Ha Long is on almost every northern Vietnam itinerary. But the same bay in March and in October are two entirely different experiences — and most disappointed reviews come down to choosing the wrong season rather than the wrong boat.

Ha Long through the year

October to December: the best window

Clear skies, low humidity, calm water and comfortable temperatures day and night. Visibility across the limestone islands is at its best, and kayaking or hiking excursions are least likely to be cancelled. In exchange, cabins are expensive and need booking well ahead.

January to March: the misty season

The bay sits under low mist — atmospheric, wonderfully photogenic in a minimalist way, but with limited visibility and damp, cool air. If your travellers want blue-sky, turquoise-water photographs, this is not the season for them.

April to June: sunshine and warm water

The ideal window for swimming and kayaking. Sunny days, warm sea, and the small beaches around the bay in full use. It is also peak domestic season, so expect more boats on the water.

July to September: the storm season

The landscape is at its greenest and prices at their lowest, but there is real risk attached: when a storm approaches, the port authority suspends departures and every cruise stays at the pier. Travelling in these months, always keep a spare day in the itinerary.

Choosing a route: Ha Long, Bai Tu Long or Lan Ha?

RouteCharacterBest for
Ha Long BayThe iconic sights — Sung Sot cave, the Fighting Cocks isletFirst-time visitors
Bai Tu LongFewer boats, quieter, more untouched sceneryTravellers avoiding crowds
Lan HaSmall beaches, fishing villages, close to Cat BaActive, outdoor-minded guests

One night or two?

A one-night cruise fits a tight itinerary, but in practice you get roughly half a day on the water once transfers and boarding are accounted for. Two nights reach further, quieter parts of the bay and give you a complete second morning — usually the finest few hours of the whole trip.

If you can upgrade only one thing about a Ha Long trip, add a night rather than a cabin category.

Three small details that change the experience

  • Take an upper-deck cabin with a balcony if budget allows — the morning on the bay is worth the early start.
  • Ask how many cabins the boat has. Under 25 cabins feels markedly calmer than a large vessel.
  • Bring shoes with grip. Cave steps and viewpoint stairs are often slick.

Victoria Tour works with cruises across all three routes and can match a vessel to your specific travel dates.