Hanoi area, lying in a plain, belongs to the delta region of Red river and far form sea, it features of hot climatic zone under the influence of South and Northeast monsoons.
Hanoi experiences the typical climate of northern Vietnam where summers are hot and humid and winters are relatively cool and dry.
Summer months remain from May to September and the months are characterized by extreme hot weather with plenty of rain. Summer in Hanoi can get as hot as 38Â°c to 40Â°c (100-104Â°F).
June can be labeled as the most sweltering hot month of the year with mercury rising up to 33Â°c to 39Â°c.
Winter rules from November to March. The weather remains cold and dry. The minimum winter temperature in Hanoi can dip as low as 6-7Â°C (43Â°F)
Northeast monsoon are frequent during the winter months.
January is the coolest month usually accompanied by a cold north-easterly wind. The lowest temperature in average is 12Â°c.
So, the annual temperature varies from 8Â°c to 38Â°c.
During the transition months of April and October, the weather becomes unpredictable as you should be prepared for anything.
Typical of a humid tropical climate, Hanoi is characterized by monsoons like most of northern Vietnam.
The time from July to September witnesses heavy rainfall and sometimes, the excessive rainfall leads to floods.
Autumn and first haft of winter is the most beautiful season in Hanoi.