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
Start of December brings a shift in the average high-temperature, falling from November's frosty 9.9°C (49.8°F) to a cold 4.9°C (40.8°F). The nighttime temperature, during December, averages of -1.1°C (30°F).Humidity
In Onek, the average relative humidity in December is 86%.Rainfall
In Onek, during December, the rain falls for 11 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, there are 159.4 rainfall days, and 758mm (29.84") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Onek, during December, snow falls for 5.4 days and regularly aggregates up to 129mm (5.08") of snow. Throughout the year, in Onek, there are 28.3 snowfall days, and 575mm (22.64") of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:20 and sunset at 16:18. On the last day of December, sunrise is at 07:40 and sunset at 16:26 CET.
Sunshine
In Onek, the average sunshine in December is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 2 during December translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December in Onek?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Onek have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Onek have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Onek, Slovenia
- Average high temperature in December: 4.9°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in December: -1.1°C
The months with the highest average low temperature are July and August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in December
Onek, Slovenia
- Average pressure in December: 1020.2mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The months with the lowest atmospheric pressure are May and June (1014.8mbar).
Average wind speed in December
Onek, Slovenia
- Average wind speed in December: 6.3km/h
The windiest month (with the highest average wind speed) is March (8.2km/h).
The calmest month (with the lowest average wind speed) is August (5.6km/h).
Average humidity in December
Onek, Slovenia
- Average humidity in December: 86%
The months with the highest relative humidity are January and November (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Onek, Slovenia
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is May (106mm).
The driest month (with the least rainfall) is January (42mm).
Average rainfall days in December
Onek, Slovenia
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is February (9.7 days).
Average snowfall in December
Onek, Slovenia
- Average snowfall in December: 129mm
The month with the highest snowfall is February (154mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Onek, Slovenia
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (9 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
Onek, Slovenia
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Onek, Slovenia
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (8.3 days).
Average UV index in December
Onek, Slovenia
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Onek, Slovenia
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Onek, Slovenia
- Average visibility in December: 8km
The months with the highest visibility are April, June, July and August (9km).
The months with the lowest visibility are January, February, October and November (7km).
