Weather in Chiang Mai in August 2025
Average weather
Average temperature in Chiang Mai in August
Going from a maximum of +35°C during the day to a minimum of +24°C during the night, the temperature in August averages around +31°C.
The average maximum temperature goes up 36% by the end of the month, compared with the beginning of the month, from +29°C to +33°C.
Is Chiang Mai warm or cold in August?
Chiang Mai is typically hot in August.
Maximum temperatures go up compared to the previous month from +32°C to +32°C. The minimum temperature also goes up from +25°C to +25°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
Take a look at how August is compared to other months in Chiang Mai:
Climate in Chiang Mai in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +32°C | +32°C | +32°C | ||||
| Min. temperature | ||||||
| +22°C | +22°C | +20°C | ||||
| Max. temperature | ||||||
| +39°C | +38°C | +36°C | ||||
| Rainfall | ||||||
| 168 mm | 219 mm | 190 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 0 m/s | ||||
| Humidity | ||||||
| 75% | 78% | 79% | ||||
| Air pressure | ||||||
| 1005 HPa | 1005 HPa | 1008 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 2 | 1 | 1 | ||||
| Rainy days | ||||||
| 23 | 22 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as ok as in July. The temperature levels stay the same in the area of +32°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 168 mm to 219 mm. Humidity rises from 75% to 78%. The average wind speed doesn’t change much during August, staying around 1 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 1 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Chiang Mai is gradually increasing during August, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last August in Chiang Mai?
Climate Change over Years
The climate in Chiang Mai in August has not changed much over the last 43 years.
The average temperature was the lowest in 2011 (+31°C) and the highest in 1998 (+34°C). The driest year was 1998 with only 604 mm of rainfall, and the wettest year was 1994 with 1462 mm.
FAQ
Is August a good time to visit Chiang Mai?
Can you sunbathe in Chiang Mai in August?
Is Chiang Mai rainy in August?
Is it sunny in Chiang Mai in August?
Other cities in Thailand
Monthly weather in Chiang Mai
Source of the data
For this page, we’ve looked at the typical weather in Chiang Mai, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.