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May Weather in Alftanes, Iceland

Last updated: August 23, 2025

In Alftanes, Iceland, the average temperature in May is a brisk 7°C (44°F). Be prepared for a range of weather, as temperatures can dip as low as -3°C (27°F) and rise to a pleasant 15°C (59°F). During this month, expect about 124 mm (4.9 in) of precipitation spread over 18 days, contributing to an average humidity of 83%.

May Temperature in Alftanes

In May in Alftanes, the average temperature is 7°C (44°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -3°C (27°F). Travelers should be prepared for a mix of chilly and mild weather during this time.

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

The chart illustrates May temperature patterns in Alftanes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alftanes, May typically has an average temperature of 7°C (44°F), with highs reaching up to 15°C (59°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec333335404449525247423634
Data source: Temperature data for Alftanes 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 Alftanes

In Alftanes in May, the precipitation amount is 124 mm (4.9 in) over a span of 18 days.

May Precipitation Trends in Alftanes

The chart displays monthly precipitation patterns in Alftanes, 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 Alftanes, May typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec118135105138124978190163111112114
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Alftanes

In Alftanes in May, humidity is 83%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making exploring outdoors somewhat uncomfortable and requiring extra layers to stay warm and dry.

May Average Humidity in Alftanes

This chart illustrates the average monthly humidity levels in Alftanes, 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 Alftanes is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%85%81%83%82%86%87%87%88%85%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Alftanes

In Alftanes 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 Alftanes.

Maximum UV Index Levels in Alftanes for May

The chart shows the monthly maximum UV Index (UVI) for Alftanes 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 Alftanes typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112356643211
Data source: Alftanes 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 Alftanes Compares to Other Months

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

This table compares monthly weather conditions in Alftanes, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)118 mm (4.6 inches)84%low
February Weather1°C (34°F)135 mm (5.3 inches)82%low
March Weather2°C (35°F)105 mm (4.1 inches)85%low
April Weather4°C (40°F)138 mm (5.4 inches)81%moderate
May Weather7°C (44°F)124 mm (4.9 inches)83%moderate
June Weather9°C (49°F)97 mm (3.8 inches)82%high
July Weather11°C (53°F)81 mm (3.2 inches)86%high
August Weather11°C (52°F)90 mm (3.6 inches)87%moderate
September Weather8°C (47°F)163 mm (6.4 inches)87%moderate
October Weather5°C (42°F)111 mm (4.4 inches)88%low
November Weather2°C (36°F)112 mm (4.4 inches)85%low
December Weather1°C (34°F)114 mm (4.5 inches)84%low

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