Chiang Mai Weather in August
August in Chiang Mai brings very high temperatures, with highs of 32°C (90°F) and nights dropping to 24°C (75°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in Chiang Mai in August
As part of the rainy season, Chiang Mai sees around 21 days of rain in August, with an average of 260 mm (10 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Chiang Mai in August
August in Chiang Mai brings very high temperatures, with highs of 32°C (90°F) and nights around 24°C (75°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Chiang Mai in August
The city usually sees around 116 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).
Wind Speed in Chiang Mai in August
Wind speeds average 1 m/s (2 knots) during August. At this speed, you'll experience mostly light air movement that's just barely noticeable. As an average, some days will be completely calm while others have gentle breezes you can feel on your skin.If you're looking for dry conditions and comfortable temperatures, August may not be the ideal month to visit Chiang Mai. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Chiang Mai's climate page.
Chiang Mai Temperature in August
Min Temperature
24°C (75°F)
Max Temperature
32°C (90°F)
Chance of Rain
69%
Precipitation
260 mm (10 in)
Rainy days
21 days
Humidity
81%
Windspeed
1 m/s (2 knots)
Sunshine
116 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Chiang Mai typically stay consistent throughout August, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Chiang Mai in August
Browse day-by-day weather records for Chiang Mai spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Chiang Mai historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Chiang Mai.
- The hottest August day on record in Chiang Mai reached 37°C (99°F) (August 7, 1987).
- Chiang Mai experienced its chilliest August day on August 30, 1990, reaching only 25°C (77°F).
- The coldest night in August in Chiang Mai was on August 9, 1987, with a minimum of 20°C (68°F).
Best Places in Thailand in August
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in August →
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What to Wear in Chiang Mai in August
Warm but pleasant conditions in Chiang Mai in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Chiang Mai in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Chiang Mai's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Chiang Mai climate overview or explore weather in Thailand.
