When is the Rainy Season in Thailand?

The rainy season in Thailand varies depending on the region and is influenced by the monsoon. In most of Thailand rainy season is experienced from May to October. The rainy season on the east coast of Southern Thailand (Koh Samui, Koh Phangan) normally starts later and can last until the beginning of December.

For most of Thailand, the most rainfall is accumulated in September and October making them the wettest months in Thailand. However, the east coast of Southern Thailand gets the heaviest rainfall in November.

Even if the rainy season in Thailand might look less attractive for visiting the country, the weather here is still very warm and the rain in most cases come as a short strong shower in the afternoon. It means that you still can get plenty of sunshine and avoid crowds of tourists. Bargain deals for various accommodations are normally offered during this time as well. Just keep your trip plan flexible and you will have a nice holiday during Thailand’s rainy season.

The Rainy Season in Thailand's Cities & Islands

As the weather in Thailand differs quite a lot, depending on the region and the time of the year, our chart of rainy weather ratings will help you to get an idea about the rainy season in Thailand's cities and islands.

Destination Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Bangkok ★★★★★ ★★★★★ ★★★★★ ★★★★☆ ★★☆☆☆ ★★☆☆☆ ★★☆☆☆ ★★☆☆☆ ★☆☆☆☆ ★★☆☆☆ ★★★★☆ ★★★★★
Chiang Mai ★★★★★ ★★★★★ ★★★★★ ★★★★☆ ★★★☆☆ ★★☆☆☆ ★★☆☆☆ ★★☆☆☆ ★★☆☆☆ ★★★☆☆ ★★★★★ ★★★★★
Krabi ★★★★★ ★★★★★ ★★★★☆ ★★★☆☆ ★★☆☆☆ ★★☆☆☆ ★★☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★★☆☆☆ ★★★★☆
Koh Samui ★★★★☆ ★★★★★ ★★★★★ ★★★★☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★☆☆☆☆ ★☆☆☆☆ ★★★☆☆
Phuket ★★★★★ ★★★★★ ★★★★☆ ★★★☆☆ ★★☆☆☆ ★★☆☆☆ ★★☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★★☆☆☆ ★★★★☆
Pattaya ★★★★★ ★★★★★ ★★★★☆ ★★★★☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★☆☆☆ ★★☆☆☆ ★★★★☆ ★★★★★
Kanchanaburi ★★★★★ ★★★★★ ★★★★★ ★★★★☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★☆☆☆ ★★☆☆☆ ★★★★☆ ★★★★★
Hua Hin ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★★☆☆ ★★☆☆☆ ★★★★☆ ★★★★★
Koh Chang ★★★★★ ★★★★★ ★★★★☆ ★★★☆☆ ★★☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★★☆☆☆ ★★★★☆ ★★★★★
Isan ★★★★★ ★★★★★ ★★★★★ ★★★★☆ ★★★☆☆ ★★☆☆☆ ★★☆☆☆ ★☆☆☆☆ ★☆☆☆☆ ★★★☆☆ ★★★★★ ★★★★★

★★★★★ - chance of getting wet is close to minimum

★★★★☆ - a bit of rain every few days might be expected

★★★☆☆ - the rain isn't constant and long lasting, if any

★★☆☆☆ - chances of rainy day are bigger than 50/50   

★☆☆☆☆ - lots of rain can be expected

 

The rainy season in these Thailand's cities and islands comes at the same time: