Hanoi Climate by Month
Hanoi has a warm china climate typical for the region. This means the city experiences wet summers and mild, dry winters. The rainy season begins in May and is over by mid-October. We recommend visiting Hanoi from November until February when it's dry and the temperature and humidity are also much lower compared to the rest of the year. Hanoi can be very busy during this period so it is recommended to book a place to stay in advance.
Average day and night temperature
Visitors to Hanoi can expect significant temperature changes throughout the year. Average daytime temperatures range from a very warm 35°C in June, the warmest time of the year, to a pleasant 21°C during cooler months like January. At night, temperatures typically average around 15°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Hanoi is known for its substantial rainfall, with annual precipitation reaching 1832 mm. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, August receives heavy rainfall, averaging 338 mm of precipitation, recorded across 17 rainy days. In contrast, the drier season, December brings less rainfall, with 37 mm over 5 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Seasonal changes in sunshine hours are quite dramatic in Hanoi. While July receives considerable daily sunshine with up to 6.5 hours, February marks the darkest time of the year, where sunshine is scarce with only 1.5 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Hanoi.
Relative humidity over the year
The best time of year to visit Hanoi in Vietnam
During the months of January, February, March and December you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Rainy season in Hanoi occurs in the months of May, June, July, August and September.
June has an average maximum temperature of 35°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 21°C.
August tops the wettest month list with 338 mm of rainfall.
December is the driest month with 37 mm of precipitation.
July is the sunniest month with an average of 196 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
