December 20 is statistically one of the best days of the year in Hong Kong. With minimal rain risk (8%) and pleasant highs of 19°C, it's ideal for outdoor adventures. As it's peak season for Hong Kong, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Hong Kong
Currency
HKD
$ Hong Kong dollar
Language
English
+1 more
Driving
Left side
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Hong Kong Weather Forecast for December 20
"Mild & Comfortable. Expect average highs of 19.1°C. 8% chance of rain."
What to Wear in Hong Kong in December
Based on historical data for December 20, Hong Kong typically experiences temperatures between 13.2°C and 19.1°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (8% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Hong Kong
Smart Suitcase
- Light Jacket
- Long Pants
Average High
19.1°C
Daytime Peak
Average Low
13.2°C
Nighttime Low
Feels Like
19.1°C
🌤️ Feels accurate
Rain Chance
8%
Avg 0.3mm if it rains
Cloud Cover
45%
Overcast
Pressure
1020.9 hPa
Medium volatility
Hong Kong Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 94% 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
12.4°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Hong Kong
Flight Traffic
High
98/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~1,115
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hong Kong
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:58
☀️ Noon
12:21
🌇 Sunset
17:44
⏱️ Daylight
10h 46m
Wind Speed
18 km/h
Gentle breeze
Sunshine
7.6 hrs
Direct Sun (Cloud-free)
Humidity
65%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Hong Kong
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 Hong Kong
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.
Unhealthy. Everyone should reduce outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
Typhoon Risk
Year-round risk present
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, Hong Kong on December 20 averages 19.1°C with a 8% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Hong Kong Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (December 20) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Hong Kong Worth Visiting on December 20?
Planning a trip to Hong Kong on December 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 19.1°C with a 8% historical precipitation risk.
✈️ Travel Logistics: Approximately 1,115 landing slots available daily during this period, indicating peak tourist activity.
🌊 Coastal Conditions: Water temperature averages 20.2°C (refreshing tonic). Wave conditions are generally fun waves with heights around 0.97m.
📊 Historical Extremes: The hottest December 20 recorded in the last 30 years saw temperatures hit 23.1°C in 2018, while the coldest dropped to 7.7°C in 2023.