November 21 is statistically one of the best days of the year in Hong Kong. With minimal rain risk (14%) and pleasant highs of 23°C, it's ideal for outdoor adventures. You'll find plenty of company in Hong Kong this month as tourism activity remains quite robust.
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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 November 21
"Mild & Comfortable. Expect average highs of 23.4°C. 14% chance of rain."
What to Wear in Hong Kong in November
Based on historical data for November 21, Hong Kong typically experiences temperatures between 18.1°C and 23.4°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (14% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Hong Kong
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
23.4°C
Daytime Peak
Average Low
18.1°C
Nighttime Low
Feels Like
23.9°C
☀️ Feels accurate
Rain Chance
14%
Avg 0.5mm if it rains
Cloud Cover
45%
Overcast
Pressure
1017.8 hPa
Low 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 87% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 160 min to burn
Type III-IV
🟡 240 min to burn
Type V-VI
🟢 400 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
18.1°C
Noticeable
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
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Hong Kong
Flight Traffic
Busy
68/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~779
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hong Kong
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:40
☀️ Noon
12:10
🌇 Sunset
17:40
⏱️ Daylight
10h 59m
Wind Speed
15.9 km/h
Gentle breeze
Sunshine
7.8 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Hong Kong
Smart Flight Estimator
Airport-to-Airport Logistics
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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
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
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 November 21 averages 23.4°C with a 14% 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 (November 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Hong Kong Worth Visiting on November 21?
Planning a trip to Hong Kong on November 21? 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 23.4°C with a 14% historical precipitation risk.
✈️ Travel Logistics: Approximately 779 landing slots available daily during this period, indicating peak tourist activity.
🌊 Coastal Conditions: Water temperature averages 23.5°C (swimming pool). Wave conditions are generally fun waves with heights around 0.86m.
📊 Historical Extremes: The hottest November 21 recorded in the last 30 years saw temperatures hit 26.2°C in 2018, while the coldest dropped to 14.4°C in 2025.