Weather in January
, ushers in the new year with its distinct winter conditions. Chilly conditions prevail with the sea temperature sees its most prominent drop. The sea temperature plunges to a cooler 10.3°C (50.5°F), signaling a sharp contrast from the latter months. Residents and visitors must brace for more prolonged nights as daylight hours dwindle. To adapt, layers of woolens and effective heaters become a necessity at home and during outings.
In Koper, the average seawater temperature in January is 10.3°C (50.5°F).Note
: Immersing oneself in 10.3°C (50.5°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
In Koper, the average length of the day in January is 9h and 10min.
On the first day of the month, sunrise is at 07:45 and sunset at 16:31. On the last day of January, in Koper, sunrise is at 07:27 and sunset at 17:09 CET.