January weather forecast
Keflavík International Airport, Iceland

January sports the coldest sea temperatures of the year in Keflavík International Airport, plunging to an icy average monthly low of 5.3°C (41.5°F). These conditions significantly influence the proximate air temperatures making this time of the year quite frosty. The Keflavik weather remains quite brisk, with daylight scarce, becoming more apparent late in the morning and subsiding early in the evening. Preparatory measures for frost and potentially snowfall when planning any outdoor activities. Although the month is tremendously cold, there are periods of brilliance as the sun reflects on the icy landscapes making for memorable winter scenes.

Sea temperature

In Keflavík International Airport, the average seawater temperature in January is 5.3°C (41.5°F).
Note: With the appropriate swimsuit, one can swim in 5.3°C (41.5°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. A fleeting swim around 13°C (55.4°F) is distressing.

Daylight

In Keflavík International Airport, the average length of the day in January is 5h and 39min.
On the first day of January in Keflavík International Airport, sunrise is at 11:19 and sunset at 15:47. On the last day of the month, sunrise is at 10:13 and sunset at 17:14 GMT.