30YearWeather
Chiang Mai
When to avoid visiting Chiang Mai, Thailand
Seasonal Comparison

Least Favorable Months in Chiang Mai

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

April52/100July52/100August52/100

Good news: Chiang Mai has no truly bad months!

With a score of 52/100, even April(the "worst" month) is still a reasonable time to visit. These months are simply the least favorable compared to other months in Chiang Mai, not objectively bad. Many travelers enjoy visiting during these periods and benefit from lower prices and fewer crowds.

Why April is the Least Favorable (But Still Okay) Time to Visit Chiang Mai

Is April a Good Time to Visit Chiang Mai?

👌Good option with minor considerations
Short Answer

Chiang Mai's April brings intense but manageable heat - 35°C with bone-dry 56% humidity. Evenings cool significantly, creating pleasant dining and walking conditions.

Decision Factors

Extreme heat danger

35.4°C highs, potentially dangerous for outdoor activities

Vaccinations required

Yellow Fever

Feels significantly hotter than 35.4°C

Heat index: 44°C due to 56% humidity

Peak tourist season

85% of annual peak - expect crowds and high prices

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Dengue

Plenty of sunshine

10.7h of sunshine daily

Good For

  • 📸
    Photographers

    10.7h sunshine, 61% clear skies for golden hour shots

  • 💑
    Honeymoon couples

    Wedding score 88/100 with romantic weather conditions

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 👨‍👩‍👧‍👦
    Families with children

    44°C heat index dangerous for children

  • 👴
    Elderly travelers

    Heat index of 44°C poses health risks

  • 🥾
    Outdoor enthusiasts

    Extreme conditions limit outdoor activity options

900 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

Worst52

April

Extreme heat danger, Feels significantly hotter than 35.4°C

View details
2nd Worst52

July

Oppressive heat and humidity, High rainfall period

View details
3rd Worst52

August

Oppressive heat and humidity, High rainfall period

View details

Looking for the Best Time Instead?

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

Best Time to Visit Chiang Mai

Frequently Asked Questions

When should I avoid visiting Chiang Mai?

Based on 30 years of data, the most challenging months are April, July, August. Primary concerns include: extreme heat danger, feels significantly hotter than 35.4°c.

What is the worst month to visit Chiang Mai?

April is typically the most challenging month, scoring only 52/100 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.