May 18 is generally a great time to visit Hoi An. While there is a slight chance of rain (27%), showers are usually brief. Expect comfortable 32°C weather. As it's peak season for Hoi An, we recommend booking your stay well in advance to secure the best rates.
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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 May 18
"Warm & Sunny. Expect average highs of 32.4°C. 27% chance of rain."
What to Wear in Hoi An in May
Based on historical data for May 18, Hoi An typically experiences temperatures between 25.9°C and 32.4°C. We recommend packing t-shirt, light clothing to stay comfortable. With a 27% 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
Average High
32.4°C
Daytime Peak
Average Low
25.9°C
Nighttime Low
Feels Like
45.8°C
🔥 Heat index effect
Rain Chance
27%
Avg 2.2mm if it rains
Cloud Cover
72%
Overcast
Pressure
1007.4 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 92% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 15 min to burn
Type III-IV
🟡 23 min to burn
Type V-VI
🟢 38 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
28.5°C
Humid/Sticky
Heat Index
45.8°C
Feels hotter
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
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 Vietnam
Flight Traffic
High
84/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~127
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Hoi An
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:17
☀️ Noon
11:44
🌇 Sunset
18:11
⏱️ Daylight
12h 53m
Wind Speed
13.2 km/h
Gentle breeze
Sunshine
10.8 hrs
Direct Sun (Cloud-free)
Humidity
80%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Hoi An
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 Hoi An
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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 May 18 averages 32.4°C with a 27% precipitation probability. Wedding/Outdoor Event Score: 91/100."
— 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
Compare Other Cities
Same date (May 18) in other destinations
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📍 Is Hoi An Worth Visiting on May 18?
Planning a trip to Hoi An on May 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 32.4°C with a 27% historical precipitation risk.
✈️ Travel Logistics: Approximately 127 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 28.2°C (tropical bath). Wave conditions are generally fun waves with heights around 0.75m.
📊 Historical Extremes: The hottest May 18 recorded in the last 30 years saw temperatures hit 38.4°C in 2019, while the coldest dropped to 24.4°C in 2022.