December weather forecast
Trondheim, Norway

Weather in December

The first month of the winter, December, is still a cold month in Trondheim, Norway, with an average temperature varying between -4°C (24.8°F) and 1°C (33.8°F).

Temperature

In December, the average high-temperature is practically the same as in November - a still wintry 1°C (33.8°F). The average low-temperature, in December, is -4°C (24.8°F).

Rainfall

In Trondheim, during December, the rain falls for 24 days and regularly aggregates up to 123mm (4.84") of precipitation. In Trondheim, during the entire year, the rain falls for 239 days and collects up to 1096mm (43.15") of precipitation.

Sea temperature

In Trondheim, the average seawater temperature in December is 7.3°C (45.1°F).
Note: Swimming in 7.3°C (45.1°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

With an average of 4h and 44min of daylight, December has the shortest days of the year in Trondheim, Norway.
On the first day of December, sunrise is at 09:27 and sunset at 14:47. On the last day of the month, sunrise is at 10:00 and sunset at 14:42 CET.

Sunshine

January and December, with an average of 0h of sunshine, are months with the least sunshine in Trondheim.

UV index

The months with the lowest UV index in Trondheim are January, February, November and December, with an average maximum UV index of 0. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 0 in December transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in December in Trondheim?

In December, the average high-temperature is 1°C (33.8°F), and the average low-temperature is -4°C (24.8°F).

How many days does it rain in December in Trondheim?

In Trondheim, in December, during 24 rainfall days, 123mm (4.84") of precipitation is typically accumulated.

What is the water temperature in December in Trondheim?

In December, the average sea temperature is 7.3°C (45.1°F). Swimming in 7.3°C (45.1°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 Trondheim?

The month with the shortest days in Trondheim is December, with an average of 4h and 44min of daylight.

How many hours of daylight does Trondheim have in December?

In December, the average day length in Trondheim is 4h and 44min.

When are sunrise and sunset in December in Trondheim?

In December, on the first day of the month, sunrise is at 09:27 and sunset at 14:47. On the last day of the month, in Trondheim, sunrise is at 10:00 and sunset at 14:42 CET.

What are the months with the least sunshine in Trondheim?

The months with the least sunshine are January and December, with an average of 0h of sunshine.

How long on average sun shines in December in Trondheim?

In December, the average sunshine duration in Trondheim, Norway, is 0h.

What are the months with the lowest UV index in Trondheim?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 0.

How high is the UV index in December in Trondheim?

The average daily maximum UV index in December is 0. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Trondheim, Norway

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

The warmest month (with the highest average high temperature) is August (17°C).
The months with the lowest average high temperature are January and February (0°C).

  • Average low temperature in December: -4°C

The months with the highest average low temperature are July and August (9°C).
The coldest months (with the lowest average low temperature) are January and February (-5°C).

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Average rainfall in December
Trondheim, Norway

Average rainfall in December - Trondheim, Norway
  • Average rainfall in December: 123mm

The wettest month (with the highest rainfall) is September (133mm).
The driest month (with the least rainfall) is May (53mm).

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Average rainfall days in December
Trondheim, Norway

Average rainfall days in December - Trondheim, Norway
  • Average rainfall days in December: 24 days

The months with the highest number of rainy days are September and December (24 days).
The month with the least rainy days is May (15 days).

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Average sea temperature in December
Trondheim, Norway

Average sea temperature in December - Trondheim, Norway
  • Average sea temperature in December: 7.3°C

The best month for swimming (with the highest average sea temperature) is August (14.8°C).
The coldest month (with the lowest average sea temperature) is March (4.9°C).

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

Average daylight in December / Average sunshine in December - Trondheim, Norway
  • Average daylight in December: 4h and 44min

The month with the longest days is June (Average daylight: 20h and 22min).
The month with the shortest days is December (Average daylight: 4h and 44min).

  • Average sunshine in December: 0h

The months with the most sunshine are May and June (Average sunshine: 7h).
The months with the least sunshine are January and December (Average sunshine: 0h).

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Average UV index in December
Trondheim, Norway

Average UV index in December - Trondheim, Norway
  • Average UV index in December: 0

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 0).

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