Thailand Weather

 Climate Zone: tropical monsoon climate 

 Climatic Features: Hot all year round, while November to February is relatively cool. June to October, affected by south-west monsoon, is rainy.
 Average Temperature of a Year: 22-32℃ (71.6-89.6℉)

 Hottest Month: April; Hottest City: Kanchanaburi: 23-34℃ (73.4-93.2℉)

 Coolest Month: December; Coolest City: Chiang Rai 18-30℃ (64.4-86℉)
 

Most parts of Thailand is in the tropical monsoon climate area, so it is hot through most of the year. The temperature is between 19-36℃ (66.2-96.8℉) over the whole year, and the average yearly temperature is 28℃ (82.4℉). The hottest season is summer or hot season from March to May. During the summer in 2024, the highest temperature reached 44℃ (111.2℉), which also leads to dry weather. Winter or cool season is relatively cooler than in summer, when the average temperature is 23℃ (73.4℉). Besides that, there is an obvious rainy season from June to October. During these five months, the total rainfall could reach 917mm (36in), which takes up 85% of the rainfall of the whole year.
 

Meanwhile, the weather in northern mountainous area of Thailand like Chiangmai is much cooler than middle area like Bangkok and southern islands. The temperature in the northern mountainous area can even drop below 10℃(50℉) in the cool season. The northern area also has a larger temperature difference between noon and night than other areas.
 

Although Thailand weather is hot all over the year, in despite of summer clothes, it is necessary to bring thin coats and long-sleeve shirts and long trousers or long dress. As a Buddhist country, Thailand has plenty of temples. When you are visiting a temple or Thai palace, you should wear decent clothes to show your respect. Then the temperature controlled by air conditioners indoors usually is quite low. Thin coat or long pants will help to avoid catching old from the temperature gap between indoors and outdoors.