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When to go & weather
The climate is tropical, with wet and hot weather much of the year. But due to the city's latitude, temperatures drop drastically in the wintertime and the wind chill and dampness means winter weather can feel cold. If possible, avoid the summer months of mid May to mid September, as the city turns into a sweltering sauna with little to no wind.
Best time to visit
Hanoi is a year-round destination and even the rainfalls of the hot, rainy summer season (May to October) are over in a couple of hours, refreshing the city and giving way to sunshine. The heaviest rains are generally experienced from June to August. In the run-up to the rainy season, the humidity increases dramatically and sightseeing can be quite exhausting. Winters, meanwhile, are usually cool but with persistent drizzle, so don’t forget a waterproof.
Representing the typical weather of tropical monsoon type in Northern Vietnam, Hanoi has the hot summer with high rainfall and the dry cold winter. The city also receives a large amount of sunlight and a relatively high humidity all throughout the year. Although the weather is divided into two main seasons: rainy season (from January to September), and dry season (from October to April), thank to transition months, Hanoi still experiences all four seasons: spring, summer, autumn and winter.
Lasting from February to April, Hanoi’s spring is humid and wet with drizzles. The average temperature normally ranges from 15 to 20 Celcius degree. As this kind of weather is suitable for the plants to grow and flowers to blossom, spring will be the best time for tourists to witness the vitality of tropical nature. Spring is also the time for Tet holiday- the most essential and longest Vietnamese festival of the year.
Hanoi’s summer is very hot with the average temperature of 32 degree (and has risen up in recent years), lasting from May to August (July is the hottest month). Since global warming has become a more and more serious problem, some summers are dry while others may be extremely wet with high humidity. Heavy rain is one feature of Hanoi’s summer, so don’t forget to bring a raincoat or an umbrella with you whenever leaving home. Moreover, be ready to be sweat under the sun during the day and a thunderstorm in the afternoon or evening!
Fall is considered the most beautiful and romantic time for travellers to visit Hanoi. This season is quite short, typically from middle of September to the end of November. With the average temperature is 25 degree, Hanoi’s autumn is charming with warm sunlight, cool breeze and dry atmosphere. If you love seeing the leaves change color, enjoying some local autumn specialties such as young green rice, living slowly for a to appreciate the beauty of your life, you definitely should come to Hanoi in autumn.
The cold weather of Hanoi will start from December and may last until late February, with the average temperature of 17.2 degree. However, sometimes it may drop to below 10 degree, and the high humidity will lend a hand in making the weather bitter cold. Bring some serious warm clothes is necessary, if you do not want to get a cold when visiting a tropical country! Hanoi’s winter is also famous for many delicious street foods which can warm you up in a chilly day.
Hanoi weather by month
Many people take it for granted that Vietnam is a tropical country, which can be translated into a year-round over-heated weather. In fact, Hanoi has four seasons and each month differs from another in terms of humidity, temperature and of course, seasonal fares.
You think London has the most unpredictable weather in the world? You will need to think twice after visiting Hanoi! Many Hanoians often envy their Southern brother - Ho Chi Minh City - for their stable and consistent climate. Conversely, Saigonese has reason to prove otherwise: Hanoi's weather is way too exciting to miss.
Below you can find an overview of weather by month in Hanoi.
|January||17 C degree||68%|
|February||18 C degree||73%|
|March||20 C degree||78%|
|April||24 C degree||76%|
|May||28 C degree||73%|
|June||30 C degree||75%|
|July||29 C degree||76%|
|August||29 C degree||79%|
|September||28 C degree||76%|
|October||25 C degree||69%|
|November||27 C degree||68%|
|December||19 C degree||67%|
See more Hanoi travel guide at here.