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
In Rastnik, the average high-temperature in December decreases from a moderate 13.1°C (55.6°F) in November to a chilly 7.3°C (45.1°F). In December, the average low-temperature records at an icy 0.5°C (32.9°F) during the nights.Humidity
In Rastnik, the average relative humidity in December is 78%.Rainfall
In Rastnik, in December, it is raining for 9.2 days, with typically 37mm (1.46") of accumulated precipitation. Throughout the year, there are 133.4 rainfall days, and 458mm (18.03") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. December is the month with the most snowfall. Snow falls for 3.1 days and accumulates 81mm (3.19") of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 07:25 and sunset at 16:50. On the last day of the month, sunrise is at 07:44 and sunset at 16:59 EET.
Sunshine
The average sunshine in December is 5.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December?
How many days does it rain in December?
What is the snowiest month in Rastnik?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rastnik have in December?
When is the sunrise / sunset in December in Rastnik?
How many hours of sunshine does Rastnik have in December?
When is the lowest UV index in Rastnik?
What is the UV index reading in December?
Average temperature in December
Rastnik, Bulgaria
- Average high temperature in December: 7.3°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (5.1°C).
- Average low temperature in December: 0.5°C
The month with the highest average low temperature is August (16.4°C).
The coldest month (with the lowest average low temperature) is January (-1.8°C).
Average pressure in December
Rastnik, Bulgaria
- Average pressure in December: 1019.9mbar
The month with the highest atmospheric pressure is December (1019.9mbar).
The month with the lowest atmospheric pressure is July (1012.5mbar).
Average wind speed in December
Rastnik, Bulgaria
- Average wind speed in December: 8.6km/h
The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is October (7.6km/h).
Average humidity in December
Rastnik, Bulgaria
- Average humidity in December: 78%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (52%).
Average rainfall in December
Rastnik, Bulgaria
- Average rainfall in December: 37mm
The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days in December
Rastnik, Bulgaria
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is June (18.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Rastnik, Bulgaria
- Average snowfall in December: 81mm
The month with the highest snowfall is December (81mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Rastnik, Bulgaria
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is January (5.4 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
Rastnik, Bulgaria
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Rastnik, Bulgaria
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is August (20.6 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in December
Rastnik, Bulgaria
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Rastnik, Bulgaria
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Rastnik, Bulgaria
- Average visibility in December: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).
