Longyearbyen
Svalbard and Jan Mayen
Long-term weather forecast
Long-term weather forecast

January 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
January, like December, in Longyearbyen, Svalbard and Jan Mayen, is an extremely cold winter month, with average temperature varying between -13°C (8.6°F) and -20°C (-4°F).

Temperature

January through March, with an average high-temperature of -13°C (8.6°F), are the coldest months.

Rainfall

In Longyearbyen, in January, during 2 rainfall days, 22mm (0.9") of precipitation is typically accumulated. Throughout the year, in Longyearbyen, Svalbard and Jan Mayen, there are 86 rainfall days, and 271mm (10.7") of precipitation is accumulated.

Snowfall

Months with snowfall in Longyearbyen are January through December.

Sea temperature

In Longyearbyen, the average seawater temperature is 2°C (35.6°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.

Daylight

Months with the shortest days in Longyearbyen are January, November and December, with an average of 0h of daylight.

Sunshine

Months with the least sunshine are January, February, November and December, with an average of 0h of sunshine.

UV index

January through March, October through December, with an average maximum UV index of 0, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the UV radiation for the ordinary person.
In January, the average maximum UV index of 0 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What are the coldest months in Longyearbyen?

The coldest months are January through March, with an average high-temperature of -13°C (8.6°F).

What is the temperature in January in Longyearbyen?

In January, in Longyearbyen, the average high-temperature is -13°C (8.6°F), and the average low-temperature is -20°C (-4°F).

How much does it rain in Longyearbyen in January?

In Longyearbyen, Svalbard and Jan Mayen, in January, during 2 rainfall days, 22mm (0.9") of precipitation is typically accumulated.

How many days does it snow in January in Longyearbyen?

In Longyearbyen, during January, snow falls for 21 days.

What is the water temperature in January in Longyearbyen?

In Longyearbyen, the average seawater temperature in January is 2°C (35.6°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the month with the shortest days in Longyearbyen?

January, November and December, with an average of 0h of daylight, are months with the shortest days in Longyearbyen, Svalbard and Jan Mayen.

What is the average length of the day in January in Longyearbyen?

In Longyearbyen, the average length of the day in January is 0h.

What is the month with the least sunshine in Longyearbyen?

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

How long on average sun shines in January in Longyearbyen?

The average sunshine in January in Longyearbyen is 0h.

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

Months with the lowest UV index in Longyearbyen, Svalbard and Jan Mayen, are January through March, October through December, with an average maximum UV index of 0.

What is the UV index reading in January in Longyearbyen?

In Longyearbyen, the average daily maximum UV index in January is 0. 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 January - Longyearbyen, Svalbard and Jan Mayen
  • Average high temperature in January: -13°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 January: -20°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 January - Longyearbyen, Svalbard and Jan Mayen
  • Average rainfall in January: 22mm

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

Average rainfall days in January - Longyearbyen, Svalbard and Jan Mayen
  • Average rainfall days in January: 2 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 January - Longyearbyen, Svalbard and Jan Mayen
  • Average snowfall days in January: 21 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 January - Longyearbyen, Svalbard and Jan Mayen
  • Average sea temperature in January: 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 January / Average sunshine in January - Longyearbyen, Svalbard and Jan Mayen
  • Average daylight in January: 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 January: 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 January - Longyearbyen, Svalbard and Jan Mayen
  • Average UV index in January: 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).