The climate is typically tropical and fairly cool on the summit of Doi Inthanon. In the winter, the average temperature is in January and temperatures can sometimes drop below . On 21 December, 2017, an all-time low temperature of was recorded at 06:30 at km 44.4. From March to June, temperatures are pleasant, especially at higher altitudes. The rainy season runs from April to November, when it sometimes rains for more than two hours per day.