December 21 is generally a great time to visit Sapa. While there is a slight chance of rain (17%), showers are usually brief. Expect comfortable 14°C weather. Expect a bustling atmosphere in Sapa right now—this is when the city truly comes alive with visitors.
View the full calendar
Essential Travel Info for Sapa
Currency
VND
₫ Vietnamese đồng
Language
Vietnamese
Driving
Right side
Safety
High Safety
GPI: 1.786
Sapa Weather Forecast for December 21
"Mild & Comfortable. Expect average highs of 13.8°C. 17% chance of rain."
What to Wear in Sapa in December
Based on historical data for December 21, Sapa typically experiences temperatures between 7.3°C and 13.8°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (17% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Sapa
Smart Suitcase
- Light Jacket
- Long Pants
Average High
13.8°C
Daytime Peak
Average Low
7.3°C
Nighttime Low
Feels Like
13.7°C
🌤️ Feels accurate
Rain Chance
17%
Avg 0.6mm if it rains
Cloud Cover
56%
Light drizzle
Pressure
1020.4 hPa
Medium volatility
Sapa 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
11.5°C
Pleasant
Heat Stress
Low
No heat warning
😐 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Vietnam
Flight Traffic
High
90/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~265
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Sapa
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:40
☀️ Noon
12:03
🌇 Sunset
17:26
⏱️ Daylight
10h 45m
Wind Speed
5.5 km/h
Light breeze
Sunshine
7.1 hrs
Direct Sun (Cloud-free)
Humidity
86%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Sapa
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 Sapa
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 for sensitive groups. Consider wearing a mask outdoors.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Sapa on December 21 averages 13.8°C with a 17% precipitation probability. Wedding/Outdoor Event Score: 90/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Sapa Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
December 15
15°C • 16% rain
Score
97
December 23
14.1°C • 15% rain
Score
97
December 16
14.7°C • 15% rain
Score
96
💡 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 Sapa Worth Visiting on December 21?
Planning a trip to Sapa 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 13.8°C with a 17% historical precipitation risk.
✈️ Travel Logistics: Approximately 265 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 10 vaccinations are recommended for Vietnam, including COVID-19.
📊 Historical Extremes: The hottest December 21 recorded in the last 30 years saw temperatures hit 19.4°C in 2016, while the coldest dropped to 2.8°C in 2017.