Plizio Visual Lab
Ha Long Bay

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Water temperature…
Ha Long Bay in northern Vietnam is one of the world's most spectacular natural landscapes and has been a UNESCO World Heritage site since 1994. Across an area of approximately 1,500 square kilometers, nearly 2,000 limestone islands and karst formations rise steeply from the emerald waters of the Gulf of Tonkin. Many of these islands house vast cave systems, dense jungles, and hidden lagoons. Legend states that a dragon created the bay by spitting jewels that transformed into islands to ward off invaders. Today, the bay is a major hub for tourism, famous for cruises on traditional junk boats. Beyond its scenic beauty, the region is ecologically significant, hosting numerous rare animal and plant species. Floating fishing villages, where people have lived on the water for generations, provide insight into a traditional way of life. Preserving this fragile ecosystem remains a constant challenge in the face of growing visitor numbers.
- Location: Vietnam
- Top sights: Hạ Long Bay · hòn gà chọi · Dinh Huong Islet
- Nearby: Cat Ba (6 km)
Best time to visit & climate
The most pleasant time to visit is Feb, Mar, Nov.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 16 | 18 | 21 | 24 | 27 | 28 | 28 | 28 | 27 | 25 | 21 | 17 |
| Rain mm | 39 | 25 | 50 | 69 | 168 | 213 | 302 | 338 | 240 | 122 | 51 | 28 |
📋 Practical info
Geography
Facts
- The bay comprises a total of 1,969 limestone islands of various sizes.
- UNESCO declared the bay a World Natural Heritage site in 1994.
- Sung Sot Cave (Surprise Cave) is one of the largest in the region.
- Approximately 1,600 people live permanently in floating fishing villages.
- The limestone formations in the bay are about 500 million years old.
- Ha Long translates to 'Descending Dragon' in English.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Ha Long Bay (7)
Sights nearby
Frequently asked questions
What is the best season?
Do I have to book a cruise?
Are the boats safe?
How long is a tour?
Is seasickness common?
Ha Long Bay: where is it located?
Ha Long Bay: what is there to see?
Ha Long Bay: when is the best time to visit?
Ha Long Bay: why is it worth visiting?
















