December weather forecastSeltjarnarnes, Iceland
December
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.
Updated: Feb 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Seltjarnarnes, Iceland, the average seawater temperature in December is 6.4°C (43.5°F). Swimming in 6.4°C (43.5°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
The month with the shortest days in Seltjarnarnes is December, with an average of 4h and 24min of daylight.
The average day length in December in Seltjarnarnes is 4h and 23min.
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.
Average sea temperature in December
Seltjarnarnes, Iceland
- Average sea temperature in December: 6.4°C
The best months for swimming (with the highest average sea temperature) are July and August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.3°C).
Average daylight in December
Seltjarnarnes, Iceland
- Average daylight in December: 4h and 24min
The month with the longest days is June (Average daylight: 20h and 54min).
The month with the shortest days is December (Average daylight: 4h and 24min).
