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
December
Weather in December
Temperature
The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a chilly 8.5°C (47.3°F) in November to a cold 2.5°C (36.5°F). During the month of December, Joniny identifies an average nighttime low-temperature of -1.7°C (28.9°F), slightly lower than its daytime counterpart.Humidity
In December, the average relative humidity is 85%.Rainfall
In Joniny, in December, it is raining for 7.8 days, with typically 25mm (0.98") of accumulated precipitation. In Joniny, during the entire year, the rain falls for 131.2 days and collects up to 389mm (15.31") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Joniny, in December, during 9.5 snowfall days, 65mm (2.56") of snow is typically accumulated. Throughout the year, in Joniny, there are 46.7 snowfall days, and 304mm (11.97") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 12min of daylight.On the first day of the month, sunrise is at 07:12 and sunset at 15:36. On the last day of December, in Joniny, sunrise is at 07:33 and sunset at 15:43 CET.
Sunshine
In December, the average sunshine in Joniny is 3.8h.UV index
The months with the lowest UV index in Joniny, Poland, are November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Joniny?
What is the average humidity in December in Joniny?
How much does it rain in Joniny in December?
How many days does it snow in December in Joniny?
What is the month with the shortest days in Joniny?
What is the average length of the day in December in Joniny?
When is the sunrise / sunset in December in Joniny?
How long on average sun shines in December in Joniny?
When is the lowest UV index in Joniny?
What is the UV index reading in December in Joniny?
Average temperature in December
Joniny, Poland
- Average high temperature in December: 2.5°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 (0.3°C).
- Average low temperature in December: -1.7°C
The month with the highest average low temperature is July (14.1°C).
The coldest month (with the lowest average low temperature) is January (-3.9°C).
Average pressure in December
Joniny, Poland
- Average pressure in December: 1018.6mbar
The month with the highest atmospheric pressure is October (1019mbar).
The month with the lowest atmospheric pressure is July (1014.4mbar).
Average wind speed in December
Joniny, Poland
- Average wind speed in December: 12.5km/h
The windiest month (with the highest average wind speed) is March (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in December
Joniny, Poland
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Joniny, Poland
- Average rainfall in December: 25mm
The wettest month (with the highest rainfall) is May (61mm).
The driest month (with the least rainfall) is March (18mm).
Average rainfall days in December
Joniny, Poland
- Average rainfall days in December: 7.8 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Joniny, Poland
- Average snowfall in December: 65mm
The month with the highest snowfall is January (87mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Joniny, Poland
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Joniny, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in December
Joniny, Poland
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is November (17.9 days).
The months with the least sunshine days are February and June (11.6 days).
Average UV index in December
Joniny, 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 November and December (UV index 1).
Average cloud cover in December
Joniny, Poland
- Average cloud cover in December: 63
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Joniny, Poland
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and February (8km).
