Thailand has a tropical climate with three distinct seasons:
- a hot season from March to mid-May;
- a rainy season caused by the southwest monsoon, which generally lasts from mid-May to October;
- and a dry and relatively cool season from November to February, when the northeast monsoon from the Asian continent prevails.
However, the relatively cool season is felt in the north and inland areas, while it is hot even in winter on the coasts and in the south.
Weather in Thailand by month
This is the weather in Thailand each month.
It is one of the coolest Thai months. Temperatures lie between the lowest of 20s to the lowest of 30s (C). Most of the places and with a smallest of 10-15oC, the coldest of Chiang Mai. Rain is uncommon. It’s rare. This is the country’s highest holiday season, and all are full. In the evening, a light sweater or jacket is preferred. (Average temperature of the water 28oC.
The average temperatures in February are close to around 22-32oC in January. Thailand’s weather for February is similar. The probability of rain in the north rises as it falls to the south. In southeast and southwestern Thailand, the weather is excellent. In the mid-20s, there was plenty of sunshine and temperature.
Thailand’s summer precursor in March is fast growing. It is also the start of the shoulder season, especially on the islands. It’s quite dry and a nice time to dive off the west shore. (The average temperature of 26 – 31oC, even though it can go up to 35oC during the day.
High humidity, hot and oppressive. As the monsoon approaches, the south and east side may be a little colder, and a shower in the west. Except that the average temperature is 29-34°C.
But the temperature will rise above 35oC in different locations.
May be a little colder, but also oppressive, and the heavy rainfall increases dramatically moisture. With many sunny days, crowds are small. Thailand is nearly dry to the north and east. (Average temperature 28-34oC, but may be higher than 35oC in some areas.
Thailand’s May weather: May be a little colder, but also oppressive, and the heavy rainfall increases dramatically moisture. With many sunny days, crowds are small. Thailand is nearly dry to the north and east. (Average temperature 28-34oC, but may be higher than 35oC in some areas.
The monsoon covers almost the entire region, and the west coast is highly rainy. The weather is close to May’s otherwise. (Average 28-34oC temperature but can vary in several places over 34oC. Average 30oC water temperature).
The largest rainfall in North and West Thailand and the sun and dry East Coast is in August. The amount of moisture is very high.
Because of strong rainfall and stormy seas. Beach conditions are poor throughout the region. It is unstoppable that crowds are thin and robberies will hire lodging.
Rains and humidity begin to decrease. The cool effect of the beginning of winter is starting in northern Thailand. The south is already very hot and wet.
There are east islands like Koh Samui and Koh Pha Ngan in the wettest, but the rest is pretty dry and cool. It’s also the beginning of Thailand’s peak season.
December is one of Thailand’s best months, with minimal rain and sunny and nice daylight. The south-east has rainfall, but in this period the west coast is ideal. On the north at night, a light sweater may be recommended. (Mid-range 30 C. Mid-range waters of 28 C.)
Source: Climates to Travel