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May Weather in Grundarhverfi, Iceland

Last updated: August 23, 2025

In May, the average temperature in Grundarhverfi, Iceland is a cool 7°C (44°F). Temperatures can swing from a chilly -4°C (25°F) to a mild 16°C (62°F). Expect 118 mm (4.6 in) of precipitation spread over 18 days, contributing to an average humidity of 85%. Prepare for a wet and brisk atmosphere!

May Temperature in Grundarhverfi

In May in Grundarhverfi, the average temperature is 7°C (44°F). The maximum can reach 16°C (62°F), while the minimum can drop as low as -4°C (25°F). Be prepared for chilly weather and pack layers to stay comfortable during your travels.

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

The chart illustrates May temperature patterns in Grundarhverfi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grundarhverfi, May typically has an average temperature of 7°C (44°F), with highs reaching up to 16°C (62°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec303133394449525246413431
Data source: Temperature data for Grundarhverfi 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 Grundarhverfi

In Grundarhverfi in May, the total precipitation amount reaches 118 mm (4.6 in) over the course of 18 days.

May Precipitation Trends in Grundarhverfi

The chart displays monthly precipitation patterns in Grundarhverfi, 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 Grundarhverfi, May typically receives around 118 mm (4.6 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec11813110612311894768316394105107
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Grundarhverfi

In Grundarhverfi in May, humidity is 85%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.

May Average Humidity in Grundarhverfi

This chart illustrates the average monthly humidity levels in Grundarhverfi, 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 Grundarhverfi is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%94%87%85%81%86%88%92%93%94%95%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Grundarhverfi

In Grundarhverfi 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 Grundarhverfi.

Maximum UV Index Levels in Grundarhverfi for May

The chart shows the monthly maximum UV Index (UVI) for Grundarhverfi 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 Grundarhverfi typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456643211
Data source: Grundarhverfi 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 Grundarhverfi Compares to Other Months

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

This table compares monthly weather conditions in Grundarhverfi, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)118 mm (4.6 inches)96%low
February Weather-1°C (31°F)131 mm (5.1 inches)95%low
March Weather1°C (33°F)106 mm (4.2 inches)94%low
April Weather4°C (39°F)123 mm (4.8 inches)87%moderate
May Weather7°C (44°F)118 mm (4.6 inches)85%moderate
June Weather9°C (49°F)94 mm (3.7 inches)81%high
July Weather11°C (53°F)76 mm (3.0 inches)86%high
August Weather11°C (52°F)83 mm (3.3 inches)88%moderate
September Weather8°C (47°F)162 mm (6.4 inches)92%moderate
October Weather5°C (41°F)94 mm (3.7 inches)93%low
November Weather1°C (34°F)105 mm (4.1 inches)94%low
December Weather0°C (32°F)107 mm (4.2 inches)95%low

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