Weizhou Island Island

Volcanic island in Gulf of Tonkin with beaches

Off Guangxi's coast, Weizhou Island is a volcanic islet known for basalt formations, black-sand coves and seafood; visitors come for beaches, boat trips and coastal geology.

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Weizhou Island at a Glance#

About Weizhou Island#

Weizhou Island is a volcanic island in the Beibu Gulf (Gulf of Tonkin) off the coast of Beihai in Guangxi Zhuang Autonomous Region, China. It is the largest island in Guangxi and is notable for its volcanic geology and coastal landforms.

The island features basalt cliffs, volcanic cones and sandy beaches, and supports fishing villages and tourism facilities concentrated around coastal settlements. Visitors go for coastal scenery, seafood and to see volcanic features along the shoreline.

Formed by volcanic activity, Weizhou has a recorded history of settlement and maritime activity and today is administered as part of Beihai city. The island’s volcanic origins are responsible for its distinctive rock formations and black basalt outcrops.

Weizhou Island sits in the northern South China Sea (Beibu Gulf), under the jurisdiction of Beihai city in Guangxi, and is reached by ferry services from the Beihai mainland.

  • Ferry access: Ferries run regularly from Beihai on the mainland; travel times vary by vessel and sea conditions.

How to Get to Weizhou Island#

Weizhou Island (Weizhou Dao) is served by ferries from Beihai on the Guangxi coast. From Beihai city take a local bus or taxi to the Beihai ferry terminal (the port serving Weizhou Island) and board a passenger ferry to the island; crossings typically take around 1.5-2 hours depending on vessel and sea conditions.

Once on Weizhou Island, the main villages and sights are reached on foot, by local shuttle or taxi from the ferry pier.

Tips for Visiting Weizhou Island#

  • Take one of the earliest ferries from Beihai/Weizhou ferry terminal so you arrive before day-trip crowds and have better light for photographing the volcanic coast.
  • Check tide and weather forecasts before setting out - the island's coastal rock formations and some walking routes are best seen at low tide and in calm conditions.
  • Make time to explore the island's volcanic rock formations and western cliffs rather than sticking to the main town shoreline; these areas are the island's most distinctive landscapes and are often overlooked by short-stay visitors.

Best Time to Visit Weizhou Island#

Visit Weizhou Island in the cooler, drier months (October-April) for more comfortable conditions and calmer seas.

Mild, drier season
October-April · ~15-25 °C
Generally mild and relatively dry - a comfortable time for beach walks and exploring the island.
Hot, humid summer
May-September · ~26-33 °C
Hotter and more humid with a higher chance of storms; sea conditions and visibility can be affected in peak summer months.

Weather & Climate near Weizhou Island#

Climate

Weizhou Island's climate is classified as Humid Subtropical (Dry Winter) - Humid Subtropical (Dry Winter) climate with hot summers (peaking in July) and mild winters (coldest in January). Temperatures range from 13°C to 32°C. Abundant rainfall (1557 mm/year), wettest in August with a pronounced dry season.

Air Quality: AQI 69 Moderate
Best Time to Visit
NovemberOctoberMarch
Temperature & Rainfall
Temperature Range
33°
Warmest Month
8°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Very Good 13° - 19° 16° 21 mm overcast 81% 3.3 m/s 0.9 moderate 10.9h
February Very Good 14° - 19° 16° 37 mm overcast 86% 3.3 m/s 1.1 high 11.3h
March Very Good 16° - 22° 19° 49 mm overcast 87% 3.1 m/s 1.2 high 11.9h
April Very Good 21° - 26° 23° 101 mm overcast 88% 3.2 m/s 1.5 very high 12.5h
May Good 24° - 30° 27° 204 mm overcast 86% 3.0 m/s 2.0 very high 13.0h
June Acceptable 26° - 31° 34° 231 mm overcast 85% 3.3 m/s 2.0 extreme 13.3h
July Acceptable 27° - 32° 35° 246 mm overcast 83% 3.2 m/s 2.1 extreme 13.2h
August Acceptable 26° - 31° 34° 308 mm overcast 82% 2.7 m/s 2.0 extreme 12.7h
September Very Good 25° - 30° 31° 188 mm partly cloudy 80% 2.8 m/s 1.8 very high 12.2h
October Excellent 22° - 28° 25° 104 mm partly cloudy 78% 3.1 m/s 1.5 very high 11.5h
November Excellent 18° - 24° 21° 46 mm partly cloudy 79% 3.3 m/s 1.2 high 11.0h
December Very Good 15° - 21° 18° 22 mm partly cloudy 77% 3.2 m/s 0.9 moderate 10.7h