December 31 is statistically one of the best days of the year in Sofia. With minimal rain risk (12%) and pleasant highs of 5°C, it's ideal for outdoor adventures. Sofia is currently in its most popular travel window, meaning vibrant crowds and premium pricing. Note: December 31 is Currency change day in Sofia, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Sofia
Currency
BGN
лв Bulgarian lev
Language
Bulgarian
Driving
Right side
Connect
5G internet is available from all three ...
Safety
High Safety
GPI: 1.541
Sofia Weather Forecast for December 31
"Mild & Comfortable. Expect average highs of 5°C. 12% chance of snow."
What to Wear in Sofia in December
Based on historical data for December 31, Sofia typically experiences temperatures between -2.8°C and 5°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (12% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Sofia
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
5°C
Daytime Peak
Average Low
-2.8°C
Nighttime Low
Feels Like
2.9°C
❄️ Slightly colder
Snow Chance
12%
Avg 0.6mm if it snows
Snowfall
0.7 cm
~12% chance
Pressure
1021.5 hPa
High volatility
Sofia Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
1.5°C
Dry air
Heat Stress
Low
No heat warning
😕 Best outdoor time:
Midday (11 AM - 3 PM) when warmest
Travel & Logistics Insights
Local Calendar
Holiday
Currency change day
Flight Traffic
High
91/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~86
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Sofia
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:58
☀️ Noon
12:30
🌇 Sunset
17:03
⏱️ Daylight
9h 5m
Wind Speed
8.9 km/h
Light breeze
Sunshine
6.1 hrs
Direct Sun (Cloud-free)
Humidity
78%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Sofia
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Sofia
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Sofia on December 31 averages 5°C with a 12% precipitation probability. Wedding/Outdoor Event Score: 46/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Sofia Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 31) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Sofia Worth Visiting on December 31?
Planning a trip to Sofia on December 31? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 5°C with a 12% historical precipitation risk.
🎉 Local Event: The date coincides with Currency change day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 86 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Bulgaria, including COVID-19.
📊 Historical Extremes: The hottest December 31 recorded in the last 30 years saw temperatures hit 11.3°C in 2020, while the coldest dropped to -9.5°C in 2015.