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
Weather in December
Temperature
With an average high-temperature of 1.5°C (34.7°F) and an average low-temperature of -1.9°C (28.6°F), December is the coldest month in Selfoss.Humidity
In December, the average relative humidity in Selfoss is 80%.Rainfall
In Selfoss, in December, during 14.3 rainfall days, 115mm (4.53") of precipitation is typically accumulated. In Selfoss, during the entire year, the rain falls for 208.7 days and collects up to 1105mm (43.5") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Selfoss, during December, snow falls for 12.3 days and regularly aggregates up to 164mm (6.46") of snow. Throughout the year, in Selfoss, there are 61.9 snowfall days, and 825mm (32.48") of snow is accumulated.Daylight
With an average of 4h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 10:40 and sunset at 15:45. On the last day of December, in Selfoss, sunrise is at 11:12 and sunset at 15:41 GMT.
Sunshine
In December, the average sunshine in Selfoss is 2.8h.UV index
In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 2 in December transforms into this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What are the coldest months in Selfoss?
How cold is December in Selfoss?
What is the average humidity in December in Selfoss?
How many days does it rain in December in Selfoss?
How much does it snow in Selfoss in December?
What is the month with the shortest days in Selfoss?
How many hours of daylight does Selfoss have in December?
When are sunrise and sunset in December in Selfoss?
How many hours of sunshine does Selfoss have in December?
What is the UV index reading in December in Selfoss?
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).
Selfoss, Iceland
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