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 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 is marked by a minor reduction in average high-temperature, sliding from a cold 5.7°C (42.3°F) in November to a still icy 2.3°C (36.1°F). In Mörtviken, the nocturnal temperatures throughout December show a marginal dip from the daytime averages, settling at a subzero cold -0.5°C (31.1°F).Humidity
In December, the average relative humidity is 85%.Rainfall
In Mörtviken, in December, it is raining for 6.6 days, with typically 11mm (0.43") of accumulated precipitation. In Mörtviken, during the entire year, the rain falls for 88.9 days and collects up to 116mm (4.57") of precipitation.Snowfall
Months with snowfall in Mörtviken are January through May, October through December. In December, in Mörtviken, Sweden, it is snowing for 8 days. Throughout December, 18mm (0.71") of snow is accumulated. In Mörtviken, during the entire year, snow falls for 38.5 days and aggregates up to 78mm (3.07") of snow.Daylight
With an average of 6h and 18min of daylight, December has the shortest days of the year in Mörtviken.On the first day of December in Mörtviken, sunrise is at 08:15 and sunset at 14:54. On the last day of the month, sunrise is at 08:41 and sunset at 14:57 CET.
Sunshine
The month with the least sunshine is December, with an average of 2.5h of sunshine.UV index
In Mörtviken, Sweden, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Mörtviken?
What is the average humidity in December in Mörtviken?
How much does it rain in Mörtviken in December?
How much does it snow in Mörtviken in December?
What is the month with the shortest days in Mörtviken?
How many hours of daylight does Mörtviken have in December?
What time are sunrise and sunset in December in Mörtviken?
What is the month with the least sunshine in Mörtviken?
How long on average sun shines in December in Mörtviken?
What is the UV index reading in December in Mörtviken?
Average temperature in December
Mörtviken, Sweden
- Average high temperature in December: 2.3°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in December: -0.5°C
The month with the highest average low temperature is August (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (-2.3°C).
Average pressure in December
Mörtviken, Sweden
- Average pressure in December: 1007.9mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in December
Mörtviken, Sweden
- Average wind speed in December: 23.5km/h
The windiest month (with the highest average wind speed) is December (23.5km/h).
The calmest month (with the lowest average wind speed) is July (15.3km/h).
Average humidity in December
Mörtviken, Sweden
- Average humidity in December: 85%
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Mörtviken, Sweden
- Average rainfall in December: 11mm
The wettest months (with the highest rainfall) are July and August (14mm).
The driest month (with the least rainfall) is April (4mm).
Average rainfall days in December
Mörtviken, Sweden
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is August (10.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Mörtviken, Sweden
- Average snowfall in December: 18mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Mörtviken, Sweden
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mörtviken, Sweden
- Average daylight in December: 6h and 2min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in December: 2h and 3min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in December
Mörtviken, Sweden
- Average sunshine days in December: 14.4 days
The months with the most sunshine days are April and May (21.8 days).
The month with the least sunshine days is December (14.4 days).
Average UV index in December
Mörtviken, Sweden
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Mörtviken, Sweden
- Average cloud cover in December: 64
The months with the most cloud cover are January and February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Mörtviken, 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).
