December weather forecastSianowo, Poland
December
Weather in December
The first month of the winter, December, is still a cold month in Sianowo, Poland, with an average temperature ranging between min -0.4°C (31.3°F) and max 2.5°C (36.5°F).Temperature
In December, the meteorological conditions change slightly, with the average high-temperature moving from a chilly 6.9°C (44.4°F) in November to a wintry 2.5°C (36.5°F). Nights in December cool down in Sianowo, indicating a minor disparity from daytime highs with an average low-temperature of -0.4°C (31.3°F).Humidity
The months with the highest humidity in Sianowo are January, February and December, with an average relative humidity of 87%.Rainfall
In Sianowo, in December, during 13.6 rainfall days, 42mm (1.65") of precipitation is typically accumulated. In Sianowo, during the entire year, the rain falls for 172.5 days and collects up to 497mm (19.57") of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Sianowo, in December, during 11 snowfall days, 110mm (4.33") of snow is typically accumulated. Throughout the year, there are 58 snowfall days, and 437mm (17.2") of snow is accumulated.Daylight
The month with the shortest days in Sianowo is December, with an average of 7h and 24min of daylight.On the first day of the month, sunrise is at 07:45 and sunset at 15:27. On the last day of December, in Sianowo, sunrise is at 08:08 and sunset at 15:32 CET.
Sunshine
The average sunshine in December is 3.1h.UV index
The months with the lowest UV index in Sianowo, Poland, are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sianowo, Poland
- Average high temperature in December: 2.5°C
The warmest month (with the highest average high temperature) is August (22.5°C).
The month with the lowest average high temperature is January (0.6°C).
- Average low temperature in December: -0.4°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is January (-2.4°C).
Average pressure in December
Sianowo, Poland
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is October (1016.6mbar).
The months with the lowest atmospheric pressure are July and December (1013.2mbar).
Average wind speed in December
Sianowo, Poland
- 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 (12.1km/h).
Average humidity in December
Sianowo, Poland
- Average humidity in December: 87%
The months with the highest relative humidity are January, February and December (87%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Sianowo, Poland
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is July (71mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in December
Sianowo, Poland
- Average rainfall days in December: 13.6 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in December
Sianowo, Poland
- Average snowfall in December: 110mm
The month with the highest snowfall is January (128mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Sianowo, Poland
- Average snowfall days in December: 11 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sianowo, Poland
- Average daylight in December: 7h and 24min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in December: 3h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Sianowo, Poland
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is April (15 days).
The month with the least sunshine days is December (7.5 days).
Average UV index in December
Sianowo, Poland
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Sianowo, Poland
- Average cloud cover in December: 69
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
Sianowo, Poland
- Average visibility in December: 9km
The months with the highest visibility are June, August and September (10km).
The months with the lowest visibility are January and February (8km).
