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
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a frosty 7.1°C (44.8°F) to a cold 2.4°C (36.3°F). Siecień's nighttime average temperature in December drops marginally from the daytime highs, settling at a freezing cold -1.3°C (29.7°F).Humidity
In December, the average relative humidity is 88%.Rainfall
In Siecień, during December, the rain falls for 10.5 days and regularly aggregates up to 25mm (0.98") of precipitation. Throughout the year, there are 138.8 rainfall days, and 352mm (13.86") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Siecień. In December, it is snowing for 7.5 days. Throughout December, 36mm (1.42") of snow is accumulated. Throughout the year, there are 37.5 snowfall days, and 242mm (9.53") of snow is accumulated.Daylight
With an average of 7h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:31 and sunset at 15:31. On the last day of December, sunrise is at 07:53 and sunset at 15:37 CET.
Sunshine
The average sunshine in December in Siecień is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 1 during December translates into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in Siecień in December?
How much does it snow in December?
What is the month with the shortest days in Siecień?
What is the average length of the day in December?
When is the sunrise / sunset in December in Siecień?
How long on average sun shines in December?
When is the lowest UV index in Siecień?
How high is the UV index in December?
Average temperature in December
Siecień, Poland
- Average high temperature in December: 2.4°C
The warmest month (with the highest average high temperature) is August (24.7°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in December: -1.3°C
The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).
Average pressure in December
Siecień, Poland
- Average pressure in December: 1015.7mbar
The month with the highest atmospheric pressure is October (1017.8mbar).
The month with the lowest atmospheric pressure is July (1013.5mbar).
Average wind speed in December
Siecień, Poland
- Average wind speed in December: 15.1km/h
The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in December
Siecień, Poland
- Average humidity in December: 88%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (67%).
Average rainfall in December
Siecień, Poland
- Average rainfall in December: 25mm
The wettest month (with the highest rainfall) is May (51mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Siecień, Poland
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Siecień, Poland
- Average snowfall in December: 36mm
The month with the highest snowfall is January (81mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Siecień, Poland
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Siecień, Poland
- Average daylight in December: 7h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Siecień, Poland
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in December
Siecień, Poland
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Siecień, Poland
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Siecień, Poland
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (7km).
