Weather in Chiang Mai in May 2025
Average weather
Average temperature in Chiang Mai in May
Going from a maximum of +43°C during the day to a minimum of +24°C during the night, the temperature in May averages around +37°C.
The average maximum temperature goes down 5% by the end of the month, compared with the beginning of the month, from +36°C to +35°C.
Is Chiang Mai warm or cold in May?
Chiang Mai is typically hot in May.
Maximum temperatures go down compared to the previous month from +37°C to +35°C. The minimum temperature also goes up from +24°C to +25°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
May is one of the warmest months in Chiang Mai, here is the comparison with other months:
Climate in Chiang Mai in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +37°C | +35°C | +33°C | ||||
| Min. temperature | ||||||
| +19°C | +20°C | +22°C | ||||
| Max. temperature | ||||||
| +43°C | +43°C | +40°C | ||||
| Rainfall | ||||||
| 34 mm | 138 mm | 146 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 54% | 67% | 73% | ||||
| Air pressure | ||||||
| 1007 HPa | 1006 HPa | 1005 HPa | ||||
| Sunny days | ||||||
| 13 | 2 | 0 | ||||
| Cloudy days | ||||||
| 4 | 3 | 2 | ||||
| Rainy days | ||||||
| 6 | 13 | 20 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May typically has worse weather conditions compared to April. It’s getting colder in May. From +37°C in the day, the average maximum temperature lowers to +35°C. Prepare for more rain. Average rainfall goes from 34 mm to 138 mm. Humidity rises from 54% to 67%. The average wind speed doesn’t change much during May, staying around 1 m/s. The days becoming less sunny, going from 13 sunny days in April to 2 in May.
June 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 May, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Chiang Mai?
Climate Change over Years
The climate in Chiang Mai in May 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 May a good time to visit Chiang Mai?
Can you sunbathe in Chiang Mai in May?
Is Chiang Mai rainy in May?
Is it sunny in Chiang Mai in May?
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.