Is Reykjavík hot in December?
Days are typically cold at 3.3°C, while nights average -1.6°C.
Iceland · 1991–2020 normal
Typical December weather in Reykjavík: 3.3°C by day, -1.6°C at night, 114 mm of rain over 17.4 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, December scores 5 out of 100 (July leads the year at 45). Daylight is calculated as 4 h 12 from latitude 64.14°. Open-water sea temperature is 5.8°C (11 km from the place centre).
December at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically cold at 3.3°C, while nights average -1.6°C.
The measured monthly average is 114 mm across about 17 wet days.
There are about 4 h 12 between sunrise and sunset at mid-month, calculated from the place latitude.
December ranks 12 of 12 in our weather comparison; July ranks first.
Event window
At 64.1° the calculated mid-month daylight is 4 h 12. That darkness, not an aurora observation, is why this latitude is sought for northern or southern lights in December. Typical nights are -1.6°C.
Event window
The measured night-time normal is -1.6°C, so frost is typical rather than exceptional this month.
The evidence behind this page
Next step
The weather comparison for Reykjavík is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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