December weather forecastNynäshamn, Sweden
December
Weather in December
Sea temperature
In December, the average sea temperature in Nynäshamn, Sweden, is 4.8°C (40.6°F).Note: In the water-based sport of swimming, this state is life-threatening and exceedingly dangerous. The freezing water causes severe discomfort, leading to rapid hyperventilation. A specialized swimsuit is compulsory to avert thermal damage.
Daylight
The month with the shortest days is December, with an average of 6h and 24min of daylight.On the first day of the month, sunrise is at 08:15 and sunset at 14:59. On the last day of December, sunrise is at 08:40 and sunset at 15:01 CET.
Updated: Feb 2, 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
In December, the average sea temperature in Nynäshamn, Sweden, is 4.8°C (40.6°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.
With an average of 6h and 24min of daylight, December has the shortest days of the year in Nynäshamn, Sweden.
In December, the average day length is 6h and 22min.
In December, on the first day of the month, sunrise is at 08:15 and sunset at 14:59. On the last day of the month, in Nynäshamn, sunrise is at 08:40 and sunset at 15:01 CET.
Average sea temperature in December
Nynäshamn, Sweden
- Average sea temperature in December: 4.8°C
The best month for swimming (with the highest average sea temperature) is August (18.7°C).
The coldest month (with the lowest average sea temperature) is February (1°C).
Average daylight in December
Nynäshamn, Sweden
- Average daylight in December: 6h and 24min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).
