Changwat Chiang Mai Temperature by Month

Changwat Chiang Mai in Thailand sees moderate seasonal temperature shifts, with daytime highs between 30°C (86°F) in December and 38°C (100°F) in April, averaging 33°C (91°F) annually. Explore the full monthly breakdown below.

The moderate changes in the climate in Changwat Chiang Mai ensure gradual weather shifts through each season. At night, temperatures drop to between 24°C (75°F) and 16°C (61°F) depending on the time of year.

The chart below illustrates the average maximum day and minimum night temperatures in Changwat Chiang Mai by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. April, the city's warmest month, sees 280 hours of sunshine.

The chart below shows the average temperature throughout the year:

Changwat Chiang Mai's average annual maximum temperature is 33°C (91°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Changwat Chiang Mai, December is the coolest month, with average highs of 30°C (86°F) and humidity around 73%, considered high. In April, the warmest month, temperatures average 38°C (100°F) with 57% humidity, conditions that feel moderate. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Changwat Chiang Mai's weather, including monthly rainfall, sunshine hours, and humidity, visit our Changwat Chiang Mai climate page.