Jan Mayen weather in December 2025

Q: How cold is it in Jan Mayen in December?

Daytime temperatures usually reach -4°C in Jan Mayen in December, falling to -9°C at night.

Q: How sunny is it in Jan Mayen in December?

There are normally 0 hours of bright sunshine each day in Jan Mayen in December - that's 0% of daylight hours.

Q: Is the sea cold around Jan Mayen in December?

The average sea temperature around Jan Mayen in December is 1°C.

Q: Does it rain in Jan Mayen in December?

There are usually 20 days with some rain in Jan Mayen in December and the average monthly rainfall is 80mm. Rain may fall as snow in this month.

Expect -4°C daytime maximum temperatures in the shade with on average 0 hour of sunshine per day in Jan Mayen in December based on long-term weather averages. There is usually 20 days with some rainfall and 80 mm of average monthly rainfall in December.

-4
-4°C max day temperature
0
0 hours of sunshine per day
20
20 days with some rainfall
-9
-9°C min night temperature
0
0 hours of daylight per day
0
No heat & humidity
80
80 mm of monthly rainfall
0
No UV (Maximum) Index UV index
1
1°C sea temperature

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The December weather guide for Jan Mayen shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

How cold is it in Jan Mayen in December?

Daytime temperatures usually reach -4°C in Jan Mayen in December, falling to -9°C at night.

How sunny is it in Jan Mayen in December?

There are normally 0 hours of bright sunshine each day in Jan Mayen in December - that's 0% of daylight hours.

Is the sea cold around Jan Mayen in December?

The average sea temperature around Jan Mayen in December is 1°C.

Does it rain in Jan Mayen in December?

There are usually 20 days with some rain in Jan Mayen in December and the average monthly rainfall is 80mm. Rain may fall as snow in this month.