December weather forecastVallanes, Iceland
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Vallanes, Iceland, with an average temperature fluctuating between -6.2°C (20.8°F) and -1.2°C (29.8°F).Temperature
Vallanes experiences its lowest average temperatures in December, reaching a peak of -1.2°C (29.8°F) and a minimum of -6.2°C (20.8°F).Humidity
January, February, November and December, with an average relative humidity of 89%, are the most humid months.Rainfall
The month with the most rainfall is December, when the rain falls for 14.5 days and typically aggregates up to 145mm (5.71") of precipitation.Snowfall
January through July, September through December are months with snowfall. In Vallanes, in December, snow falls for 17.5 days, with typically accumulated 375mm (14.76") of snow. Throughout the year, there are 115.7 snowfall days, and 2085mm (82.09") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 3h and 48min of daylight.On the first day of December, sunrise is at 10:32 and sunset at 15:02. On the last day of the month, sunrise is at 11:08 and sunset at 14:54 GMT.
Sunshine
December has the least sunshine of the year, with an average of 1.4h of sunshine.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Vallanes, Iceland
- Average high temperature in December: -1.2°C
The warmest month (with the highest average high temperature) is July (11.8°C).
The month with the lowest average high temperature is December (-1.2°C).
- Average low temperature in December: -6.2°C
The month with the highest average low temperature is July (6.8°C).
The coldest month (with the lowest average low temperature) is December (-6.2°C).
Average pressure in December
Vallanes, Iceland
- Average pressure in December: 999.3mbar
The month with the highest atmospheric pressure is June (1014.4mbar).
The month with the lowest atmospheric pressure is January (998.7mbar).
Average wind speed in December
Vallanes, Iceland
- Average wind speed in December: 18.7km/h
The windiest month (with the highest average wind speed) is December (18.7km/h).
The calmest month (with the lowest average wind speed) is July (11.9km/h).
Average humidity in December
Vallanes, Iceland
- Average humidity in December: 89%
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is June (77%).
Average rainfall in December
Vallanes, Iceland
- Average rainfall in December: 145mm
The wettest month (with the highest rainfall) is December (145mm).
The driest month (with the least rainfall) is June (38mm).
Average rainfall days in December
Vallanes, Iceland
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is March (12.8 days).
Average snowfall in December
Vallanes, Iceland
- Average snowfall in December: 375mm
The month with the highest snowfall is March (430mm).
The month with the least snowfall is August (0mm).
Average snowfall days in December
Vallanes, Iceland
- Average snowfall days in December: 17.5 days
The month with the highest number of snowfall days is March (19.5 days).
The month with the least snowfall days is August (0 days).
Average daylight in December /
Average sunshine in December
Vallanes, Iceland
- Average daylight in December: 3h and 48min
The month with the longest days is June (Average daylight: 21h and 54min).
The month with the shortest days is December (Average daylight: 3h and 48min).
- Average sunshine in December: 1h and 24min
The month with the most sunshine is May (Average sunshine: 7h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days in December
Vallanes, Iceland
- Average sunshine days in December: 3.7 days
The month with the most sunshine days is August (10.3 days).
The month with the least sunshine days is February (3.5 days).
Average UV index in December
Vallanes, Iceland
- Average UV index in December: 1
The month with the highest UV index is June (UV index 3).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in December
Vallanes, Iceland
- Average cloud cover in December: 68
The months with the most cloud cover are February and November (Cloud cover 70).
The month with the least cloud cover is June (Cloud cover 61).
Average visibility in December
Vallanes, Iceland
- Average visibility in December: 7km
The months with the highest visibility are June, July and September (9km).
The months with the lowest visibility are February, March and December (7km).
