Best Time to Visit Halong Bay: When to Go & Monthly Weather Averages

Halong Bay Weather (2025)

The climate of Ha Long is primarily tropical monsoon, characterized by a hot and humid summer from April to October, and a cooler, drier winter from November to March. With major tourism activities focused on ocean and island experiences, the optimal time to visit Ha Long Bay is during the summer months. This period allows travelers to enjoy a wide range of services and activities. Moreover, this season features vibrant and festive events, such as the Ha Long Tourism Festival in April and the Ha Long Carnival in May. It is advisable to avoid visiting Ha Long Bay in January and December, as these months tend to be the coldest of the year, making outdoor exploration less enjoyable.

Photo : baoquangninh.com.vn

Monthly Average Weather Overview

To aid in planning your visit, here’s our updated guide on Halong Bay weather by month:


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