Vietnam’s Tet festival is from mid-February to mid-March and it is the same as the Chinese new year. Hanoi is reasonably warm around 20 degrees so this gives people some inclination to travel. It might be chilly at night, so head out with a jacket on. One can enjoy a drip coffee while sitting on the side of the road where it is quite sunny unlike most of the southern east Asia countries during this time. After the weather comes to it’s best, the city is filled with flowers and the best time for tourist in Vietnam begins.
In April, the temperature rises sharply to 27 degrees, and the temperature can reach up to 30 degrees in May, which is the beginning of summer. May to August is the rainy season in Hanoi, and you will definitely experience the hottest and most humid weather. The temperature is around 35 degrees, sometimes even up to 39 degrees. During the day, the sun is blazing and the rain is pouring down, seemingly breaking the thin and fragile roofs from time to time. Outside, people wear raincoats on their heads to protect themselves from the rain. In mid-September, the rainy days become less frequent and Hanoi welcomes the dry autumn, which starts at this time and lasts until the end of November. The hot temperatures are no longer so intense now.