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
December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's chilly 7.5°C (45.5°F) to a cold 4.1°C (39.4°F). With a barely noticeable fluctuation in temperature, Siim reaches an average low of 1.3°C (34.3°F) during the December nights.Humidity
The months with the highest humidity are November and December, with an average relative humidity of 90%.Rainfall
In Siim, during December, the rain falls for 11.2 days and regularly aggregates up to 17mm (0.67") of precipitation. Throughout the year, there are 138 rainfall days, and 260mm (10.24") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Siim, in December, during 4.5 snowfall days, 11mm (0.43") of snow is typically accumulated. In Siim, during the entire year, snow falls for 25.1 days and aggregates up to 78mm (3.07") of snow.Daylight
With an average of 7h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 08:28 and sunset at 15:51. On the last day of December, sunrise is at 08:52 and sunset at 15:55 CET.
Sunshine
The average sunshine in December is 3.4h.UV index
In Siim, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What are the most humid months?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Siim have in December?
When are sunrise and sunset in December?
How long on average sun shines in December in Siim?
How high is the UV index in December?
Average temperature in December
Siim, Denmark
- Average high temperature in December: 4.1°C
The warmest month (with the highest average high temperature) is July (20.9°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in December: 1.3°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (-0.5°C).
Average pressure in December
Siim, Denmark
- Average pressure in December: 1010mbar
The months with the highest atmospheric pressure are April and May (1015.4mbar).
The month with the lowest atmospheric pressure is December (1010mbar).
Average wind speed in December
Siim, Denmark
- Average wind speed in December: 16.8km/h
The windiest month (with the highest average wind speed) is December (16.8km/h).
The calmest month (with the lowest average wind speed) is August (12.9km/h).
Average humidity in December
Siim, Denmark
- Average humidity in December: 90%
The months with the highest relative humidity are November and December (90%).
The months with the lowest relative humidity are April and May (74%).
Average rainfall in December
Siim, Denmark
- Average rainfall in December: 17mm
The wettest month (with the highest rainfall) is July (39mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in December
Siim, Denmark
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in December
Siim, Denmark
- Average snowfall in December: 11mm
The month with the highest snowfall is January (23mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Siim, Denmark
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Siim, Denmark
- Average daylight in December: 7h and 1min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 6min).
Average sunshine days in December
Siim, Denmark
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is February (12.1 days).
Average UV index in December
Siim, Denmark
- 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
Siim, Denmark
- Average cloud cover in December: 69
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 46).
Average visibility in December
Siim, Denmark
- Average visibility in December: 9km
The months with the highest visibility are February, April, May, June, August, September and December (9km).
The months with the lowest visibility are January, March, July, October and November (8km).
