The Gulf Coast islands, such as Koh Samui, Koh Phangan and Koh Tao, are the best destinations to visit Thailand during September, being drier and cooler than the rest of the country. This does not mean, however, that these islands are not subject to the heavy monsoon rains that prevail during this period and the constant heat in Thailand throughout the year.
Central Thailand and Bangkok receive the worst of the rain during September, and the Andaman coast is extremely wet, with rough seas. Elsewhere in Thailand, during September, monsoon rains begin to fall in volume, if not frequency. Rain falls mostly in the afternoon or evening, and rarely lasts more than an hour or two.
It’s a great time to travel to Thailand and take advantage of cheap accommodation rates and flights.
Thailand enjoys an average temperature of 28°C in September, but in many regions the mercury climbs to 30°C and above, falling only marginally at night. The main feature of Thailand’s weather in September is rain, which falls heavily in tropical afternoon deluges across the country.
Some regions are wetter than others, but everywhere showers are relatively short, with sunny intervals in between. Bangkok averages 320mm of rain during September.
The island of Koh Samui off the Gulf Coast receives slightly less rainfall volume, at 150 mm on average for the month, and the frequency and duration of rainfall tend to be shorter than elsewhere in Thailand.
In Phuket on the Andaman coast, however, it is extremely wet during September, with an average of 410mm of rain.
If the date you have chosen is perhaps not the best time to visit the country, don’t worry, because we have left you information about the climate in Thailand for each month of the year, so you will know which areas are where you can move without having to pay so much attention to the sky.
Anyway, remember that it’s okay if there is some rain, it’s part of the adventure too!
