September 18 sees frequent showers in Sapa. Historical data shows a 68% chance of rain, so pack accordingly. Temperatures average 23°C. Sapa is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Sapa
Currency
VND
₫ Vietnamese đồng
Language
Vietnamese
Driving
Right side
Safety
High Safety
GPI: 1.786
Sapa Weather Forecast for September 18
"Rainy & Overcast. Expect average highs of 22.8°C. 68% chance of rain."
What to Wear in Sapa in September
Based on historical data for September 18, Sapa typically experiences temperatures between 17.4°C and 22.8°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 68% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Sapa
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
22.8°C
Daytime Peak
Average Low
17.4°C
Nighttime Low
Feels Like
23.5°C
☀️ Feels accurate
Rain Chance
68%
Avg 6.1mm if it rains
Cloud Cover
78%
Moderate rain
Pressure
1011.9 hPa
Low volatility
Sapa Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 86% 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
🔴 28 min to burn
Type III-IV
🟡 42 min to burn
Type V-VI
🟢 70 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
20.9°C
Humid/Sticky
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
83/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~246
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Sapa
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:53
☀️ Noon
12:00
🌇 Sunset
18:07
⏱️ Daylight
12h 13m
Wind Speed
5.4 km/h
Light breeze
Sunshine
8.7 hrs
Direct Sun (Cloud-free)
Humidity
89%
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
🌧️ Variable
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Mild discomfort possible for arthritic conditions.
Moderate fish activity expected.
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 September 18 averages 22.8°C with a 68% precipitation probability. Wedding/Outdoor Event Score: 68/100."
— 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
September 23
22.2°C • 50% rain
Score
83
September 24
22.1°C • 51% rain
Score
82
September 25
22.1°C • 51% rain
Score
82
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Sapa Worth Visiting on September 18?
Planning a trip to Sapa on September 18? 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 22.8°C with a 68% historical precipitation risk.
✈️ Travel Logistics: Approximately 246 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 September 18 recorded in the last 30 years saw temperatures hit 24.1°C in 2017, while the coldest dropped to 15.9°C in 2022.