January weather forecast
Hanko, Finland

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Weather in January

In comparison to the preceding month of December, January in Hanko, Finland experiences intensifying severity in cold weather. Residents prepare for an average sea temperature of about 1.8°C (35.2°F). Despite the submerged thermometer readings, the daylight hours start to increase, signaling the far-off spring. The month's icy chill is more pronounced with its biting sea breeze and snowfall. Remarkably, January stands as one of the coldest months in Hanko.

Sea temperature

In January, the average sea temperature in Hanko, Finland, is 1.8°C (35.2°F).
Note: During swimming, this state is an instant threat to life. Breathing is uncontrollable, and coherent thought processes nearly vanish. A specialized swimsuit is crucial to minimize thermal dissipation.

Daylight

In January, the average length of the day is 6h and 55min.
On the first day of the month, sunrise is at 09:28 and sunset at 15:34. On the last day of January, sunrise is at 08:44 and sunset at 16:38 EET.

Frequently asked questions

How cold is the water in January in Hanko?

In January, the average sea temperature in Hanko is 1.8°C (35.2°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the average length of the day in January in Hanko?

In January, the average day length is 6h and 55min.

What time are sunrise and sunset in January in Hanko?

On the first day of January in Hanko, Finland, sunrise is at 09:28 and sunset at 15:34. On the last day of the month, sunrise is at 08:44 and sunset at 16:38 EET.

Average sea temperature in January
Hanko, Finland

Average sea temperature in January - Hanko, Finland
  • Average sea temperature in January: 1.8°C

The best month for swimming (with the highest average sea temperature) is August (17.8°C).
The coldest month (with the lowest average sea temperature) is March (0.3°C).

Average daylight in January
Hanko, Finland

Average daylight in January - Hanko, Finland
  • Average daylight in January: 6h and 5min

The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).

Hanko, Finland

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