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
Weather in December
Temperature
With December's arrival, Sielnica's weather changes as the average high-temperature falls from a chilly 7.3°C (45.1°F) in November to a wintry 0.9°C (33.6°F). December nights in Sielnica, Poland, witness a mild cool down to an average low of -3.2°C (26.2°F).Humidity
In Sielnica, the average relative humidity in December is 89%.Rainfall
In Sielnica, during December, the rain falls for 8.1 days and regularly aggregates up to 32mm (1.26") of precipitation. In Sielnica, during the entire year, the rain falls for 146.8 days and collects up to 453mm (17.83") of precipitation.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 13.4 days and accumulates 142mm (5.59") of snow.Daylight
With an average of 8h and 12min of daylight, December has the shortest days of the year in Sielnica.On the first day of December in Sielnica, sunrise is at 07:07 and sunset at 15:32. On the last day of the month, sunrise is at 07:28 and sunset at 15:39 CET.
Sunshine
In Sielnica, Poland, the average sunshine in December is 3.6h.UV index
The months with the lowest UV index in Sielnica are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 1 during December translates into these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
How cold is December in Sielnica?
What is the average humidity in December in Sielnica?
How many days does it rain in December in Sielnica?
What is the snowiest month in Sielnica?
How many days does it snow in December in Sielnica?
What is the month with the shortest days in Sielnica?
How many hours of daylight does Sielnica have in December?
When is the sunrise / sunset in December in Sielnica?
How many hours of sunshine does Sielnica have in December?
When is the lowest UV index in Sielnica?
How high is the UV index in December in Sielnica?
Average temperature in December
Sielnica, Poland
- Average high temperature in December: 0.9°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (-1°C).
- Average low temperature in December: -3.2°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).
Average pressure in December
Sielnica, Poland
- Average pressure in December: 1019.1mbar
The month with the highest atmospheric pressure is October (1019.2mbar).
The months with the lowest atmospheric pressure are June and July (1014.3mbar).
Average wind speed in December
Sielnica, Poland
- Average wind speed in December: 14km/h
The windiest month (with the highest average wind speed) is December (14km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).
Average humidity in December
Sielnica, Poland
- Average humidity in December: 89%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (73%).
Average rainfall in December
Sielnica, Poland
- Average rainfall in December: 32mm
The wettest month (with the highest rainfall) is May (65mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days in December
Sielnica, Poland
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Sielnica, Poland
- Average snowfall in December: 142mm
The month with the highest snowfall is December (142mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Sielnica, Poland
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is January (16 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sielnica, Poland
- Average daylight in December: 8h and 1min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
Sielnica, Poland
- Average sunshine days in December: 12.4 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in December
Sielnica, Poland
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Sielnica, Poland
- Average cloud cover in December: 66
The months with the most cloud cover are January and February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Sielnica, Poland
- Average visibility in December: 8km
The months with the highest visibility are April, August and September (9km).
The months with the lowest visibility are January and February (7km).
Sielnica, Poland
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