Tha Sut Temperature by Month

Tha Sut in Chiang Rai Province, Thailand sees moderate seasonal temperature shifts, with daytime highs between 28°C (82°F) in December and 36°C (97°F) in April, averaging 32°C (90°F) annually. Explore the full monthly breakdown below.

The weather in Tha Sut changes moderately throughout the year, offering enough variation to appreciate each season. Nights are cooler, with lows ranging from 22°C (72°F) to 15°C (59°F).

The chart below illustrates the average maximum day and minimum night temperatures in Tha Sut by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. April, the warmest month, sees 281 hours of sunshine.

The chart below shows the average temperature throughout the year:

Tha Sut's average annual maximum temperature is 32°C (90°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

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

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

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 Tha Sut, December is the coolest month, with average highs of 28°C (82°F) and humidity around 77%, considered high. In April, the warmest month, temperatures average 36°C (97°F) with 66% humidity, conditions that feel high. 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Tha Sut this rarely lasts long on the ground.

For more on Tha Sut's weather, including monthly rainfall, sunshine hours, and humidity, visit our Tha Sut climate page.