May 2 sees frequent showers in Halong Bay. Historical data shows a 40% chance of rain, so pack accordingly. Temperatures average 28°C. As it's peak season for Halong Bay, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Halong Bay
Currency
VND
₫ Vietnamese đồng
Language
Vietnamese
Driving
Right side
Safety
High Safety
GPI: 1.786
Halong Bay Weather Forecast for May 2
"Warm & Sunny. Expect average highs of 28.1°C. 40% chance of rain."
What to Wear in Halong Bay in May
Based on historical data for May 2, Halong Bay typically experiences temperatures between 23.5°C and 28.1°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 40% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Halong Bay
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
28.1°C
Daytime Peak
Average Low
23.5°C
Nighttime Low
Feels Like
33.2°C
🔥 Heat index effect
Rain Chance
40%
Avg 2.7mm if it rains
Cloud Cover
67%
Overcast
Pressure
1009.2 hPa
Low volatility
Halong Bay Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 100% 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
🔴 14 min to burn
Type III-IV
🟡 21 min to burn
Type V-VI
🟢 35 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
25.3°C
Humid/Sticky
Heat Index
33.2°C
Feels hotter
😐 Best outdoor time:
Morning hours (before 11 AM)
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
80/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~20
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Halong Bay
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:21
☀️ Noon
11:49
🌇 Sunset
18:17
⏱️ Daylight
12h 55m
Wind Speed
16.6 km/h
Gentle breeze
Sunshine
9.4 hrs
Direct Sun (Cloud-free)
Humidity
85%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Halong Bay
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 Halong Bay
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.
Unhealthy for sensitive groups. Consider wearing a mask outdoors.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
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, Halong Bay on May 2 averages 28.1°C with a 40% precipitation probability. Wedding/Outdoor Event Score: 84/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Halong Bay Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
April 25
27.5°C • 29% rain
Score
90
April 28
27.7°C • 31% rain
Score
89
April 29
27.8°C • 31% rain
Score
89
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
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📍 Is Halong Bay Worth Visiting on May 2?
Planning a trip to Halong Bay on May 2? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 28.1°C with a 40% historical precipitation risk.
✈️ Travel Logistics: Approximately 20 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 28.1°C (tropical bath). Wave conditions are generally lake-like with heights around 0.49m.
📊 Historical Extremes: The hottest May 2 recorded in the last 30 years saw temperatures hit 30.2°C in 2016, while the coldest dropped to 19.2°C in 2022.