The month in detail
What to expect in April
Spring marks the start of the good season in Halong Bay. Temperatures rise (26°C) and tourists have not yet arrived en masse. Rain risk remains low (22% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if October (8.6/10) remains theoretically better.
April ranks 3 out of 12 months in Halong Bay. Compared to March: +2°C daytime, 5 pts more rainy days, +1.4h of sun per day.
This month's conditions
What it's like in April
UV index
7 · high
sunscreen and hat advised
Feels like
muggy at times
21°
Sea
25°C
pleasant for swimming
Daylight
12.5h of daylight
Air quality
fair
AQI 55
Compare
Is April the right month?
The best month in Halong Bay is October (8.6/10), 0.3 pt higher than April.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Halong Bay
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Halong Bay
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.
Country · Vietnam
🗣️LanguageVietnamese
💶CurrencyVietnamese Dong (₫)
🚗DrivingRight-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘVery cheap · 1/5
🌡️ Climate
🌍Climate typeTropical
📈Climate trend ⓘStable
🔥Hottest monthJune · 31°C
❄️Coolest monthJanuary · 20°C
🌧️Rainiest month ⓘAugust · 62%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore
Other destinations in April
If April doesn't convince you for this destination, compare with others.
Location
Where is Halong Bay ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
VietnamTropical climate with a 8.6 → 4.6 gap between best and worst month. 10 years of ERA5 data to choose by project.
20.91°N · 107.18°E
Questions
Frequently asked questions
What is the best time to visit Halong Bay?
November is the best month with 26.0°C highs, 20.0°C lows, 7.0h of sunshine and 14.0% rainy days. The months of November & October offer comparable conditions.
How many hours of sunshine does Halong Bay get in November?
Halong Bay averages 7.0 sunshine hours per day in November. It is the sunniest month with a climate score of 8.1/10.
What is the rainiest month in Halong Bay?
August is the most unfavourable month with August has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Halong Bay in November?
In November, overnight lows reach 20.0°C, while afternoon highs average 26.0°C.
Is Halong Bay good in winter?
In winter (December-February), Halong Bay scores 7.4/10 on average — Decent period conditions for cultural visits.. The best month overall remains November with a score of 8.1/10.
When should you avoid Halong Bay?
August is the most difficult month to visit Halong Bay, with August has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Halong Bay in April?
In April, the sea averages 25°C in Halong Bay: pleasant for swimming. Swimming is pleasant without a wetsuit.
Do you need sun protection in Halong Bay in April?
The average UV index reaches 7 in April in Halong Bay (high), with about 12.5h of daylight. Sunscreen and hat advised.