Weather in December
Concluding the year,
December in
Seltjarnarnes unveils winter in all its might, making the shift from
November's weather more pronounced. A decrease in sea temperature to an average of 6.4°C (43.5°F) paints a clear picture of the weather's severity. Daylight hours witness a substantial drop from November, adding to the overall sense of winter chill. Despite the cold, December's weather creates a quintessential Icelandic winter scene with a calm, icy sea under the Northern Lights.
Sea temperature
In Seltjarnarnes,
Iceland, the average seawater temperature in December is 6.4°C (43.5°F).
Note: Dipping into 6.4°C (43.5°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.
Daylight
With an average of 4h and 24min of daylight, December has the shortest days of the year.
On the first day of December in Seltjarnarnes, sunrise is at 10:47 and sunset at 15:46. On the last day of the month, sunrise is at 11:20 and sunset at 15:42 GMT.