May Weather in Seltjarnarnes, Iceland

Last updated: August 23, 2025

In May, the average temperature in Seltjarnarnes, Iceland is a cool 7°C (44°F), with values ranging from a chilly -3°C (27°F) to a mild 15°C (60°F). During this month, expect approximately 113 mm (4.4 in) of precipitation spread over 18 days, contributing to a high average humidity of 85%.

May Temperature in Seltjarnarnes

In May in Seltjarnarnes, the average temperature is 7°C (44°F), with maximums reaching 15°C (60°F) and minimums plummeting to as low as -3°C (27°F). Be sure to pack layers and prepare for chilly nights when traveling during this time.

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

The chart illustrates May temperature patterns in Seltjarnarnes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seltjarnarnes, May typically has an average temperature of 7°C (44°F), with highs reaching up to 15°C (60°F) and lows dropping to around -3°C (27°F).

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

May Precipitation in Seltjarnarnes

In Seltjarnarnes in May, the precipitation amount is 113 mm (4.4 in) over a span of 18 days.

May Precipitation Trends in Seltjarnarnes

The chart displays monthly precipitation patterns in Seltjarnarnes, 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 Seltjarnarnes, May typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 18 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 Seltjarnarnes

In Seltjarnarnes 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 Seltjarnarnes

This chart illustrates the average monthly humidity levels in Seltjarnarnes, 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 Seltjarnarnes is approximately 85%, 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 Seltjarnarnes

In Seltjarnarnes 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 Seltjarnarnes.

Maximum UV Index Levels in Seltjarnarnes for May

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

Data source: Seltjarnarnes 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 Seltjarnarnes Compares to Other Months

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

This table compares monthly weather conditions in Seltjarnarnes, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	113 mm (4.5 inches)	96%	low
February Weather	0°C (33°F)	125 mm (4.9 inches)	95%	low
March Weather	1°C (34°F)	103 mm (4.1 inches)	94%	low
April Weather	4°C (40°F)	121 mm (4.8 inches)	87%	moderate
May Weather	7°C (44°F)	113 mm (4.4 inches)	85%	moderate
June Weather	9°C (49°F)	92 mm (3.6 inches)	81%	high
July Weather	11°C (53°F)	75 mm (3.0 inches)	86%	high
August Weather	11°C (52°F)	83 mm (3.3 inches)	88%	moderate
September Weather	8°C (47°F)	164 mm (6.5 inches)	92%	moderate
October Weather	5°C (42°F)	96 mm (3.8 inches)	93%	low
November Weather	2°C (35°F)	105 mm (4.1 inches)	94%	low
December Weather	0°C (33°F)	106 mm (4.2 inches)	95%	low