Ha Long Weather in July

July: hot, wet and humid

Ha Long feels hot from morning to evening, with sticky air and little sunshine. July brings a high of 31°C, humidity of 86%, and rain on 25 days. Showers can interrupt plans, and storms may affect boat trips around Ha Long Bay.

A cruise still gives you the classic limestone-island views, and caves such as Sung Sot offer a break from the open water. But don't count on a full day at the beach or smooth sailing every day. Keep your plans flexible, especially if you're travelling by boat.

Summer crowds and holidays

Vietnamese school holidays bring families to Ha Long in July. Bai Chay's beach and waterfront can feel busy, and popular cruises may fill up faster than in quieter months. Prices are generally higher than in the low season, though winter is a better time for cooler, drier sightseeing.

There isn't a major annual Ha Long festival that reliably falls in July. The summer holiday itself is the main reason for the seasonal crowds. If you're a couple who prefers quiet evenings, the Bai Chay waterfront may feel livelier than you'd like.

A useful local tip

Rainfall is heavier in August, but July is already a very wet month. Check with your cruise operator on the day about weather-related changes, rather than treating the boat schedule as fixed. If a bay trip is cancelled, the Quang Ninh Museum in Ha Long City is a useful indoor alternative.

For a boat trip, ask whether the itinerary includes Sung Sot Cave and how the operator handles cancellations. That gives you a clearer idea of what you'll see if weather changes the route.