December 21 is statistically one of the best days of the year in Yerevan. With minimal rain risk (11%) and pleasant highs of 4°C, it's ideal for outdoor adventures. It's a lively time to explore Yerevan, with most attractions operating at full capacity.
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Essential Travel Info for Yerevan
Currency
AMD
֏ Armenian dram
Language
Armenian
Driving
Right side
Safety
High Safety
GPI: 1.992
Yerevan Weather Forecast for December 21
"Cold & Crisp. Expect average highs of 4.3°C. 11% chance of snow."
What to Wear in Yerevan in December
Based on historical data for December 21, Yerevan typically experiences temperatures between -4.5°C and 4.3°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (11% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Yerevan
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
4.3°C
Daytime Peak
Average Low
-4.5°C
Nighttime Low
Feels Like
2.7°C
❄️ Minor difference
Snow Chance
11%
Avg 0.4mm if it snows
Snowfall
0.5 cm
~11% chance
Pressure
1023.5 hPa
Medium volatility
Yerevan Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 75% of the time. Safe to plan outdoor activities with confidence.
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
Business Day
Standard hours in Armenia
Flight Traffic
Busy
68/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~54
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Yerevan
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
08:21
☀️ Noon
13:01
🌇 Sunset
17:40
⏱️ Daylight
9h 18m
Wind Speed
6.6 km/h
Light breeze
Sunshine
7.1 hrs
Direct Sun (Cloud-free)
Humidity
66%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Yerevan
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Yerevan
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
High pressure may reduce activity.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Yerevan on December 21 averages 4.3°C with a 11% precipitation probability. Wedding/Outdoor Event Score: 40/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Yerevan Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
December 14
5.2°C • 8% rain
Score
47
December 15
5°C • 9% rain
Score
45
December 16
4.9°C • 8% rain
Score
44
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Yerevan Worth Visiting on December 21?
Planning a trip to Yerevan on December 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 4.3°C with a 11% historical precipitation risk.
✈️ Travel Logistics: Approximately 54 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Armenia, including COVID-19.
📊 Historical Extremes: The hottest December 21 recorded in the last 30 years saw temperatures hit 9.3°C in 2017, while the coldest dropped to -18.7°C in 2016.