Chiang Rai Province is one of several regions in Thailand, with temperatures that range from 28°C (82°F) in December to 36°C (97°F) during the peak of April. We've based our full climate overview on data from Chiang Rai, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
The climate in Chiang Rai Province, particularly in Chiang Rai, is characterized by consistently high temperatures, with average maximums never falling below 28°C (82°F).
March, April and May are generally the hottest months of the year.
When it comes to rainfall, Chiang Rai Province sees significant variations throughout the year. August tends to be the wettest, receiving 366 mm (14 in) of rain, while February is much drier with just 13 mm (0.5 in). Travelers should note that the rainy season falls during May, June, July, August and September, bringing substantial precipitation ranging from 258 mm (10 in) to 366 mm (14 in) monthly. The period of February is the driest, with precipitation levels below 13 mm (0.5 in).
Visitors hoping to maximize their time in the sun should consider planning their trip for March, when daylight hours are at their peak.
