.

May Precipitation Trends in Rotnes

The chart displays monthly precipitation patterns in Rotnes, 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 Rotnes, May typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec606465389086103100106130107107
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rotnes

In Rotnes in May, humidity is 73%. With an average temperature of 10°C (51°F), this humidity feels like a chilly dampness that can make outdoor activities uncomfortable, causing your clothes to cling to your skin and a persistent coolness that seeps into your bones, which might deter long excursions without proper layering.

May Average Humidity in Rotnes

This chart illustrates the average monthly humidity levels in Rotnes, 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 Rotnes is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%89%82%73%71%72%77%86%92%93%93%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Rotnes

In Rotnes 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 Rotnes.

Maximum UV Index Levels in Rotnes for May

The chart shows the monthly maximum UV Index (UVI) for Rotnes 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 Rotnes typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Rotnes 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 Rotnes Compares to Other Months

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

This table compares monthly weather conditions in Rotnes, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)60 mm (2.4 inches)94%low
February Weather-3°C (27°F)64 mm (2.5 inches)92%low
March Weather0°C (33°F)65 mm (2.5 inches)89%moderate
April Weather5°C (41°F)38 mm (1.5 inches)82%moderate
May Weather10°C (51°F)90 mm (3.5 inches)73%moderate
June Weather16°C (61°F)86 mm (3.4 inches)71%high
July Weather17°C (63°F)103 mm (4.1 inches)72%high
August Weather15°C (60°F)100 mm (3.9 inches)77%moderate
September Weather12°C (53°F)106 mm (4.2 inches)86%moderate
October Weather7°C (44°F)130 mm (5.1 inches)92%low
November Weather2°C (36°F)107 mm (4.2 inches)93%low
December Weather-2°C (28°F)107 mm (4.2 inches)93%low

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