The best time to visit Hanoi is during the autumn months (September to November) or the spring months (February to April). During these periods, the weather is pleasant, with mild temperatures and lower humidity. The summer months (May to August) can be hot and humid, while the winter months (December to January) can be chilly and damp.

Hanoi is generally considered a safe city for tourists. Petty theft like pickpocketing can occur in crowded areas, so be mindful of your belongings. Violent crime against foreigners is rare. As with any travel destination, it's advisable to exercise common sense and take precautions, such as avoiding poorly lit areas at night and not flashing valuables. The Vietnamese people are known for their hospitality, and you'll likely find yourself welcomed with warmth and friendliness.

Citizens of many countries, including most Western nations, can visit Vietnam for up to 15 days without a visa. However, if you plan to stay longer or are from a country that requires a visa, you will need to apply for one in advance. You can check the visa requirements for your country on the website of the Vietnamese embassy or consulate.

Hanoi is packed with historical and cultural attractions. Some of the must-sees include the Ho Chi Minh Mausoleum, the Temple of Literature, Hoan Kiem Lake, the Old Quarter, and the Water Puppet Theatre. If you have more time, consider taking a day trip to Halong Bay near Hanoi, a UNESCO World Heritage Site known for its stunning limestone karsts and emerald waters.

Hanoi offers a variety of transportation options, including taxis, ride-hailing apps, motorbike taxis (xe ôm), public buses, and cyclos. Taxis and ride-hailing apps are convenient for point-to-point travel, while motorbike taxis offer a more adventurous experience. Public buses are a budget-friendly option, but they can be crowded and confusing. Cyclos are a leisurely way to see the sights, especially in the Old Quarter. For day trips or if you have a lot of luggage, consider renting a car.