Historical data suggests significant rain risk (87%) on September 5. If you seek sun, consider a different date. Bring rain gear! It's a lively time to explore Vientiane, with most attractions operating at full capacity.
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Essential Travel Info for Vientiane
Currency
LAK
₭ Lao kip
Language
Lao
Driving
Right side
Connect
Most hotels, restaurants, cafes, bars et...
Safety
High Safety
GPI: 1.809
Vientiane Weather Forecast for September 5
"Rainy & Overcast. Expect average highs of 30°C. 87% chance of rain."
What to Wear in Vientiane in September
Based on historical data for September 5, Vientiane typically experiences temperatures between 24°C and 30°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 87% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Vientiane
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
30°C
Daytime Peak
Average Low
24°C
Nighttime Low
Feels Like
39.8°C
🔥 Heat index effect
Rain Chance
87%
Avg 11.7mm if it rains
Cloud Cover
87%
Moderate rain
Pressure
1007 hPa
Low volatility
Vientiane Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 96% 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
🔴 35 min to burn
Type III-IV
🟡 53 min to burn
Type V-VI
🟢 88 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
27.6°C
Humid/Sticky
Heat Index
39.8°C
Feels hotter
😕 Best outdoor time:
Morning hours (before 11 AM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Laos
Flight Traffic
Busy
70/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~38
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Vientiane
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:57
☀️ Noon
12:09
🌇 Sunset
18:22
⏱️ Daylight
12h 25m
Wind Speed
8.2 km/h
Light breeze
Sunshine
8.0 hrs
Direct Sun (Cloud-free)
Humidity
87%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Vientiane
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 Vientiane
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.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Vientiane on September 5 averages 30°C with a 87% precipitation probability. Wedding/Outdoor Event Score: 38/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Vientiane Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 12
29.7°C • 79% rain
Score
47
September 11
29.6°C • 80% rain
Score
46
September 9
29.8°C • 81% rain
Score
45
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 5) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Vientiane Worth Visiting on September 5?
Planning a trip to Vientiane on September 5? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 30°C with a 87% historical precipitation risk.
✈️ Travel Logistics: Approximately 38 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 10 vaccinations are recommended for Laos, including COVID-19.
📊 Historical Extremes: The hottest September 5 recorded in the last 30 years saw temperatures hit 32°C in 2020, while the coldest dropped to 22.9°C in 2018.