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Qiongzhou Strait

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The Qiongzhou Strait, also known as the Hainan Strait, is a strategic body of water separating the Leizhou Peninsula of Guangdong from Hainan Island. Measuring approximately 80 kilometers in length and an average of 30 kilometers in width, it connects the Gulf of Tonkin to the South China Sea. The strait was formed by tectonic subsidence and volcanic activity during the Quaternary period, evidenced by the volcanic terrain found along its northern and southern coasts. Water depth in the channel ranges from 40 to 120 meters, with strong tidal currents and frequent seasonal typhoons complicating maritime traffic. Historically a major obstacle for trade, the strait is now bridged by the world's first high-speed rail ferry system, linking Hainan's rail network to the mainland. Plans for a fixed link, such as a bridge or tunnel, have been studied for decades but remain challenging due to the region's high seismic activity and complex deep-water conditions.
- Location: China
- Nearby: Haikou (8 km)
Best time to visit & climate
The most pleasant time to visit is Feb, Mar, Dec.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 19 | 20 | 23 | 26 | 28 | 29 | 29 | 28 | 28 | 26 | 23 | 20 |
| Rain mm | 30 | 23 | 42 | 77 | 171 | 197 | 253 | 324 | 276 | 269 | 75 | 44 |
📋 Practical info
Geography
Facts
- The strait is approximately 80 kilometers long.
- The maximum water depth reaches about 120 meters.
- It connects the Gulf of Tonkin with the South China Sea.
- The world's first high-speed railway ferry operates here.
- Tidal currents in the strait can exceed 3 meters per second.
- The strait accounts for 90% of all supplies reaching Hainan Island.
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 nearby
Frequently asked questions
Where is the Qiongzhou Strait located?
How do you cross the strait?
Is the passage difficult for ships?
How wide is the Qiongzhou Strait?
What can you see on the coast?
Qiongzhou Strait: where is it located?
Qiongzhou Strait: when is the best time to visit?
Qiongzhou Strait: why is it worth visiting?

























