December Weather in Longyearbyen

Last updated: March 2, 2024

The weather in Longyearbyen, Svalbard and Jan Mayen, during December is characterized by an average temperature of -9°C (16°F). Highs can soar to -1°C (31°F), while lows may dip to -22°C (-6°F). Typically, the humidity level in Longyearbyen throughout December hovers around 98%.

-22°C (-6°F)

Minimum temperature

-9°C (16°F)

Average temperature

-1°C (31°F)

Maximum temperature

98%

Humidity

Precipitation and Sunshine hours

In December, Longyearbyen averages 53 mm (2.1 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 0 hours 0 minutes of daylight, with the sun shining for approximately 0 hours 0 minutes each day. Additionally, there is a 19% probability of sunny days during this period.

53 mm (2.1 inches)

Precipitation

12 rainy days

Rainy days

0 hours 0 minutes

Sunshine hours

19%

Chance of sun

UV Index

In December, the UV Index in Longyearbyen reaches a maximum of 0, indicating a level of Low exposure. The most intense UV radiation typically occurs between 00:00 and 02:00, during which unprotected skin may burn in as little as 45 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	0	0	0	0	0	0	0	0	0	0	0	0	0
Exposure	Low
Time to burn	45 min