Vietnam in July can be a good option, depending on your preferences. The weather varies across regions: the north (Hanoi, Halong Bay) is hot and humid with frequent rains, the central region (Hue, Da Nang) is warm and sunny, ideal for beaches, and the south (Ho Chi Minh City) experiences the rainy season with afternoon storms. Pros include fewer crowds, lush scenery, and ideal beach weather in central Vietnam. However, there are cons such as frequent rain in the north and south, and high heat and humidity. Tips for traveling include packing light, breathable clothing and rain gear, planning some indoor activities, and staying hydrated. If you don't mind occasional rain and humidity, July offers a chance to explore Vietnam with fewer tourists and lush landscapes.
You can check more for the best time to visit Vietnam with destinations in the link below.
https://threeland.com/blogs/the-best-time-to-visit-vietnam-with-destinations