December weather forecastKosti, Bulgaria
December
Weather in December
December, the first month of the winter in Kosti, is still a chilly month, with an average temperature ranging between max 8.8°C (47.8°F) and min 4.5°C (40.1°F).Temperature
Kosti in December undergoes a mild reduction in the average high-temperature, shifting from November's mild 13.9°C (57°F) to a frosty 8.8°C (47.8°F). Kosti's nighttime average temperature in December drops marginally from the daytime highs, settling at a cold 4.5°C (40.1°F).Humidity
The average relative humidity in December in Kosti is 78%.Rainfall
In Kosti, in December, it is raining for 12.4 days, with typically 50mm (1.97") of accumulated precipitation. In Kosti, Bulgaria, during the entire year, the rain falls for 143.6 days and collects up to 486mm (19.13") of precipitation.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 2 days. Throughout December, 13mm (0.51") of snow is accumulated. Throughout the year, in Kosti, there are 11.7 snowfall days, and 90mm (3.54") of snow is accumulated.Daylight
December has the shortest days of the year in Kosti, with an average of 9h and 12min of daylight.On the first day of December in Kosti, sunrise is at 07:17 and sunset at 16:38. On the last day of the month, sunrise is at 07:36 and sunset at 16:47 EET.
Sunshine
The average sunshine in December in Kosti is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. To protect against the Sun's most potent rays, avoid direct exposure around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Kosti, Bulgaria
- Average high temperature in December: 8.8°C
The warmest month (with the highest average high temperature) is August (26.7°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in December: 4.5°C
The month with the highest average low temperature is August (20°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in December
Kosti, Bulgaria
- Average pressure in December: 1019.8mbar
The month with the highest atmospheric pressure is December (1019.8mbar).
The month with the lowest atmospheric pressure is July (1012.3mbar).
Average wind speed in December
Kosti, Bulgaria
- Average wind speed in December: 17.4km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is June (11.4km/h).
Average humidity in December
Kosti, Bulgaria
- Average humidity in December: 78%
The months with the highest relative humidity are January and February (81%).
The months with the lowest relative humidity are August and September (70%).
Average rainfall in December
Kosti, Bulgaria
- Average rainfall in December: 50mm
The wettest month (with the highest rainfall) is October (55mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in December
Kosti, Bulgaria
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is August (6.5 days).
Average snowfall in December
Kosti, Bulgaria
- Average snowfall in December: 13mm
The month with the highest snowfall is January (39mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Kosti, Bulgaria
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Kosti, Bulgaria
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 4h and 24min).
Average sunshine days in December
Kosti, Bulgaria
- Average sunshine days in December: 15 days
The month with the most sunshine days is August (21.1 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in December
Kosti, 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 and December (UV index 2).
Average cloud cover in December
Kosti, Bulgaria
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Kosti, Bulgaria
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).





