Quick verdict
Peak season: Mar–Apr, Oct–Nov. Shoulder: Feb, May, Sep, Dec. Low: Jan, Jun–Aug.
Hanoi has a humid subtropical climate with four distinct seasons.
What's the weather like in Hanoi by month?
Each month classified as peak (best balance of weather and value), shoulder (a step in either direction), or low season.
Why visit Hanoi during Mar–Apr, Oct–Nov?
Gradually warming with frequent drizzle and overcast skies. February can be chilly and damp, but by April the city blooms with flowers and outdoor life picks up.
Shoulder season (Feb, May, Sep, Dec) trades a small weather concession for noticeably smaller crowds and softer prices — often the sweet spot for travelers who want flexibility.
Low season (Jan, Jun–Aug) is when prices fall hardest. Expect weather extremes (heat, humidity, cold, or rain depending on the destination) and reduced hours at some seasonal businesses, but the trade-off can be worth it if budget or solitude matters more than perfect conditions.
What festivals and events happen in Hanoi?
- Tet (Lunar New Year)January-February
Vietnam's biggest holiday. Hanoi fills with peach blossom branches, kumquat trees, and flower markets. Families gather for feasts and fireworks light up Hoan Kiem Lake at midnight.
- Mid-Autumn Festival (Tet Trung Thu)September
A children's festival with colorful lantern processions through the Old Quarter, mooncake stalls everywhere, and traditional lion dances in the streets.
- Hanoi Liberation DayOctober 10
The anniversary of Hanoi's liberation in 1954. Flags fly, military parades march through Ba Dinh Square, and cultural events take place across the city.
- Hung Kings FestivalApril
A national holiday honoring Vietnam's legendary founders. Pilgrimages to Phu Tho province, 85 km northwest, are traditional, and Hanoi celebrates with temple ceremonies.
What months should I avoid in Hanoi?
Avoid Jul–Aug if comfort is your priority — this is when weather extremes peak. That said, prices are also at their lowest, and crowds are thin, so the off-peak window suits travelers who put budget or atmosphere ahead of perfect conditions.
Cooler & warmer in Asia this October
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Frequently asked
When is the best time to visit Hanoi?
The best time to visit Hanoi is Mar–Apr, Oct–Nov. Hanoi has a humid subtropical climate with four distinct seasons. These months balance comfortable weather, manageable crowds, and prices that haven't yet hit peak-season highs.
When is the cheapest time to visit Hanoi?
Low-season months in Hanoi run Jan, Jun–Aug. Flights and hotels typically run 20-40% cheaper than peak. The trade-off is weather (which is why these months are off-peak) and some businesses operating shorter hours, especially in smaller seasonal destinations.
What's the weather like in Hanoi year-round?
Summer averages around 32°C (90°F) and winter averages around 18°C (64°F) in Hanoi. Hanoi has a humid subtropical climate with four distinct seasons. Summers are hot and humid with heavy monsoon rains, while winters are cool and drizzly. The shoulder seasons of spring and autumn are the most pleasant.
What months should I avoid in Hanoi?
Jun–Aug brings peak heat (often above 32°C / 90°F) and humidity. If you must travel during these months, plan indoor activities for midday and shift sightseeing to early morning or evening.
What festivals or events are happening in Hanoi?
Notable events in Hanoi: Tet (Lunar New Year) (January-February); Mid-Autumn Festival (Tet Trung Thu) (September); Hanoi Liberation Day (October 10). Vietnam's biggest holiday. Hanoi fills with peach blossom branches, kumquat trees, and flower markets. Families gather for feasts and fireworks light up Hoan Kiem Lake at midnight.
How many days do I need in Hanoi?
Most travelers spend 3-5 days in Hanoi, which covers the main neighborhoods, top attractions, and a half-day day trip. Add a day if you're visiting during peak season when crowds slow you down, or if you're combining Hanoi with nearby destinations.
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