1. Climate: Hanoi is in the dry season in January with cooler temperatures (averaging 15-20°C or 59-68°F) and less humid than other months. Hence, this is a favorable time for sightseeing and outdoor activities.
Tourism: January is when tourists flock, primed with Tet holiday. Tet usually falls around late January or early February. This is when the city is wonderfully dressed up, has many cultural events and festivities. It can also be more crowded and costly at the same time.
3. Cultural Experiences: January is an appropriate time to visit if you'd like to experience Vietnamese culture. You could experience traditional celebrations and local food and markets, which are usually very lively.
4. Places to Visit and Things to Do: Many of the attractions in Hanoi, such as the Old Quarter, Hoan Kiem Lake and the Temple of Literature can be enjoyed all year long. Thus, the month of January is great for sightseeing because of comparatively cooler weather.
January is a peak travel month in Vietnam, particularly for winter sports and for exploring historical sites, markets, and cultural events. Indeed, the coolest months of the year for the city; the perfect time for a visit. The crowds will just be a little bit busier than other months though, so you will need to do your homework and book lodging early to avoid being disappointed.
January is actually a special time to visit Hanoi. This is the coldest month but temperatures generally stay at around 15-20 °C (59-68 °F), so the city is lively with lots of things to do. The dry and pleasant weather lends itself to historical sites including Hoan Kiem Lake, the Old Quarter and countless temples, allowing travelers to sidestep the oppressive heat and humidity that typically arrives in the summer.