December
Weather in December
Sea temperature
In December, the average sea temperature in Mrzeżyno, Poland, is 5.4°C (41.7°F).Note: Diving into 5.4°C (41.7°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
December has the shortest days of the year, with an average of 7h and 30min of daylight.On the first day of December in Mrzeżyno, sunrise is at 07:55 and sunset at 15:40. On the last day of the month, sunrise is at 08:18 and sunset at 15:45 CET.
Updated: Jul 23, 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
How cold is the water in December?
In December, the average sea temperature is 5.4°C (41.7°F). Swimming in 5.4°C (41.7°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.
What is the month with the shortest days?
With an average of 7h and 30min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
In December, the average day length is 7h and 28min.
When are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 07:55 and sunset at 15:40. On the last day of the month, sunrise is at 08:18 and sunset at 15:45 CET.
Average sea temperature in December
Mrzeżyno, Poland
- Average sea temperature in December: 5.4°C
The best month for swimming (with the highest average sea temperature) is August (18.8°C).
The coldest months (with the lowest average sea temperature) are January, February and March (2.4°C).
Average daylight in December
Mrzeżyno, Poland
- Average daylight in December: 7h and 3min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
