Hanoi has a humid tropical climate, characterized by monsoons, like most of northern Vietnam. Summers, between May and September, are very hot with plenty of rain, while winters, from November to March, are cold and relatively dry. During the transition months of April and October anything is possible, and spring often brings light rain. The hottest month of the year is June. January is the coolest month, usually beset with a cold north-easterly wind.
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