December 20 is generally a great time to visit Reykjavik. While there is a slight chance of rain (39%), showers are usually brief. Expect comfortable 2°C weather. Moderate travel demand makes this an excellent time for a balanced Reykjavik experience.
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Essential Travel Info for Reykjavik
Currency
ISK
kr Icelandic króna
Language
Icelandic
Driving
Right side
Safety
Very High Safety
GPI: 1.107
Reykjavik Weather Forecast for December 20
"Cold & Crisp. Expect average highs of 1.6°C. 39% chance of snow."
What to Wear in Reykjavik in December
Based on historical data for December 20, Reykjavik typically experiences temperatures between -2.8°C and 1.6°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. With a 39% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Reykjavik
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
- Umbrella
Average High
1.6°C
Daytime Peak
Average Low
-2.8°C
Nighttime Low
Feels Like
-4°C
🥶 Wind chill effect
Snow Chance
39%
Avg 2.6mm if it snows
Snowfall
0.8 cm
~39% chance
Pressure
1001.5 hPa
High volatility
Reykjavik Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 90% 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
-1.1°C
Dry air
Heat Stress
Low
No heat warning
😣 Best outdoor time:
Midday (11 AM - 3 PM) when warmest
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Iceland
Flight Traffic
Moderate
52/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~57
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Reykjavik
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
11:22
☀️ Noon
13:26
🌇 Sunset
15:30
⏱️ Daylight
4h 7m
Wind Speed
26 km/h
Moderate wind
Sunshine
0.7 hrs
Direct Sun (Cloud-free)
Humidity
82%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Reykjavik
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Reykjavik
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Low pressure & humidity may aggravate joints.
Fish are active due to pressure changes.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Active seismic zone. Multiple earthquakes per year.
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Reykjavik on December 20 averages 1.6°C with a 39% precipitation probability. Wedding/Outdoor Event Score: 10/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Reykjavik Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (December 20) in other destinations
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📍 Is Reykjavik Worth Visiting on December 20?
Planning a trip to Reykjavik on December 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 1.6°C with a 39% historical precipitation risk.
✈️ Travel Logistics: Approximately 57 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Iceland, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 3.5°C (polar plunge). Wave conditions are generally surfers only with heights around 1.72m.
📊 Historical Extremes: The hottest December 20 recorded in the last 30 years saw temperatures hit 6°C in 2021, while the coldest dropped to -5.1°C in 2022.