Hong Kong has a monsoon-influenced subtropical climate. It is generally mild for more than half the year. About 80 percent of the annual rainfall comes between May and September. The best time climate-wise extends from the end of April when the weather is warm and clean.
Spring is from March to May when the weather is generally pleasant but humid. Summer from May to September is very hot and humid; temperatures usually exceed 31 °C. Autumn lasts from October to early December. Autumn is usually pleasantly clear and sunny, and is the best time to visit Hong Kong. It is comfortable for outdoor activities or country walks. There is little rainfall in autumn. Winter is from mid-December to February. With a mild weather, winter is a good time to go shopping in Hong Kong.
From May to September, there are occasional typhoons and thunderstorms. It’s better to check the forecast in advance.