December weather forecast
Úlfsá, Iceland

Weather in December

December, the first month of the winter, in Úlfsá, is still a freezing cold month, with average temperature fluctuating between -0.9°C (30.4°F) and -4.3°C (24.3°F).

Temperature

In Úlfsá, the average high-temperature in December is practically the same as in November - a subzero cold -0.9°C (30.4°F). In December, in Úlfsá, the average low-temperature is -4.3°C (24.3°F).

Humidity

Months with the highest humidity in Úlfsá are January, February, October and December, with an average relative humidity of 88%.

Rainfall

In December, in Úlfsá, the rain falls for 6.5 days. Throughout December, 81mm (3.19") of precipitation is accumulated. Throughout the year, in Úlfsá, there are 124.6 rainfall days, and 664mm (26.14") of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, August through December. In Úlfsá, Iceland, during December, snow falls for 12 days and regularly aggregates up to 170mm (6.69") of snow. In Úlfsá, Iceland, during the entire year, snow falls for 96.2 days, and aggregates up to 1214mm (47.8") of snow.

Sea temperature

In December, the average sea temperature is 4°C (39.2°F).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

December has the shortest days of the year in Úlfsá, with an average of 3.1h of daylight.

Sunshine

In December, the average sunshine is 0.9h.

UV index

January through April, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 1 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What are the most humid months in Úlfsá?

January, February, October and December, with an average relative humidity of 88%, are most humid months in Úlfsá.

What is the average humidity in December in Úlfsá?

The average relative humidity in December is 88%.

How much does it rain in Úlfsá in December?

In Úlfsá, in December, during 6.5 rainfall days, 81mm (3.19") of precipitation is typically accumulated.

How many days does it snow in December in Úlfsá?

In Úlfsá, Iceland, in December, during 12 snowfall days, 170mm (6.69") of snow is typically accumulated.

What is the sea temperature in December in Úlfsá?

In Úlfsá, Iceland, the average seawater temperature in December is 4°C (39.2°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the month with the shortest days in Úlfsá?

The month with the shortest days in Úlfsá, Iceland, is December, with an average of 3.1h of daylight.

What is the average length of the day in December in Úlfsá?

The average length of the day in December in Úlfsá, Iceland, is 3.1h.

How many hours of sunshine does Úlfsá have in December?

The average sunshine in December in Úlfsá is 0.9h.

When is the lowest UV index in Úlfsá?

Months with the lowest UV index in Úlfsá are January through April, October through December, with an average maximum UV index of 1.

What is the UV index reading in December in Úlfsá?

In December, the average daily maximum UV index in Úlfsá is 1. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.

Average temperature in December
Úlfsá, Iceland

Average temperature in December - Úlfsá, Iceland
  • Average high temperature in December: -0.9°C

The warmest month (with the highest average high temperature) is July (9.5°C).
The month with the lowest average high temperature is March (-1°C).

  • Average low temperature in December: -4.3°C

The month with the highest average low temperature is July (6.3°C).
The coldest month (with the lowest average low temperature) is December (-4.3°C).

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Average pressure in December
Úlfsá, Iceland

Average pressure in December - Úlfsá, Iceland
  • Average pressure in December: 999.7mbar

The month with the highest atmospheric pressure is June (1014.7mbar).
The month with the lowest atmospheric pressure is January (997.3mbar).

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Average wind speed in December
Úlfsá, Iceland

Average wind speed in December - Úlfsá, Iceland
  • Average wind speed in December: 25.2km/h

The windiest months (with the highest average wind speed) are February and December (25.2km/h).
The calmest month (with the lowest average wind speed) is June (13.4km/h).

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Average humidity in December
Úlfsá, Iceland

Average humidity in December - Úlfsá, Iceland
  • Average humidity in December: 88%

Months with the highest relative humidity are January, February, October and December (88%).
The month with the lowest relative humidity is June (81%).

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Average rainfall in December
Úlfsá, Iceland

Average rainfall in December - Úlfsá, Iceland
  • Average rainfall in December: 81mm

The wettest month (with the highest rainfall) is January (88mm).
The driest month (with the least rainfall) is June (20mm).

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Average rainfall days in December
Úlfsá, Iceland

Average rainfall days in December - Úlfsá, Iceland
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is December (6.5 days).

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Average snowfall in December
Úlfsá, Iceland

Average snowfall in December - Úlfsá, Iceland
  • Average snowfall in December: 170mm

The month with the highest snowfall is March (249mm).
The month with the least snowfall is July (0mm).

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Average snowfall days in December
Úlfsá, Iceland

Average snowfall days in December - Úlfsá, Iceland
  • Average snowfall days in December: 12 days

The month with the highest number of snowfall days is March (17.5 days).
The month with the least snowfall days is July (0 days).

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Average sea temperature in December
Úlfsá, Iceland

Average sea temperature in December - Úlfsá, Iceland
  • Average sea temperature in December: 4°C

The best months for swimming (with the highest average sea temperature) are July and August (7°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (3°C).

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Average daylight in December /
Average sunshine in December
Úlfsá, Iceland

Average daylight in December / Average sunshine in December - Úlfsá, Iceland
  • Average daylight in December: 3.1h

The month with the longest days is June (Average daylight: 23.5h).
The month with the shortest days is December (Average daylight: 3.1h).

  • Average sunshine in December: 0.9h

The month with the most sunshine is August (Average sunshine: 5.8h).
The month with the least sunshine is June (Average sunshine: 0.4h).

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Average sunshine days in December
Úlfsá, Iceland

Average sunshine days in December - Úlfsá, Iceland
  • Average sunshine days in December: 8.8 days

The month with the most sunshine days is June (18 days).
The month with the least sunshine days is February (6.7 days).

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Average UV index in December
Úlfsá, Iceland

Average UV index in December - Úlfsá, Iceland
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 3).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).

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Average cloud cover in December
Úlfsá, Iceland

Average cloud cover in December - Úlfsá, Iceland
  • Average cloud cover in December: 77

The month with the most cloud cover is March (Cloud cover 81).
The month with the least cloud cover is June (Cloud cover 65).

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Average visibility in December
Úlfsá, Iceland

Average visibility in December - Úlfsá, Iceland
  • Average visibility in December: 8km

Months with the highest visibility are May, June, July, August, September and October (9km).
Months with the lowest visibility are January, February, March, April, November and December (8km).

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