In Vietnam there are two different weather patterns: the Northern one with 4 seasons (spring, summer, autumn, winter) and the Southern one with 2 seasons (dry, rainy). Generally speaking the Northern weather pattern is similar to weather patterns in most North Hemisphere countries (summer from June to August etc.). In the south, the rainy season usally last from April to November and the dry season from November to April.
Tham khảo ~.~