Chiang Mai Weather in August
Typical weather, rainfall, and packing tips for Chiang Mai in August
Thailand · August
Chiang Mai Weather in August
August weather in Chiang Mai averages 29°C with 14 rain days and 80% humidity. Continued monsoon.
Daytime high
32°C
Nighttime low
25°C
Rain days
14 days
UV index
9
When to visit Chiang Mai?
● Great·● Okay·● Avoid
Typical Weather in Chiang Mai in August
Based on 30-year historical averages.
Temperature
Conditions
What to Expect in August
- 1Daytime highs around 32°C, dropping to 25°C at night.
- 2Expect 14 rain days — pack a waterproof jacket.
- 3Humidity sits at 80% — quite humid.
- 46 hours of sunshine per day on average.
- 5UV index of 9 — use SPF 50+.
What to Pack for Chiang Mai in August
Best Activities for August Weather
Outdoor sightseeing
Plan outdoor activities for mornings when temperatures are most comfortable.
Indoor attractions
With 14 rain days, museums and covered markets are great backup plans.
Food and culture
Summer seasonal dishes and local festivals make August culturally rich.
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Frequently Asked Questions
How we work this out
Temperature and rainfall figures are 30-year meteorological averages. Crowd levels come from national tourism arrival data. Price bands reflect mid-range accommodation and economy flights from major long-haul cities, sampled quarterly.
Last updated 18 July 2026 · Written by the Holicay travel team