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 onset of December is marked by a minor decrease in temperature, transitioning from 5°C (41°F) in November to a still icy 1.5°C (34.7°F). Sya experiences a steady nighttime temperature of -1.6°C (29.1°F) throughout the month of December.Humidity
The average relative humidity in December in Sya is 88%.Rainfall
In Sya, Sweden, during December, the rain falls for 10.9 days and regularly aggregates up to 32mm (1.26") of precipitation. In Sya, during the entire year, the rain falls for 153.9 days and collects up to 417mm (16.42") of precipitation.Snowfall
January through May, October through December are months with snowfall in Sya. In Sya, in December, snow falls for 11.3 days, with typically accumulated 92mm (3.62") of snow. In Sya, during the entire year, snow falls for 56.1 days and aggregates up to 478mm (18.82") of snow.Daylight
December has the shortest days of the year, with an average of 6h and 30min of daylight.On the first day of the month, sunrise is at 08:21 and sunset at 15:14. On the last day of December, sunrise is at 08:47 and sunset at 15:17 CET.
Sunshine
The months with the least sunshine are February and December, with an average of 3.2h of sunshine.UV index
In December, the average daily maximum UV index in Sya is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Keep in mind! Snow's reflective quality can nearly 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 it in Sya in December?
What is the average humidity in December in Sya?
How much does it rain in Sya in December?
How many days does it snow in December in Sya?
What is the month with the shortest days in Sya?
What is the average length of the day in December in Sya?
When is the sunrise / sunset in December in Sya?
What are the months with the least sunshine in Sya?
How many hours of sunshine does Sya have in December?
How high is the UV index in December in Sya?
Average temperature in December
Sya, Sweden
- Average high temperature in December: 1.5°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in December: -1.6°C
The month with the highest average low temperature is July (12.5°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).
Average pressure in December
Sya, Sweden
- Average pressure in December: 1008.8mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.8mbar).
Average wind speed in December
Sya, Sweden
- Average wind speed in December: 15.8km/h
The windiest month (with the highest average wind speed) is December (15.8km/h).
The calmest month (with the lowest average wind speed) is May (12.2km/h).
Average humidity in December
Sya, Sweden
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (70%).
Average rainfall in December
Sya, Sweden
- Average rainfall in December: 32mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in December
Sya, Sweden
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is February (7.2 days).
Average snowfall in December
Sya, Sweden
- Average snowfall in December: 92mm
The month with the highest snowfall is February (121mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Sya, Sweden
- Average snowfall days in December: 11.3 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sya, Sweden
- Average daylight in December: 6h and 3min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 3h and 12min).
Average sunshine days in December
Sya, Sweden
- Average sunshine days in December: 10.2 days
The month with the most sunshine days is April (15.3 days).
The month with the least sunshine days is December (10.2 days).
Average UV index in December
Sya, Sweden
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Sya, Sweden
- Average cloud cover in December: 68
The months with the most cloud cover are February and December (Cloud cover 68).
The months with the least cloud cover are June and July (Cloud cover 41).
Average visibility in December
Sya, 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).
