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Hanoi Weather and Climate: A Comprehensive Guide

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 maximum day and minimum night temperature

Visitors to Hanoi can expect significant temperature changes throughout the year. Average maximum 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 drop to an average of around 15°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

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. For more details, please visit our Hanoi Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

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. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Forecast for Hanoi

Sun   Jan 12
21°C | 10°C
N 4 m/s
partly cloudy and no rain

partly cloudy and no rain

Mon   Jan 13
22°C | 10°C
SE 4 m/s
clear and no rain

clear and no rain

Tue   Jan 14
24°C | 12°C
SE 3 m/s
almost clear and no rain

almost clear and no rain

Select a Month of Interest

Check the conditions for any month of 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:
  • When is the rainy season in Hanoi?
    Rainy season in Hanoi occurs in the months of May, June, July, August and September.
  • Which is the warmest month in Hanoi?
    June has an average maximum temperature of 35°C and is the warmest month of the year.
  • Which is the coldest month in Hanoi?
    The coldest month is January with an average maximum temperature of 21°C.
  • Which is the wettest month in Hanoi?
    August tops the wettest month list with 338 mm of rainfall.
  • Which is the driest month in Hanoi?
    December is the driest month with 37 mm of precipitation.
  • Which is the sunniest month in Hanoi?
    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.