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
As November transitions to December, the average high-temperature falls from a frosty 7°C (44.6°F) to a cold 1.4°C (34.5°F). A slight dip in temperature to a subzero cold -2.3°C (27.9°F) marks the average nights during December.Humidity
In December, the average relative humidity in Jacnia is 89%.Rainfall
In Jacnia, in December, during 7.6 rainfall days, 23mm (0.91") of precipitation is typically accumulated. Throughout the year, in Jacnia, there are 135.9 rainfall days, and 341mm (13.43") of precipitation is accumulated.Snowfall
Months with snowfall in Jacnia are January through April, October through December. In December, it is snowing for 13 days. Throughout December, 73mm (2.87") of snow is accumulated. Throughout the year, there are 58.3 snowfall days, and 313mm (12.32") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 6min of daylight.On the first day of December, sunrise is at 07:07 and sunset at 15:25. On the last day of the month, sunrise is at 07:28 and sunset at 15:32 CET.
Sunshine
The average sunshine in December in Jacnia is 3.1h.UV index
The months with the lowest UV index in Jacnia are January, February and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 1 during December, leads to the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Enhance your sun protection with tightly woven, yet airy clothing. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold is December in Jacnia?
What is the average humidity in December in Jacnia?
How much does it rain in Jacnia in December?
How much does it snow in Jacnia in December?
What is the month with the shortest days in Jacnia?
What is the average length of the day in December in Jacnia?
When are sunrise and sunset in December in Jacnia?
How long on average sun shines in December in Jacnia?
When is the lowest UV index in Jacnia?
What is the UV index reading in December in Jacnia?
Average temperature in December
Jacnia, Poland
- Average high temperature in December: 1.4°C
The warmest month (with the highest average high temperature) is August (25.2°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in December: -2.3°C
The month with the highest average low temperature is July (14°C).
The coldest month (with the lowest average low temperature) is January (-4.8°C).
Average pressure in December
Jacnia, Poland
- Average pressure in December: 1017.8mbar
The month with the highest atmospheric pressure is October (1019.1mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in December
Jacnia, Poland
- Average wind speed in December: 13.9km/h
The windiest month (with the highest average wind speed) is December (13.9km/h).
The calmest month (with the lowest average wind speed) is August (9.5km/h).
Average humidity in December
Jacnia, 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 (68%).
Average rainfall in December
Jacnia, Poland
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is May (52mm).
The driest month (with the least rainfall) is November (15mm).
Average rainfall days in December
Jacnia, Poland
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in December
Jacnia, Poland
- Average snowfall in December: 73mm
The month with the highest snowfall is January (97mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Jacnia, Poland
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is January (16.3 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
Jacnia, Poland
- Average daylight in December: 8h and 1min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Jacnia, Poland
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in December
Jacnia, 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 and December (UV index 1).
Average cloud cover in December
Jacnia, Poland
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Jacnia, Poland
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
Jacnia, Poland
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