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December in Sozopol averages 10°C (50°F) during the day and 5°C (41°F) at night. Quite a bit of rainfall is typical this month, with around 78 mm (3.1 in) on average. An umbrella is a good idea.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Sozopol.
Pick a month to see the average temperature, rainfall and sunshine in Sozopol - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Sozopol typically stay consistent throughout December, with daily highs averaging around 10°C (50°F). Nights are cold, with lows typically ranging from 0°C (32°F) to 4°C (39°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Sozopol spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Sozopol spans 1997 to 2025, revealing these weather extremes.
Find out more about the weather in Bulgaria and which places have the best travel conditions in this month. See all of Bulgaria in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Dress warmly and in layers for your trip to Sozopol in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days. The water temperature sits at about 11°C (52°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Sozopol climate overview or explore weather in Bulgaria.
Where to go in December - average daytime high across popular destinations.
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