Temperature Forecast: The lowest temperatures in January will be between minus 18 and minus 13 degrees Celsius. Higher temperatures are expected along the Black Sea coast, and the highest - between 10 and 15 degrees Celsius, in places in the Pre-Balkan - up to 18 degrees Celsius.
Average Monthly Temperature: Expected around the norm. In Northern Bulgaria and the high fields - between minus 2 and 1 degrees Celsius; along the Black Sea coast, in the Upper Thracian lowland and the valley of the Struma River - from 0 to 4 degrees Celsius; in the mountainous regions - between minus 10 and minus 3 degrees Celsius.
Precipitation: The monthly sum of precipitation will be around the norm, between 30 and 70 liters per square meter.
Changes during the month: The month will start with cold weather, but after January 2nd it will warm up. Significant precipitation is expected between January 6th and 10th. During the second and third ten-day periods, the weather will be dynamic, with snowfall in Northern and Western Bulgaria and rain in Southern Bulgaria and along the Black Sea coast.
Characteristic features: January is the coldest and snowiest month, usually defining the character of winter. Invasions of Arctic air, Mediterranean cyclones, and heavy snowfalls are possible. The average number of days with snow cover is greatest in Northwestern Bulgaria.
Astronomical reference: At the beginning of January, the sun rises at 7:57 AM and sets at 5:04 PM (daylight duration - 9:07). At the end of January: sunrise at 7:42 AM, sunset at 5:38 PM (daylight duration - 9:56). Moon phases: full moon on January 3rd, last quarter on January 10th, new moon on January 18th, first quarter on January 26th.