Best time to visit Hanoi

The best times to visit Hanoi are during early-February to mid-April, and from late-October to late-December, when you can expect mostly warm, sunny weather with limited rainfall.

Hanoi weather

Hanoi experiences hot, wet summers and cool, dry winters.

Winter, from December through February, averages 17°C (62°F); while summer, from June through September, averages 28°C (82°F).

You can expect hot and wet weather from May to September, while October through April sees less rainfall and cooler temperatures.

Which is the hottest month in Hanoi?
The hottest month in Hanoi is usually June, with an average high temperature of 34°C (93°F), with extreme heat and humidity, and a low of 26°C (80°F).

The hot season usually lasts from early-May through September, with an average daily high temperature above 31°C (87°F).

What is the humidity in Hanoi?
Hanoi experiences notable seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 68% – 82% over the course of the year.

What do the humidity conditions feel like in Hanoi?
We derive the humidity comfort level – what conditions feel like – from the dew point temperature, which measures moisture content in the atmosphere: a higher dew point feels more humid, while a lower dew point feels drier.

Meteorologists agree that dew point temperature is a more consistant indication of 'absolute humidity' than relative humidity, which fluctuates with temperature.

The average annual dew point in Hanoi is 20°C (68°F), and varies over the course of the year from dry and comfortable at 5°C (41°F) to muggy and oppressive at 25°C (77°F).   

The more humid time of year in Hanoi lasts from March through November, when you can expect the comfort level to be muggy at least 35% of the time.

The months with the most muggy days in Hanoi are May through to September, when almost every day in each month is muggy or worse.

December and January are more comfortable, with less than six days in each month that are muggy.

Which is the coldest month in Hanoi?
The coldest month in Hanoi is usually January, with an average high of 20°C (68°F) and a night-time low of 14°C (57°F).

The winter cold season usually lasts from mid-December through February, with an average daily high temperature below 22°C (71°F).

Which is the sunniest month in Hanoi?
The sunniest month in Hanoi is usually July with an average of 6.5 hours of sunshine per day; that's 49% of daylight hours on average.

Which month has the most rain in Hanoi?
August is usually the wettest month in Hanoi, with 381mm of rainfall on average, distributed across 17 days.

Hanoi receives the most rainfall between May and September, with a greater than 31% chance of any given day being a wet day. Much of the summer rainfall comes from thunderstorms.

Rain falls throughout the year in Hanoi. The less-rainy season lasts from early-October through April. January is usually the driest month.

Which is the windiest month in Hanoi?
The windiest month of the year in Hanoi is March, with an average hourly wind speed of 12.7 kilometres per hour (6.8 knots).

The windy part of the year lasts from January through May, with average wind speeds of more than 10.5 kilometres per hour (5.6 knots).

The less-windy time of year lasts from June through December. The calmest month of the year in Hanoi is August, with an average hourly wind speed of 8.5 kilometres per hour (4.5 knots).

The predominant average hourly wind direction varies throughout the year in Hanoi.

Hanoi Weather Averages

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average high temperature (°C)
20 22 24 28 33 35 34 33 32 30 26 22
Average low temperature (°C)
14 16 19 22 25 27 26 26 25 23 20 15
Average daily sunshine (hrs)
3 2 2 3 6 6 6 6 6 5 5 4
Average daily daylight (hrs)
11 11 12 12 13 13 13 13 12 11 11 11
Comfort level – heat
No heat & humidity No heat & humidity Low heat & humidity Moderately hot icon Extreme heat & humidity icon Extreme heat & humidity icon Extreme heat & humidity icon High heat & humidity icon High heat & humidity icon Moderately hot icon Low heat & humidity icon Low heat & humidity icon
Comfort level – humidity (#muggy days)
5 8 16 24 29 29 31 31 29 24 14 6
Average dew point temperature (°C)
13 14 18 21 24 25 25 25 24 20 17 12
Average relative humidity (%)
76 76 82 81 78 74 77 81 78 72 72 68
UV Index (max)
7 10 11 11 11 11 11 11 11 10 8 7
Average days of rainfall (≥1mm)
2 2 4 7 12 14 16 17 12 8 4 2
Average monthly rainfall (mm)
38 21 54 110 185 196 299 381 243 158 46 28
Average wind speed (km/h)
11 12 12 12 11 10 9 8 9 10 10 10
Hanoi, Vietnam

Source: Meteorological data for Ho Chi Minh City is based on weather statistics during 2012 to 2021 by Vietnam's National Hydro-meteorological Service (NHMF) from the closest weather station: Noi Bai International Airport (HAN), located 45km (28mi) north of central Hanoi.

Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.

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Latest update: Best time to visit Hanoi: 6 June, 2024

Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.