December weather forecast and climate
Longyearbyen, Svalbard and Jan Mayen

The frozen Arctic Blue Sea overlooking the snow covered mountains in the background, on a sunny winter morning, in Longyearbyen, Svalbard and Jan Mayen
The frozen Arctic Blue Sea overlooking the snow covered mountains in the background, on a sunny winter morning, in Longyearbyen, Svalbard and Jan Mayen

What is the temperature in December in Longyearbyen?

In Longyearbyen, in December, the average high-temperature is -11°C (12.2°F), and the average low-temperature is -18°C (-0.4°F).

How much does it rain in Longyearbyen in December?

In December, the rain falls for 3 days. Throughout December, 25mm (1") of precipitation is accumulated.

How many days does it snow in December in Longyearbyen?

In December, in Longyearbyen, Svalbard and Jan Mayen, snow falls for 22 days.

What is the snowiest month in Longyearbyen?

Months with the most snowfall days in Longyearbyen, Svalbard and Jan Mayen, are November and December, with an average of 22 snowfall days.
Average temperature in December - Longyearbyen, Svalbard and Jan Mayen
  • Average high temperature in December: -11°C

The warmest month (with the highest average high temperature) is July (7°C).
Months with the lowest average high temperature are January, February and March (-13°C).

  • Average low temperature in December: -18°C

The month with the highest average low temperature is July (3°C).
The coldest month (with the lowest average low temperature) is February (-21°C).

Average rainfall in December - Longyearbyen, Svalbard and Jan Mayen
  • Average rainfall in December: 25mm

The wettest month (with the highest rainfall) is August (30mm).
The driest month (with the lowest rainfall) is May (13mm).

Average rainfall days in December - Longyearbyen, Svalbard and Jan Mayen
  • Average rainfall days in December: 3 days

The month with the highest number of rainy days is August (18 days).
Months with the lowest number of rainy days are January, February and March (2 days).

Average snowfall days in December - Longyearbyen, Svalbard and Jan Mayen
  • Average snowfall days in December: 22 days

Months with the highest number of snowfall days are November and December (22 days).
The month with the lowest number of snowfall days is July (1 days).

Average sea temperature in December - Longyearbyen, Svalbard and Jan Mayen
  • Average sea temperature in December: 2°C

The best month for swimming (with the highest average sea temperature) is August (6°C).
Coldest months (with the lowest average sea temperature) are February and April (1°C).

Average daylight in December / Average sunshine in December - Longyearbyen, Svalbard and Jan Mayen
  • Average daylight in December: 0h

Months with the longest days are May, June and July (Average daylight: 24h).
Months with shortest days are January, November and December (Average daylight: 0h).

  • Average sunshine in December: 0h

The month with most sunshine is May (Average sunshine: 8.2h).
Months with least sunshine are January, February, November and December (Average sunshine: 0).

Average UV index in December - Longyearbyen, Svalbard and Jan Mayen
  • Average UV index in December: 0

Months with the highest UV index are May, June and July (UV index 2).
Months with the lowest UV index are January, February, March, October, November and December (UV index 0).

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