The weather in Vietnam is generally described as humid and moderately hot. Patterns are subject to regional variation though, with the northern area being significantly cooler than the central and southern areas. Overall, average temperatures range between 72°F (22°C) and 81°F (27°C), and humidity is usually upward of 80 percent.

Similar to other countries in Southeast Asia, the defining characteristic of weather in Vietnam is the monsoon, a transitional wind that can bring heavy precipitation. The southeasterly monsoon brings a long rainy season between May and October, depending on the location. Otherwise, rainfall is rare and light when it does occur. The humidity is especially oppressive during this period.