Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
December is the coldest month, with an average high-temperature of 1.3°C (34.3°F) and an average low-temperature of -2.4°C (27.7°F).Humidity
In December, the average relative humidity is 81%.Rainfall
In December, in Alftanes, the rain falls for 9.7 days. Throughout December, 35mm (1.38") of precipitation is accumulated. Throughout the year, there are 166.2 rainfall days, and 416mm (16.38") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Alftanes. In Alftanes, in December, snow falls for 6.3 days, with typically accumulated 61mm (2.4") of snow. Throughout the year, there are 41.1 snowfall days, and 309mm (12.17") of snow is accumulated.Sea temperature
In December, the average sea temperature in Alftanes, Iceland, is 6.4°C (43.5°F).Note: Navigating the 6.4°C (43.5°F) at 13°C (55.4°F) is no joy, and temperatures less than 10°C (50°F) can threaten breathing and cause a chilling shock, gauging personal stamina.
Daylight
December has the shortest days of the year, with an average of 4h and 24min of daylight.On the first day of December, sunrise is at 10:46 and sunset at 15:47. On the last day of the month, sunrise is at 11:19 and sunset at 15:43 GMT.
Sunshine
In Alftanes, the average sunshine in December is 2.9h.UV index
In December, the average daily maximum UV index in Alftanes is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Alftanes?
How cold is December in Alftanes?
What is the average humidity in December in Alftanes?
How much does it rain in Alftanes in December?
How much does it snow in Alftanes in December?
How cold is the water in December in Alftanes?
What is the month with the shortest days in Alftanes?
How many hours of daylight does Alftanes have in December?
When are sunrise and sunset in December in Alftanes?
How long on average sun shines in December in Alftanes?
What is the UV index reading in December in Alftanes?
Average temperature in December
Alftanes, Iceland
- Average high temperature in December: 1.3°C
The warmest month (with the highest average high temperature) is July (13.5°C).
The month with the lowest average high temperature is December (1.3°C).
- Average low temperature in December: -2.4°C
The month with the highest average low temperature is July (9.1°C).
The coldest month (with the lowest average low temperature) is December (-2.4°C).
Average pressure in December
Alftanes, Iceland
- Average pressure in December: 998.4mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.6mbar).
Average wind speed in December
Alftanes, Iceland
- Average wind speed in December: 23.6km/h
The windiest month (with the highest average wind speed) is February (24.9km/h).
The calmest months (with the lowest average wind speed) are June and July (14.9km/h).
Average humidity in December
Alftanes, Iceland
- Average humidity in December: 81%
The months with the highest relative humidity are January, February and September (82%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Alftanes, Iceland
- Average rainfall in December: 35mm
The wettest month (with the highest rainfall) is January (47mm).
The driest months (with the least rainfall) are June and July (25mm).
Average rainfall days in December
Alftanes, Iceland
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is September (17.8 days).
The month with the least rainy days is December (9.7 days).
Average snowfall in December
Alftanes, Iceland
- Average snowfall in December: 61mm
The month with the highest snowfall is March (100mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Alftanes, Iceland
- Average snowfall days in December: 6.3 days
The month with the highest number of snowfall days is March (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Alftanes, Iceland
- Average sea temperature in December: 6.4°C
The best months for swimming (with the highest average sea temperature) are July and August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.3°C).
Average daylight in December /
Average sunshine in December
Alftanes, Iceland
- Average daylight in December: 4h and 2min
The month with the longest days is June (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 4h and 24min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is August (Average sunshine: 7h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Alftanes, Iceland
- Average sunshine days in December: 14.1 days
The month with the most sunshine days is December (14.1 days).
The month with the least sunshine days is September (8.8 days).
Average UV index in December
Alftanes, Iceland
- Average UV index in December: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in December
Alftanes, Iceland
- Average cloud cover in December: 60
The months with the most cloud cover are March and April (Cloud cover 68).
The months with the least cloud cover are August and December (Cloud cover 60).
Average visibility in December
Alftanes, Iceland
- Average visibility in December: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
