Bulgaria Sofia Weather in December — Climate Guide
December in Sofia is moderate
December is moderate for Sofia.
December is Sofia's Christmas-market month — the Vitosha Boulevard Christmas market (mid-December through January 7) is the canonical atmospheric Sofia evening experience. Mt. Vitosha Aleko ski season opens mid-December (the only EU-capital ski mountain 30 min from downtown). Cold (4°C high, -2°C low) + short daylight (9h) + indoor culture season + Christmas decorations across central Sofia. New Year's Eve fireworks at Sofia central squares are the canonical Bulgarian capital New Year. Hotels add 15-25% for Christmas weeks + 30-40% for New Year's Eve.
Travel score
Christmas market + Mt. Vitosha ski opens + Orthodox January 7
December Weather at a Glance
December averages 39°F / 4°C highs and 28°F / -2°C lows with 40mm precipitation over 9 wet/snow days. Humidity 80%. Sunshine 2h daily — year's least. Daylight shortest at 9h average. Wind chill -6°C on cold-snap days. Snow accumulation 10-25cm in central Sofia, 100-200cm on Mt. Vitosha. UV index 1 — minimal. Air quality moderate-to-poor (winter wood-burning).
December Travel Advice
December is Sofia's Christmas atmospheric month — Vitosha Boulevard Christmas market mid-December through January 7 is the canonical atmospheric evening. Mt. Vitosha Aleko ski opens mid-December — the only EU-capital ski mountain 30 min from downtown. Pre-book Christmas-week hotels 6-8 weeks ahead (15-25% premium); New Year's Eve hotels 10-12 weeks ahead (30-40% premium). Pack proper winter clothing + waterproof boots. Plan major outdoor walks for 10:00-15:00 daylight window.
December Pricing Trends
Christmas + New Year pricing climbs: Sense Hotel Sofia $130-230/night (Christmas weeks), $200-380 (New Year's Eve), mid-range 4-star $75-140 + $130-220 (NYE). Flights from EU $130-300. December early-month before Christmas markets retains November low-season pricing.
Sofia December Weather Stats
Avg High
4°C
Avg Low
-2°C
Rainy Days
9
40mm total
Sunshine
2h
Daily avg
Humidity
80%
humid
UV Index
1
Low
Wind
12 km/h
Gusts 30
Sea Temp
4°C
no swimming
Crowds
Moderate
At attractions
December Sunrise & Sunset
Air Quality
PM2.5
36 μg/m³
PM10
60 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
2°C
Nighttime
-6°C
Humidity and wind affect how the actual temperature feels.
Wind
12 km/h
Max gust 30 km/h
Activities Recommended for December
December Travel Pros & Cons
Pros
- Vitosha Boulevard Christmas market — atmospheric canonical Sofia evening experience
- Mt. Vitosha Aleko ski season opens mid-December (only EU-capital ski 30 min downtown)
- Indoor culture + Bulgarian wine cellar + fine-dining season
- Orthodox Christmas January 7 — distinctive Bulgarian religious calendar
- Snow-covered Alexander Nevsky + Vitosha Boulevard visually striking
Cons
- Cold afternoons (-2°C lows with -6°C wind chill)
- Short daylight (9h — sunrise 07:50, sunset 16:55)
- Snow + ice on Sofia cobblestones (twisted-ankle risk)
- Christmas + New Year hotel pricing climbs 15-40%
- Boyana Church + outdoor walks chilly
December Events & Festivals
- Vitosha Boulevard Christmas market mid-December through January 7 (atmospheric Sofia evening canonical)
- Mt. Vitosha Aleko ski season opens mid-December
- Western Christmas December 25 + Orthodox Christmas January 7
- New Year's Eve fireworks Sofia central squares (December 31)
- Christmas season hotel pricing
Sofia in December — Full Picture
December is Sofia's Christmas-market month — the Vitosha Boulevard Christmas market (mid-December through January 7) is the canonical atmospheric Sofia evening experience. Mt. Vitosha Aleko ski season opens mid-December (the only EU-capital ski mountain 30 min from downtown). Cold (4°C high, -2°C low) + short daylight (9h) + indoor culture season + Christmas decorations across central Sofia. New Year's Eve fireworks at Sofia central squares are the canonical Bulgarian capital New Year. Hotels add 15-25% for Christmas weeks + 30-40% for New Year's Eve.
What to Wear & What to Pack
Full winter dress code. Warm jacket (-8°C rated) + thermal Merino base + fleece mid + scarf + gloves + warm hat + waterproof boots. Snow regular December through March. Hand warmers helpful for Christmas market evenings + Mt. Vitosha ski days. Indoor cafés very hot — removable layers.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
16°C
5.3°C
10/mo
Summer (Jun·Jul·Aug)
27°C
14.3°C
9.3/mo
Autumn (Sep·Oct·Nov)
16.7°C
6.3°C
8.7/mo
Winter (Dec·Jan·Feb)
Current4.3°C
-3°C
8.7/mo
Sofia Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 3° | -4° | 9d·35mm | 2h | 80% | 1 | Quiet | Low season | |
| 6° | -3° | 8d·30mm | 3h | 78% | 2 | Quiet | Low season | |
| 11° | 1° | 9d·45mm | 4h | 73% | 3 | Quiet | Shoulder | |
| 16° | 5° | 10d·60mm | 5h | 70% | 4 | Moderate | Shoulder | |
| 21° | 10° | 11d·75mm | 6h | 70% | 5 | Moderate | Shoulder | |
| June (Best) | 25° | 13° | 11d·80mm | 8h | 68% | 7 | Busy | Peak |
| July (Best) | 28° | 15° | 9d·65mm | 10h | 65% | 8 | Busy | Peak |
| August (Best) | 28° | 15° | 8d·55mm | 10h | 65% | 8 | Busy | Peak |
| September (Best) | 23° | 11° | 7d·50mm | 7h | 67% | 6 | Moderate | Shoulder |
| 17° | 6° | 9d·60mm | 5h | 73% | 4 | Moderate | Shoulder | |
| 10° | 2° | 10d·50mm | 3h | 78% | 2 | Quiet | Low season | |
| 4° | -2° | 9d·40mm | 2h | 80% | 1 | Moderate | Shoulder |
View Other Months
Sofia December Hotel Picks
Frequently Asked Questions
Is December a good time to visit Sofia?
Sofia in December is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Sofia in December?
Sofia December averages a high of 4°C and a low of -2°C.
Does it rain much in Sofia in December?
Sofia December averages 40mm of rainfall over about 9 rainy days.
What should I wear in Sofia in December?
Full winter dress code. Warm jacket (-8°C rated) + thermal Merino base + fleece mid + scarf + gloves + warm hat + waterproof boots. Snow regular December through March. Hand warmers helpful for Christmas market evenings + Mt. Vitosha ski days. Indoor cafés very hot — removable layers.
What time are sunrise and sunset in Sofia in December?
Sofia December sunrise is 07:50 and sunset is 16:55, with 9h 5min of daylight.
What's the air quality like in Sofia in December?
Sofia December air quality (AQI) averages 90, rated Moderate. PM2.5 averages 36μg/m³.
What activities are recommended in Sofia in December?
In December, Sofia is great for Vitosha Boulevard Christmas market evenings, Mt. Vitosha Aleko skiing (only EU-capital ski 30 min downtown), Alexander Nevsky + Saint Sofia + Serdika Roman + Boyana Church indoor circuit.
Is December peak season in Sofia?
Sofia December crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Sofia
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.