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 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
In Selfoss, December is the coldest month, with temperatures averaging a high of 1.5°C (34.7°F) and a low of -1.9°C (28.6°F).Humidity
In Selfoss, the average relative humidity in December is 80%.Rainfall
In Selfoss, during December, the rain falls for 14.3 days and regularly aggregates up to 115mm (4.53") of precipitation. Throughout the year, there are 208.7 rainfall days, and 1105mm (43.5") of precipitation is accumulated.Snowfall
Months with snowfall in Selfoss are January through May, October through December. In Selfoss, in December, snow falls for 12.3 days, with typically accumulated 164mm (6.46") of snow. In Selfoss, Iceland, during the entire year, snow falls for 61.9 days and aggregates up to 825mm (32.48") of snow.Daylight
December has the shortest days of the year, with an average of 4h and 30min of daylight.On the first day of the month, sunrise is at 10:40 and sunset at 15:45. On the last day of December, sunrise is at 11:12 and sunset at 15:41 GMT.
Sunshine
The average sunshine in December is 2.8h.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Consider carefully! The reflective quality of 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
What is the coldest time of year?
How cold is December?
What is the average humidity in December in Selfoss?
How much does it rain in Selfoss in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Selfoss have in December?
How high is the UV index in December?
Average temperature in December
Selfoss, Iceland
- Average high temperature in December: 1.5°C
The warmest month (with the highest average high temperature) is July (13.8°C).
The month with the lowest average high temperature is December (1.5°C).
- Average low temperature in December: -1.9°C
The month with the highest average low temperature is July (8.9°C).
The coldest month (with the lowest average low temperature) is December (-1.9°C).
Average pressure in December
Selfoss, Iceland
- Average pressure in December: 998.3mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.8mbar).
Average wind speed in December
Selfoss, Iceland
- Average wind speed in December: 23.6km/h
The windiest month (with the highest average wind speed) is February (24.8km/h).
The calmest month (with the lowest average wind speed) is July (14.7km/h).
Average humidity in December
Selfoss, Iceland
- Average humidity in December: 80%
The months with the highest relative humidity are January and September (82%).
The month with the lowest relative humidity is May (74%).
Average rainfall in December
Selfoss, Iceland
- Average rainfall in December: 115mm
The wettest month (with the highest rainfall) is January (142mm).
The driest month (with the least rainfall) is June (45mm).
Average rainfall days in December
Selfoss, Iceland
- Average rainfall days in December: 14.3 days
The month with the highest number of rainy days is April (19.9 days).
The month with the least rainy days is December (14.3 days).
Average snowfall in December
Selfoss, Iceland
- Average snowfall in December: 164mm
The month with the highest snowfall is March (220mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Selfoss, Iceland
- Average snowfall days in December: 12.3 days
The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Selfoss, Iceland
- Average daylight in December: 4h and 3min
The month with the longest days is June (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 4h and 30min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is August (Average sunshine: 7h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Selfoss, Iceland
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is June (12.3 days).
The month with the least sunshine days is January (5.5 days).
Average UV index in December
Selfoss, Iceland
- Average UV index in December: 2
The month with the highest UV index is July (UV index 4).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Selfoss, Iceland
- Average cloud cover in December: 60
The month with the most cloud cover is March (Cloud cover 67).
The months with the least cloud cover are May and August (Cloud cover 59).
Average visibility in December
Selfoss, Iceland
- Average visibility in December: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (8km).
