September 3 sees frequent showers in Hoi An. Historical data shows a 52% chance of rain, so pack accordingly. Temperatures average 32°C. Hoi An is seeing high visitor numbers, so iconic spots may be busier than usual.
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Essential Travel Info for Hoi An
Currency
VND
₫ Vietnamese đồng
Language
Vietnamese
Driving
Right side
Connect
Most hotels, restaurants and cafés have ...
Safety
High Safety
GPI: 1.786
Hoi An Weather Forecast for September 3
"Rainy & Overcast. Expect average highs of 31.7°C. 52% chance of rain."
What to Wear in Hoi An in September
Based on historical data for September 3, Hoi An typically experiences temperatures between 25.8°C and 31.7°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 52% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Hoi An
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
31.7°C
Daytime Peak
Average Low
25.8°C
Nighttime Low
Feels Like
43.7°C
🔥 Heat index effect
Rain Chance
52%
Avg 5mm if it rains
Cloud Cover
77%
Moderate rain
Pressure
1006.3 hPa
Low volatility
Hoi An Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 81% 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
🔴 30 min to burn
Type III-IV
🟡 45 min to burn
Type V-VI
🟢 75 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
28°C
Humid/Sticky
Heat Index
43.7°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Vietnam
Flight Traffic
Busy
78/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~118
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hoi An
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:35
☀️ Noon
11:47
🌇 Sunset
18:00
⏱️ Daylight
12h 24m
Wind Speed
11.5 km/h
Light breeze
Sunshine
10.1 hrs
Direct Sun (Cloud-free)
Humidity
81%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Hoi An
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Hoi An
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
Rare minor tremors. Buildings are earthquake-resistant.
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, Hoi An on September 3 averages 31.7°C with a 52% precipitation probability. Wedding/Outdoor Event Score: 71/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Hoi An Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
August 27
32.1°C • 48% rain
Score
81
August 28
32°C • 51% rain
Score
80
August 30
31.9°C • 47% rain
Score
74
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 3) in other destinations
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📍 Is Hoi An Worth Visiting on September 3?
Planning a trip to Hoi An on September 3? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 31.7°C with a 52% historical precipitation risk.
✈️ Travel Logistics: Approximately 118 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 10 vaccinations are recommended for Vietnam, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 30.6°C (hot soup). Wave conditions are generally lake-like with heights around 0.49m.
📊 Historical Extremes: The hottest September 3 recorded in the last 30 years saw temperatures hit 34.8°C in 2023, while the coldest dropped to 24.5°C in 2025.