30YearWeather
Hanoi
When to avoid visiting Hanoi, Vietnam
Seasonal Comparison

Least Favorable Months in Hanoi

Based on 30 years of NASA satellite data, Hanoi enjoys relatively good weather year-round. However, if you're comparing months, August, June, July are the least favorable — though still perfectly visitable.

August50/100June51/100July51/100

Good news: Hanoi has no truly bad months!

With a score of 50/100, even August(the "worst" month) is still a reasonable time to visit. These months are simply the least favorable compared to other months in Hanoi, not objectively bad. Many travelers enjoy visiting during these periods and benefit from lower prices and fewer crowds.

Why August is the Least Favorable (But Still Okay) Time to Visit Hanoi

Is August a Good Time to Visit Hanoi?

👌Good option with minor considerations
Short Answer

August brings oppressive conditions to Hanoi: 32°C highs feel like 45°C due to 86% humidity. Only recommended for heat-tolerant travelers willing to limit outdoor activities during peak afternoon hours.

Decision Factors

Oppressive heat and humidity

31.5°C with 86% humidity - challenging conditions

High rainfall period

66% rain probability, 8.1mm average

Vaccinations required

Yellow Fever

Feels significantly hotter than 31.5°C

Heat index: 45°C due to 86% humidity

Poor air quality: Unhealthy

Unhealthy. Everyone should reduce outdoor activities.

Peak tourist season

97% of annual peak - expect crowds and peak prices

Good For

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 👨‍👩‍👧‍👦
    Families with children

    45°C heat index dangerous for children

  • 👴
    Elderly travelers

    Heat index of 45°C poses health risks

  • 🥾
    Outdoor enthusiasts

    66% rain probability disrupts outdoor activities

930 observations30-year historical data
Confidence: 95%

Key Challenges During These Months

Extreme Heat

Temperatures can become dangerously hot with oppressive humidity

Heavy Rainfall

Monsoon or rainy season brings frequent downpours and potential flooding

Months to Avoid: Detailed Breakdown

Worst50

August

Oppressive heat and humidity, High rainfall period

View details
2nd Worst51

June

Oppressive heat and humidity, Very hot conditions

View details
3rd Worst51

July

Oppressive heat and humidity, Very hot conditions

View details

Looking for the Best Time Instead?

Discover the optimal months to visit Hanoi with ideal weather conditions, fewer crowds, and better prices.

Best Time to Visit Hanoi

Frequently Asked Questions

When should I avoid visiting Hanoi?

Based on 30 years of data, the most challenging months are August, June, July. Primary concerns include: oppressive heat and humidity, high rainfall period.

What is the worst month to visit Hanoi?

August is typically the most challenging month, scoring only 50/100 in our travel conditions analysis.

Can I still visit during these months?

Yes, many travelers still visit during challenging months. Come prepared with appropriate gear, flexible bookings, and backup plans. Lower prices and fewer tourists can offset the weather challenges.

Are hotels cheaper during these months?

Often yes. Low season typically means reduced hotel rates, easier reservations, and fewer crowds at popular attractions. Some travelers prefer this trade-off.