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
The average high-temperature drops in December, from November's frosty 7.5°C (45.5°F) to a wintry 2.5°C (36.5°F). December nights witness a slight temperature decrease, averaging at a freezing cold -0.9°C (30.4°F).Humidity
In Niwna, the average relative humidity in December is 86%.Rainfall
In Niwna, in December, during 12.1 rainfall days, 34mm (1.34") of precipitation is typically accumulated. In Niwna, during the entire year, the rain falls for 166.9 days and collects up to 477mm (18.78") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Niwna, Poland, in December, during 11.3 snowfall days, 74mm (2.91") of snow is typically accumulated. In Niwna, during the entire year, snow falls for 50.6 days and aggregates up to 384mm (15.12") of snow.Daylight
December has the shortest days of the year in Niwna, with an average of 7h and 54min of daylight.On the first day of December in Niwna, Poland, sunrise is at 07:24 and sunset at 15:32. On the last day of the month, sunrise is at 07:45 and sunset at 15:38 CET.
Sunshine
The average sunshine in December is 3.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Niwna. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the UV index of 1 transforms into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Stay sun-safe with clothing that is both closely woven and worn loosely. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
How cold is it in Niwna in December?
What is the average humidity in December in Niwna?
How many days does it rain in December in Niwna?
How much does it snow in Niwna in December?
What is the month with the shortest days in Niwna?
What is the average length of the day in December in Niwna?
When are sunrise and sunset in December in Niwna?
How long on average sun shines in December in Niwna?
When is the lowest UV index in Niwna?
What is the UV index reading in December in Niwna?
Average temperature in December
Niwna, Poland
- Average high temperature in December: 2.5°C
The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is January (0°C).
- Average low temperature in December: -0.9°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in December
Niwna, Poland
- Average pressure in December: 1016.4mbar
The month with the highest atmospheric pressure is October (1018.1mbar).
The month with the lowest atmospheric pressure is July (1013.7mbar).
Average wind speed in December
Niwna, Poland
- Average wind speed in December: 15.3km/h
The windiest month (with the highest average wind speed) is December (15.3km/h).
The calmest month (with the lowest average wind speed) is August (11km/h).
Average humidity in December
Niwna, Poland
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (67%).
Average rainfall in December
Niwna, Poland
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is June (65mm).
The driest month (with the least rainfall) is November (23mm).
Average rainfall days in December
Niwna, Poland
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in December
Niwna, Poland
- Average snowfall in December: 74mm
The month with the highest snowfall is January (138mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Niwna, Poland
- Average snowfall days in December: 11.3 days
The month with the highest number of snowfall days is January (16.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Niwna, Poland
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Niwna, Poland
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in December
Niwna, Poland
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Niwna, Poland
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Niwna, Poland
- Average visibility in December: 8km
The month with the highest visibility is August (10km).
The month with the lowest visibility is January (7km).
Niwna, Poland
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