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Co To Island

An island near the Chinese maritime border with clear water and beaches, two hours out from the mainland.

Updated 21 October 2026

Typeisland
WhereQuang Ninh Province
Nearest cityCai Rong on Van Don about 60 km by sea
Best seasonApril to September
Time to allowTwo to three days
Getting thereFast boat from Cai Rong port; sailings depend on the sea and stop in bad weather
EntryBoat fare

Co To lies well out from the Quang Ninh coast towards the maritime boundary with China, and being that far from the river mouths its water is clear in a way that the water around Ha Long is not - which is the main reason people make the crossing. There are beaches at Hong Van and Van Chay, a lighthouse on the high ground, and a smaller island, Co To Con, reached by local boat. It is a domestic destination almost entirely, busy in the Vietnamese summer holiday weeks and quiet otherwise, with the season effectively closed by the winter monsoon.

What you'll find

  • Clear water - far enough out from the river mouths.
  • Beaches at Hong Van and Van Chay - the main stretches.
  • A lighthouse on the high ground - with a view over the island.
  • Co To Con - the smaller island, reached by local boat.

When to go

April to September; boats stop in the winter monsoon. Two to three days.

Good to know

Sailings are cancelled by weather and getting stuck is possible. It is packed in the domestic summer weeks and shut outside them. Accommodation is guesthouses.

Nearby

Quan Lan is south-west; Van Don and the mainland are beyond it.

Key facts

Local nameCô Tô (Vietnamese)
Location20.9910° N, 107.7560° E · map

Source: Wikidata, item Q86753544, read on 18 October 2026.

What to pack for Co To Island

Chosen from what this place is for. Tap a kit for the full checklist.

  • Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
  • Strong insect repellent - DEET or picaridin; the jungle is where bites and disease risk are highest. Find on Amazon
  • Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
  • Long, light, quick-dry clothing - Covers skin from insects and sun without cooking you in the humidity. Find on Amazon

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Plan your trip

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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.

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