December weather forecastVisby, Sweden

December

Weather in December

December, the first month of the winter in Visby, is still a cold month, with temperature in the range of an average low of 1.6°C (34.9°F) and an average high of 3.7°C (38.7°F).

Temperature

The onset of December entails a subtle temperature shift, as the average high-temperature eases from a chilly 7°C (44.6°F) in November to a cold 3.7°C (38.7°F). December's average low-temperature in Visby, Sweden, is a still icy 1.6°C (34.9°F), reflecting a minor difference from the day's peak temperatures.

Humidity

The average relative humidity in December is 83%.

Rainfall

In December, in Visby, the rain falls for 12.5 days. Throughout December, 34mm (1.34") of precipitation is accumulated. Throughout the year, in Visby, there are 138.9 rainfall days, and 352mm (13.86") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Visby, in December, during 9.2 snowfall days, 54mm (2.13") of snow is typically accumulated. In Visby, during the entire year, snow falls for 43.3 days and aggregates up to 237mm (9.33") of snow.

Sea temperature

In December, the average sea temperature is 4.7°C (40.5°F).
Note: In the sport of swimming, this scenario is extremely cold, treacherous, and fatal. If not protected by insulated waterproof clothing, hypothermia ensues quickly.

Daylight

December has the shortest days of the year in Visby, Sweden, with an average of 6h and 42min of daylight.
On the first day of the month, sunrise is at 08:04 and sunset at 15:07. On the last day of December, in Visby, sunrise is at 08:29 and sunset at 15:10 CET.

Sunshine

In December, the average sunshine in Visby is 3h.

UV index

In Visby, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

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

Frequently asked questions

The average high-temperature and low-temperature in Visby during December are 3.7°C (38.7°F) and 1.6°C (34.9°F) respectively.

In December, the average relative humidity in Visby is 83%.

In Visby, Sweden, during December, the rain falls for 12.5 days and regularly aggregates up to 34mm (1.34") of precipitation.

In Visby, Sweden, in December, during 9.2 snowfall days, 54mm (2.13") of snow is typically accumulated.

In Visby, Sweden, in December, the average water temperature is 4.7°C (40.5°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 42min of daylight, December has the shortest days of the year.

In Visby, Sweden, the average day length in December is 6h and 41min.

On the first day of December in Visby, sunrise is at 08:04 and sunset at 15:07. On the last day of the month, sunrise is at 08:29 and sunset at 15:10 CET.

In December, the average sunshine duration in Visby is 3h.

In December, the average daily maximum UV index in Visby is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

7°C

3.7°C

2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

23.5km/h

26.5km/h

25.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

2.5

9.2

12.5

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

10.6

9.1

9.8

Average UV index

Average cloud cover

66%

70%

Average visibility

9km

Average temperature in December
Visby, Sweden

Average high temperature in December: 3.7°C

The warmest month (with the highest average high temperature) is July (19.8°C).
The month with the lowest average high temperature is February (1.8°C).

Average low temperature in December: 1.6°C

The month with the highest average low temperature is August (15.6°C).
The coldest month (with the lowest average low temperature) is February (-0.7°C).

Average pressure in December
Visby, Sweden

Average pressure in December: 1009.3mbar

The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is December (1009.3mbar).

Average wind speed in December
Visby, Sweden

Average wind speed in December: 25.2km/h

The windiest month (with the highest average wind speed) is December (25.2km/h).
The calmest month (with the lowest average wind speed) is May (16.6km/h).

Average humidity in December
Visby, Sweden

Average humidity in December: 83%

The month with the highest relative humidity is November (84%).
The months with the lowest relative humidity are May and June (75%).

Average rainfall in December
Visby, Sweden

Average rainfall in December: 34mm

The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (13mm).

Average rainfall days in December
Visby, Sweden

Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is October (14.4 days).
The month with the least rainy days is February (7 days).

Average snowfall in December
Visby, Sweden

Average snowfall in December: 54mm

The month with the highest snowfall is January (63mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December
Visby, Sweden

Average snowfall days in December: 9.2 days

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in December
Visby, Sweden

Average sea temperature in December: 4.7°C

The best month for swimming (with the highest average sea temperature) is August (18.9°C).
The coldest months (with the lowest average sea temperature) are February and March (1.8°C).

Average daylight in December /
Average sunshine in December
Visby, Sweden

Average daylight in December: 6h and 42min

The month with the longest days is June (Average daylight: 18h and 0min).
The month with the shortest days is December (Average daylight: 6h and 42min).

Average sunshine in December: 3h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in December
Visby, Sweden

Average sunshine days in December: 9.1 days

The month with the most sunshine days is May (18.2 days).
The month with the least sunshine days is December (9.1 days).

Average UV index in December
Visby, Sweden

Average UV index in December: 2

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

Average cloud cover in December
Visby, Sweden

Average cloud cover in December: 70

The months with the most cloud cover are January and December (Cloud cover 70).
The months with the least cloud cover are June and August (Cloud cover 32).

Average visibility in December
Visby, Sweden

Average visibility in December: 9km

The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).