May weather forecastHellnar, Iceland
May
Weather in May
May, the last month of the spring in Hellnar, is a frosty month, with an average temperature fluctuating between 6.8°C (44.2°F) and 4.3°C (39.7°F).Temperature
The onset of May notes an average high-temperature of a frosty 6.8°C (44.2°F), subtly shifted from April's 4.5°C (40.1°F). Hellnar documents a consistent average low-temperature of 4.3°C (39.7°F) at night during May.Humidity
In Hellnar, the average relative humidity in May is 78%.Rainfall
In Hellnar, during May, the rain falls for 15.7 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, there are 184.8 rainfall days, and 827mm (32.56") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Hellnar. May is the last month it regularly snows. During 1.6 snowfall days, in May, Hellnar aggregates 5mm (0.2") of snow. In Hellnar, Iceland, during the entire year, snow falls for 46.9 days and aggregates up to 421mm (16.57") of snow.Daylight
The average length of the day in May in Hellnar is 18h and 45min.On the first day of the month, sunrise is at 04:59 and sunset at 22:04. On the last day of May, in Hellnar, sunrise is at 03:18 and sunset at 23:46 GMT.
Sunshine
In Hellnar, the average sunshine in May is 7.3h.UV index
The average daily maximum UV index in May in Hellnar, Iceland, is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in May converts into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hellnar, Iceland
- Average high temperature in May: 6.8°C
The warmest month (with the highest average high temperature) is August (11.3°C).
The month with the lowest average high temperature is March (3.3°C).
- Average low temperature in May: 4.3°C
The months with the highest average low temperature are July and August (9.3°C).
The coldest month (with the lowest average low temperature) is March (0.8°C).
Average pressure in May
Hellnar, Iceland
- Average pressure in May: 1012.2mbar
The month with the highest atmospheric pressure is June (1014.1mbar).
The month with the lowest atmospheric pressure is January (996.1mbar).
Average wind speed in May
Hellnar, Iceland
- Average wind speed in May: 24.7km/h
The windiest month (with the highest average wind speed) is February (36.4km/h).
The calmest month (with the lowest average wind speed) is June (19.4km/h).
Average humidity in May
Hellnar, Iceland
- Average humidity in May: 78%
The months with the highest relative humidity are June and July (82%).
The months with the lowest relative humidity are March and December (75%).
Average rainfall in May
Hellnar, Iceland
- Average rainfall in May: 56mm
The wettest month (with the highest rainfall) is January (96mm).
The driest month (with the least rainfall) is June (37mm).
Average rainfall days in May
Hellnar, Iceland
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is September (19.9 days).
The month with the least rainy days is February (12.2 days).
Average snowfall in May
Hellnar, Iceland
- Average snowfall in May: 5mm
The month with the highest snowfall is March (99mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in May
Hellnar, Iceland
- Average snowfall days in May: 1.6 days
The month with the highest number of snowfall days is March (9.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Hellnar, Iceland
- Average daylight in May: 18h and 42min
The month with the longest days is June (Average daylight: 21h and 24min).
The month with the shortest days is December (Average daylight: 4h and 0min).
- Average sunshine in May: 7h and 18min
The month with the most sunshine is August (Average sunshine: 7h and 48min).
The month with the least sunshine is June (Average sunshine: 0h and 54min).
Average sunshine days in May
Hellnar, Iceland
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is July (14.2 days).
The month with the least sunshine days is January (4.7 days).
Average UV index in May
Hellnar, Iceland
- Average UV index in May: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Hellnar, Iceland
- Average cloud cover in May: 60
The month with the most cloud cover is March (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 56).
Average visibility in May
Hellnar, Iceland
- Average visibility in May: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March and December (8km).
