Weather in January
The start of the year in
Naantali,
Finland is marked by chilly weather conditions. Sea temperature sits at a somewhat frigid 0.7°C (33.3°F), contributing to the area's characteristically cool environment. Visitors during this time will note that this period exhibits fewer daylight hours compared to the coming months. The cold weather carries on from
December but shows a potential hint of relief as the year progresses. It's the time when the city wears its winter blanket with the surroundings covered in a thick layer of snow.
Sea temperature
In Naantali, Finland, the average seawater temperature in
January is 0.7°C (33.3°F).
Note: While swimming, this is deemed life-threatening and exceptionally hazardous. The icy water induces intense pain and causes swift hyperventilation. Employing a specialized swimsuit is required to offset thermal harm.
Daylight
In Naantali, the average length of the day in January is 6h and 45min.
On the first day of the month, sunrise is at 09:38 and sunset at 15:31. On the last day of January, sunrise is at 08:51 and sunset at 16:38 EET.