December weather forecastSupraśl, Poland
December
Weather in December
The first month of the winter, December, is also an icy month in Supraśl, Poland, with an average temperature varying between 0.8°C (33.4°F) and -2°C (28.4°F).Temperature
With December's arrival, Supraśl's weather changes as the average high-temperature falls from 5.9°C (42.6°F) in November to a still cold 0.8°C (33.4°F). In December, a low-temperature average of -2°C (28.4°F) is characteristic of Supraśl, marking a minor shift from daytime temperatures.Humidity
In Supraśl, the average relative humidity in December is 90%.Rainfall
In December, in Supraśl, the rain falls for 11.4 days. Throughout December, 43mm (1.69") of precipitation is accumulated. In Supraśl, during the entire year, the rain falls for 164.4 days and collects up to 515mm (20.28") of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, in Supraśl, it is snowing for 15.5 days. Throughout December, 126mm (4.96") of snow is accumulated. In Supraśl, during the entire year, snow falls for 71.5 days and aggregates up to 596mm (23.46") of snow.Daylight
With an average of 7h and 36min of daylight, December has the shortest days of the year in Supraśl.On the first day of the month, sunrise is at 07:18 and sunset at 15:12. On the last day of December, in Supraśl, Poland, sunrise is at 07:40 and sunset at 15:18 CET.
Sunshine
In December, the average sunshine in Supraśl is 2.6h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a regular UV index of 1 translates into these guidelines:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Supraśl, Poland
- Average high temperature in December: 0.8°C
The warmest months (with the highest average high temperature) are July and August (24.2°C).
The month with the lowest average high temperature is January (-1.5°C).
- Average low temperature in December: -2°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).
Average pressure in December
Supraśl, Poland
- Average pressure in December: 1015.5mbar
The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1013.1mbar).
Average wind speed in December
Supraśl, Poland
- Average wind speed in December: 13.2km/h
The windiest month (with the highest average wind speed) is December (13.2km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).
Average humidity in December
Supraśl, Poland
- Average humidity in December: 90%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are April and August (70%).
Average rainfall in December
Supraśl, Poland
- Average rainfall in December: 43mm
The wettest month (with the highest rainfall) is June (69mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in December
Supraśl, Poland
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in December
Supraśl, Poland
- Average snowfall in December: 126mm
The month with the highest snowfall is January (192mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Supraśl, Poland
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (20.3 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
Supraśl, Poland
- Average daylight in December: 7h and 36min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in December: 2h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 12min).
Average sunshine days in December
Supraśl, Poland
- Average sunshine days in December: 7.8 days
The month with the most sunshine days is October (15.5 days).
The months with the least sunshine days are January and February (6.8 days).
Average UV index in December
Supraśl, 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, February, November and December (UV index 1).
Average cloud cover in December
Supraśl, Poland
- Average cloud cover in December: 75
The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Supraśl, Poland
- Average visibility in December: 7km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (6km).
