30YearWeather
Nagasaki
When to avoid visiting Nagasaki, Japan
Seasonal Comparison

Least Favorable Months in Nagasaki

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

July51/100August51/100January54/100

Good news: Nagasaki has no truly bad months!

With a score of 51/100, even July(the "worst" month) is still a reasonable time to visit. These months are simply the least favorable compared to other months in Nagasaki, not objectively bad. Many travelers enjoy visiting during these periods and benefit from lower prices and fewer crowds.

Why July is the Least Favorable (But Still Okay) Time to Visit Nagasaki

Is July a Good Time to Visit Nagasaki?

👌Decent conditions for most activities
Short Answer

July brings storm season risk to Nagasaki. While typical weather is 29°C with 45% rain, plan for potential disruptions and secure cancellation-friendly bookings.

Decision Factors

Typhoon season active

Western Pacific zone - expect potential typhoon activity

Oppressive heat and humidity

28.5°C with 88% humidity - challenging conditions

Vaccinations required

Yellow Fever

Feels significantly hotter than 28.5°C

Heat index: 35°C due to 88% humidity

Warm tropical seas

27.8°C sea temperature - Hot Soup

Frequent rainfall expected

45% chance of rain - pack waterproofs

Good For

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 👴
    Elderly travelers

    88% humidity creates difficult conditions

  • 💼
    Business travelers

    Storm season may cause flight disruptions

  • 🌡️
    Heat-sensitive visitors

    35°C feels-like temperature creates discomfort

930 observations30-year historical data
Confidence: 99%

Key Challenges During These Months

Extreme Heat

Temperatures can become dangerously hot with oppressive humidity

Storm Season

Typhoons or hurricanes can disrupt travel and cause dangerous conditions

Months to Avoid: Detailed Breakdown

Worst51

July

Typhoon season active, Oppressive heat and humidity

View details
2nd Worst51

August

Typhoon season active, Oppressive heat and humidity

View details
3rd Worst54

January

Typhoon season active, Peak tourist season

View details

Looking for the Best Time Instead?

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

Best Time to Visit Nagasaki

Frequently Asked Questions

When should I avoid visiting Nagasaki?

Based on 30 years of data, the most challenging months are July, August, January. Primary concerns include: typhoon season active, oppressive heat and humidity.

What is the worst month to visit Nagasaki?

July is typically the most challenging month, scoring only 51/100 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.