site.btaThe Weather on December 13

Cloud cover will be patchy, medium and high, without precipitation. Fog or low clouds in the lowlands in the morning. Moderate southwesterly wind in most areas, temporarily strong in places north of the mountains, bringing warm air.  Lows: minus 1C to 4C, around 1C in Sofia. Quiet and foggy conditions to remain along the western Danube and in the western part of the Upper Thracian valley, where temperatures will remain low. In the rest of the country, highs: between 9C and 14C, in Sofia around 12C.  

The Black Sea coast: Considerable cloud, no precipitation. Moderate southerly wind. Highs: 9C-12C. Seawater temperature: 9C-11C. Sea waves: 2-3 degrees Douglas. 

The mountains: Medium and high mostly patchy cloud cover. Moderate to strong west-southwesterly wind. Highs: at 1,200 metres around 12C, at 2,000 metres around 4C. 

Source: National Institute of Meteorology and Hydrology