Halong Bay in July weather hot or cool?

In July, the weather in Halong Bay is generally hot and humid, typical of summer in Northern Vietnam. You can expect average temperatures ranging from 26°C to 32°C, but it can sometimes feel even hotter due to the high humidity, which averages around 75 - 80%. While there are often sunny days with around 7 - 8 hours of sunshine, July also falls within the rainy season, with an average of 12 - 15 rainy days and significant rainfall.

Should I go on a Halong Bay cruise June or July?

Both June and July in Halong Bay are hot and humid with similar chances of rain, including potential heavy but short downpours. July, however, falls within the peak of the storm season, carrying a slightly higher risk of cruise disruptions or cancellations due to unpredictable weather, while June might be marginally less crowded before the full domestic summer holiday rush.