December weather forecast
Sigtuna, Sweden

December

Weather in December

December, the first month of the winter in Sigtuna, is also a wintry month, with an average temperature varying between 1°C (33.8°F) and -2.5°C (27.5°F).

Temperature

December signifies a minor drop in average high-temperature, transitioning from an icy 4.8°C (40.6°F) in November to a still cold 1°C (33.8°F). An average low-temperature of -2.5°C (27.5°F), slightly less than the daytime peak, marks the month of December.

Humidity

January, February and December, with an average relative humidity of 89%, are the most humid months in Sigtuna.

Rainfall

In December, the rain falls for 8.3 days. Throughout December, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 141.1 rainfall days, and 377mm (14.84") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Sigtuna. In Sigtuna, Sweden, in December, during 9.7 snowfall days, 73mm (2.87") of snow is typically accumulated. Throughout the year, in Sigtuna, there are 49.9 snowfall days, and 368mm (14.49") of snow is accumulated.

Daylight

December has the shortest days of the year in Sigtuna, with an average of 6h and 12min of daylight.
On the first day of December in Sigtuna, sunrise is at 08:21 and sunset at 14:54. On the last day of the month, sunrise is at 08:47 and sunset at 14:56 CET.

Sunshine

December has the least sunshine of the year, with an average of 2.5h of sunshine.

UV index

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average UV index of 2 in December transforms into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.

Frequently asked questions

How cold is December in Sigtuna?
December temperatures vary between a high-temperature of 1°C (33.8°F) and a low-temperature of -2.5°C (27.5°F).
What are the most humid months in Sigtuna?
January, February and December, with an average relative humidity of 89%, are most humid months in Sigtuna.
What is the average humidity in December in Sigtuna?
In Sigtuna, Sweden, the average relative humidity in December is 89%.
How much does it rain in Sigtuna in December?
In Sigtuna, in December, during 8.3 rainfall days, 29mm (1.14") of precipitation is typically accumulated.
How much does it snow in Sigtuna in December?
In Sigtuna, Sweden, in December, snow falls for 9.7 days, with typically accumulated 73mm (2.87") of snow.
What is the month with the shortest days in Sigtuna?
December has the shortest days of the year in Sigtuna, with an average of 6h and 12min of daylight.
How many hours of daylight does Sigtuna have in December?
In December, the average day length in Sigtuna is 6h and 9min.
When is the sunrise / sunset in December in Sigtuna?
In December, on the first day of the month, sunrise is at 08:21 and sunset at 14:54. On the last day of the month, sunrise is at 08:47 and sunset at 14:56 CET.
What is the month with the least sunshine in Sigtuna?
With an average of 2.5h of sunshine, December has the least sunshine of the year in Sigtuna, Sweden.
How many hours of sunshine does Sigtuna have in December?
In Sigtuna, the average sunshine duration in December is 2.5h.
What is the UV index reading in December in Sigtuna?
In December, the average daily maximum UV index in Sigtuna, Sweden, is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Sigtuna, Sweden
Average temperature in December
Sigtuna, Sweden
  • Average high temperature in December: 1°C

The warmest month (with the highest average high temperature) is July (21.6°C).
The month with the lowest average high temperature is January (-0.9°C).

  • Average low temperature in December: -2.5°C

The month with the highest average low temperature is July (13°C).
The coldest month (with the lowest average low temperature) is February (-4.3°C).

Average pressure in December - Sigtuna, Sweden
Average pressure in December
Sigtuna, Sweden
  • Average pressure in December: 1007.6mbar

The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).

Average wind speed in December - Sigtuna, Sweden
Average wind speed in December
Sigtuna, Sweden
  • Average wind speed in December: 16.2km/h

The windiest month (with the highest average wind speed) is December (16.2km/h).
The calmest months (with the lowest average wind speed) are July and August (11.5km/h).

Average humidity in December - Sigtuna, Sweden
Average humidity in December
Sigtuna, Sweden
  • Average humidity in December: 89%

The months with the highest relative humidity are January, February and December (89%).
The month with the lowest relative humidity is May (71%).

Average rainfall in December - Sigtuna, Sweden
Average rainfall in December
Sigtuna, Sweden
  • Average rainfall in December: 29mm

The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is April (17mm).

Average rainfall days in December - Sigtuna, Sweden
Average rainfall days in December
Sigtuna, Sweden
  • Average rainfall days in December: 8.3 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (5.4 days).

Average snowfall in December - Sigtuna, Sweden
Average snowfall in December
Sigtuna, Sweden
  • Average snowfall in December: 73mm

The month with the highest snowfall is February (99mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December - Sigtuna, Sweden
Average snowfall days in December
Sigtuna, Sweden
  • Average snowfall days in December: 9.7 days

The month with the highest number of snowfall days is February (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Sigtuna, Sweden
Average daylight in December /
Average sunshine in December
Sigtuna, Sweden
  • Average daylight in December: 6h and 1min

The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 12min).

  • Average sunshine in December: 2h and 3min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).

Average sunshine days in December - Sigtuna, Sweden
Average sunshine days in December
Sigtuna, Sweden
  • Average sunshine days in December: 14.4 days

The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in December - Sigtuna, Sweden
Average UV index in December
Sigtuna, Sweden
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in December - Sigtuna, Sweden
Average cloud cover in December
Sigtuna, Sweden
  • Average cloud cover in December: 65

The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 39).

Average visibility in December - Sigtuna, Sweden
Average visibility in December
Sigtuna, Sweden
  • Average visibility in December: 8km

The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).

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