When Is the Best Time to Visit Hanoi? Seasons and Weather Explained

There is no single best time to visit Hanoi for everyone, but there are clear trade-offs. The city has four distinct seasons, and each one changes how a day of walking feels. This guide uses official climate records to show what each season is really like, so you can choose the one that suits you.

The short answer

If you want the most comfortable weather for walking around the Old Quarter and the lakes, aim for October and November, as autumn turns into early winter. Temperatures are falling, rain days are becoming fewer and the heavy summer rains are over.

Spring, especially March and April, is a good second choice: mild temperatures, but often grey skies and frequent light rain. Summer is hot and wet. Winter is dry and cool, and pleasant if you pack layers.

This is our reading of the official numbers in the table above, not a promise about any particular week. Weather varies from year to year.

The best time to visit Hanoi, season by season

Vietnam’s government portal describes Hanoi’s climate as tropical monsoon with four seasons, and puts average humidity at around four-fifths across the year. The figures in the table are the 1991–2020 averages published by the World Meteorological Organization using data from Vietnam’s national weather service.

Spring (February to April)

Spring starts around the Lunar New Year. Days warm up steadily, but this is also the season with many rain days and little actual rainfall, which in practice means frequent light rain and damp, grey days rather than downpours. Bring a light rain jacket rather than an umbrella you have to juggle on narrow pavements.

Summer (May to August)

Summer is hot and humid, and most of the year’s rain falls in these months. Plan indoor sights for the middle of the day and carry something waterproof.

Autumn (September and October)

Early autumn can still be hot and wet, but by October temperatures and rainfall are both dropping: fewer rain days and warm rather than hot afternoons.

Storms from the sea can reach the north in the wet months. In September 2024, Typhoon Yagi brought down thousands of trees across Hanoi and flooded parts of the city. If you travel in summer or early autumn, keep an eye on official warnings.

Winter (November to January)

Winter is the dry season. November is often still mild, but December and January are cool, with average daily highs around twenty degrees and colder nights, so pack a warm layer.

What visitors often get wrong

• Treating Vietnam as one climate. Hanoi is in the north and has a real winter. Ho Chi Minh City, in the south, stays warm all year and has its dry season from December to April, according to the same WMO records. Packing for one city does not work for the other.
• Packing only summer clothes for a winter trip. A sweater or light jacket is useful from December to February.
• Ignoring the Lunar New Year. Tết moves with the lunar calendar; in 2027 it falls on 6 February. It is a special time to be in Hanoi, but traditional markets and many small shops close for the first days of the holiday. See our guide to Tết in Hanoi before you book.
• Reading “rain days” as washouts. In spring, many rain days bring only light rain. In summer, the rain is much heavier.

Do and don’t

• Do check the forecast a few days before you travel and again each morning.
• Do carry water and plan shade breaks in summer.
• Don’t plan long outdoor walks for the middle of a summer day.
• Don’t assume a storm warning is someone else’s problem; follow local instructions if one is issued.

Where to check official, current information

For forecasts and warnings about storms, heavy rain, cold spells and heat, the official source is Vietnam’s National Centre for Hydro-Meteorological Forecasting (nchmf.gov.vn), which publishes in Vietnamese. Your accommodation can also tell you about local disruption. Climate averages describe what is typical; only a forecast tells you what is coming.