Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
The arrival of December corresponds with a light shift in temperature, down from a wintry 5.6°C (42.1°F) in November to a still cold 1.9°C (35.4°F). A modest nighttime temperature average of -1.2°C (29.8°F) characterizes December in Nyköping.Humidity
The months with the highest humidity in Nyköping are January, February, November and December, with an average relative humidity of 87%.Rainfall
In Nyköping, during December, the rain falls for 9.3 days and regularly aggregates up to 27mm (1.06") of precipitation. In Nyköping, during the entire year, the rain falls for 144.2 days and collects up to 380mm (14.96") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Nyköping, Sweden, in December, snow falls for 8.5 days, with typically accumulated 46mm (1.81") of snow. Throughout the year, there are 43.5 snowfall days, and 249mm (9.8") of snow is accumulated.Sea temperature
In Nyköping, in December, the average water temperature is 4.8°C (40.6°F).Note: While swimming, this is identified as life-endangering and very dangerous. The water's freezing temperatures cause intense discomfort and induce rapid hyperventilation. A specialized swimsuit is mandatory to mitigate thermal damage.
Daylight
With an average of 6h and 24min of daylight, December has the shortest days of the year in Nyköping, Sweden.On the first day of December, sunrise is at 08:17 and sunset at 15:04. On the last day of the month, sunrise is at 08:43 and sunset at 15:06 CET.
Sunshine
With an average of 2.9h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Nyköping in December?
What is the most humid month in Nyköping?
What is the average humidity in December in Nyköping?
How much does it rain in Nyköping in December?
How many days does it snow in December in Nyköping?
What is the water temperature in December in Nyköping?
What is the month with the shortest days in Nyköping?
How many hours of daylight does Nyköping have in December?
When is the sunrise / sunset in December in Nyköping?
What is the month with the least sunshine in Nyköping?
How long on average sun shines in December in Nyköping?
What is the UV index intensity in December in Nyköping?
Average temperature in December
Nyköping, Sweden
- Average high temperature in December: 1.9°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The month with the lowest average high temperature is January (0.3°C).
- Average low temperature in December: -1.2°C
The month with the highest average low temperature is August (13.6°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average pressure in December
Nyköping, Sweden
- Average pressure in December: 1008.4mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.4mbar).
Average wind speed in December
Nyköping, Sweden
- Average wind speed in December: 18.8km/h
The windiest month (with the highest average wind speed) is December (18.8km/h).
The calmest month (with the lowest average wind speed) is July (13.4km/h).
Average humidity in December
Nyköping, Sweden
- Average humidity in December: 87%
The months with the highest relative humidity are January, February, November and December (87%).
The months with the lowest relative humidity are May and June (73%).
Average rainfall in December
Nyköping, Sweden
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Nyköping, Sweden
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Nyköping, Sweden
- Average snowfall in December: 46mm
The month with the highest snowfall is February (66mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Nyköping, Sweden
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Nyköping, Sweden
- Average sea temperature in December: 4.8°C
The best month for swimming (with the highest average sea temperature) is August (18.8°C).
The coldest month (with the lowest average sea temperature) is February (1.2°C).
Average daylight in December /
Average sunshine in December
Nyköping, Sweden
- Average daylight in December: 6h and 2min
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).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in December
Nyköping, Sweden
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is April (15.2 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in December
Nyköping, Sweden
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Nyköping, Sweden
- Average cloud cover in December: 65
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are June and August (Cloud cover 37).
Average visibility in December
Nyköping, Sweden
- Average visibility in December: 9km
The months with the highest visibility are April, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, May, October, November and December (9km).
