December weather forecastNyköping, Sweden

December

Weather in December

The first month of the winter, December, is also a wintry month in Nyköping, Sweden, with temperature in the range of an average high of 1.9°C (35.4°F) and an average low of -1.2°C (29.8°F).

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.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Nyköping, records 1.9°C (35.4°F), while the low-temperature is -1.2°C (29.8°F).

January, February, November and December, with an average relative humidity of 87%, are most humid months in Nyköping.

In Nyköping, the average relative humidity in December is 87%.

In Nyköping, in December, it is raining for 9.3 days, with typically 27mm (1.06") of accumulated precipitation.

In December, in Nyköping, Sweden, it is snowing for 8.5 days. Throughout December, 46mm (1.81") of snow is accumulated.

In Nyköping, Sweden, the average seawater temperature in December is 4.8°C (40.6°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

The month with the shortest days in Nyköping, Sweden, is December, with an average of 6h and 24min of daylight.

The average day length in December is 6h and 24min.

In December, on the first day of the month, sunrise is at 08:17 and sunset at 15:04. On the last day of the month, in Nyköping, sunrise is at 08:43 and sunset at 15:06 CET.

The month with the least sunshine is December, with an average of 2.9h of sunshine.

In December, the average sunshine duration in Nyköping is 2.9h.

In December, the average daily maximum UV index in Nyköping is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

5.6°C

1.9°C

0.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

18.1km/h

19.6km/h

19.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

2.5

8.5

10.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

12.6

12.7

13.6

Average UV index

Average cloud cover

62%

65%

Average visibility

9km

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 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).

Average sunshine in December: 2h and 54min

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).