December weather forecast
Moss, Norway

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Weather in December

December signifies the advent of winter, with dropping temperatures, mounting snowfall, and increasing pressure. A high of 1°C (33.8°F) and a low of -2.4°C (27.7°F) set the stage for a white Christmas. The city transforms into a snowy landscape while homes radiate warmth and a festive spirit. The weather becomes ideal for sipping hot beverages, embellishing Christmas trees, and knitting warm mittens. As the year concludes, Moss, Norway wraps itself in a thick blanket of December's winter tranquility.

Temperature

The beginning of December in Moss subtly marks a decrease in the average high-temperature, transitioning from 4.5°C (40.1°F) in November to a still cold 1°C (33.8°F). The nighttime temperature in December experiences a minor dip, averaging a subzero cold -2.4°C (27.7°F).

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Moss, in December, it is raining for 8.1 days, with typically 30mm (1.18") of accumulated precipitation. In Moss, Norway, during the entire year, the rain falls for 117.6 days and collects up to 433mm (17.05") of precipitation.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 6 days. Throughout December, 70mm (2.76") of snow is accumulated. In Moss, during the entire year, snow falls for 39.4 days and aggregates up to 397mm (15.63") of snow.

Sea temperature

In December, the average sea temperature is 6.1°C (43°F).
Note: Beware when you're in 6.1°C (43°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.

Daylight

The month with the shortest days is December, with an average of 6h and 12min of daylight.
On the first day of the month, sunrise is at 08:48 and sunset at 15:24. On the last day of December, in Moss, sunrise is at 09:14 and sunset at 15:26 CET.

Sunshine

The month with the least sunshine is December, with an average of 3.4h of sunshine.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. 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: In December, a daily maximum UV index of 2 leads to the following instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

How cold is December in Moss?

During December, Moss experiences an average high-temperature of 1°C (33.8°F) and a low-temperature of -2.4°C (27.7°F).

What is the average humidity in December in Moss?

In December, the average relative humidity in Moss is 83%.

How much does it rain in Moss in December?

In Moss, Norway, in December, during 8.1 rainfall days, 30mm (1.18") of precipitation is typically accumulated.

How many days does it snow in December in Moss?

In December, it is snowing for 6 days. Throughout December, 70mm (2.76") of snow is accumulated.

What is the sea water temperature in December in Moss?

In Moss, the average seawater temperature in December is 6.1°C (43°F). Swimming in 6.1°C (43°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Moss?

December has the shortest days of the year, with an average of 6h and 12min of daylight.

How many hours of daylight does Moss have in December?

The average day length in December in Moss, Norway, is 6h and 13min.

What time are sunrise and sunset in December in Moss?

In December, on the first day of the month, sunrise is at 08:48 and sunset at 15:24. On the last day of the month, in Moss, sunrise is at 09:14 and sunset at 15:26 CET.

What is the month with the least sunshine in Moss?

December has the least sunshine of the year in Moss, with an average of 3.4h of sunshine.

How long on average sun shines in December in Moss?

The average sunshine duration in December in Moss, Norway, is 3.4h.

What is the month with the lowest UV index in Moss?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Moss.

How high is the UV index in December in Moss?

In Moss, Norway, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Moss, Norway

Average temperature in December - Moss, Norway
  • Average high temperature in December: 1°C

The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is January (-0.4°C).

  • Average low temperature in December: -2.4°C

The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (-4.5°C).

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Average pressure in December
Moss, Norway

Average pressure in December - Moss, Norway
  • Average pressure in December: 1008mbar

The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).

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Average wind speed in December
Moss, Norway

Average wind speed in December - Moss, Norway
  • Average wind speed in December: 16.4km/h

The windiest month (with the highest average wind speed) is December (16.4km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).

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Average humidity in December
Moss, Norway

Average humidity in December - Moss, Norway
  • Average humidity in December: 83%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (71%).

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Average rainfall in December
Moss, Norway

Average rainfall in December - Moss, Norway
  • Average rainfall in December: 30mm

The wettest month (with the highest rainfall) is November (52mm).
The driest month (with the least rainfall) is April (19mm).

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Average rainfall days in December
Moss, Norway

Average rainfall days in December - Moss, Norway
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in December
Moss, Norway

Average snowfall in December - Moss, Norway
  • Average snowfall in December: 70mm

The month with the highest snowfall is January (108mm).
The months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days in December
Moss, Norway

Average snowfall days in December - Moss, Norway
  • Average snowfall days in December: 6 days

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Moss, Norway

Average sea temperature in December - Moss, Norway
  • Average sea temperature in December: 6.1°C

The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).

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Average daylight in December /
Average sunshine in December
Moss, Norway

Average daylight in December / Average sunshine in December - Moss, Norway
  • Average daylight in December: 6h and 1min

The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).

  • Average sunshine in December: 3h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

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Average sunshine days in December
Moss, Norway

Average sunshine days in December - Moss, Norway
  • Average sunshine days in December: 18.1 days

The month with the most sunshine days is April (20.2 days).
The month with the least sunshine days is November (14.5 days).

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Average UV index in December
Moss, Norway

Average UV index in December - Moss, Norway
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in December
Moss, Norway

Average cloud cover in December - Moss, Norway
  • Average cloud cover in December: 54

The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are June, July and August (Cloud cover 38).

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Average visibility in December
Moss, Norway

Average visibility in December - Moss, Norway
  • Average visibility in December: 9km

The months with the highest visibility are May and June (10km).
The months with the lowest visibility are January, February and March (8km).

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Moss, Norway

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