Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
As Hellissandur, Iceland, transitions into May, the average high-temperature stands at a frosty 6.8°C (44.2°F), offering little variation from the preceding month. A slight dip in temperature to an icy 4.3°C (39.7°F) marks the average nights during May.Humidity
In May, the average relative humidity in Hellissandur, Iceland, is 78%.Rainfall
In Hellissandur, Iceland, during May, the rain falls for 15.7 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, in Hellissandur, there are 184.8 rainfall days, and 827mm (32.56") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 1.6 snowfall days, in May, Hellissandur aggregates 5mm (0.2") of snow. In Hellissandur, 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 is 18h and 49min.On the first day of the month, sunrise is at 04:58 and sunset at 22:06. On the last day of May, sunrise is at 03:15 and sunset at 23:51 GMT.
Sunshine
The average sunshine in May is 7.3h.UV index
In May, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 3 in May interprets into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Hellissandur in May?
What is the average humidity in May in Hellissandur?
How many days does it rain in May in Hellissandur?
What is the last month it snows in Hellissandur?
What is the average length of the day in May in Hellissandur?
What time are sunrise and sunset in May in Hellissandur?
How many hours of sunshine does Hellissandur have in May?
What is the UV index reading in May in Hellissandur?
Average temperature in May
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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
Hellissandur, Iceland
- Average daylight in May: 18h and 5min
The month with the longest days is June (Average daylight: 21h and 36min).
The month with the shortest days is December (Average daylight: 3h and 54min).
- Average sunshine in May: 7h and 2min
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
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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
Hellissandur, 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).
