ClimateForecastSeptemberOctober >>

Koh Samet weather in September (Rayong Province, Thailand)

What can you expect from the weather in Koh Samet during September? Here's what the weather might have in store during this month.

In September, Koh Samet generally has very high temperatures and heavy rainfall. Throughout the day, temperatures typically settle at around 30°C. But by evening, they drop to around 26°C.

While these temperatures are typical, some days might be even hotter. Always be prepared for the unexpected spikes in warmth. Dressing in lightweight and breathable outfits will help you stay cool. Don't forget to stay hydrated and wear sun protection to handle the heat better.

Koh Samet in September falls under the rainy season with heavy rainfall, averaging around 322 mm for the month. In this month, the heaviest downpours of the year are not uncommon. Carrying a poncho might be your best bet to stay dry. Delving into the climate records from the past 30 years, one can predict that nearly 19 days of the month will see rainfall.

The area experiences a moderate amount of sunshine, with approximately 110 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Koh Samet. January, February and December typically offer the best circumstances. While May, June, July, August, September and October tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Koh Samet climate page with graphs.

 

Koh Samet, monthly averages in September

Min TemperatureMin Temperature 26°C  
Max TemperatureMax Temperature 30°C  
Chance of RainChance of Rain 62%  
PrecipitationPrecipitation 322 mm  
Rainy daysRainy days 19 days  
HumidityHumidity 81% *  
SunshineSunshine 110 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Jomtien Beach, Thailand (66 KM, 41 Miles).

Where to go in Thailand in September

Find out more about the weather in Thailand in September and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Koh Samet in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Koh Samet.

Our site offers climate and forecast data for every country in the world. Are you going to Thailand? On this website you can find historical weather averages for many cities in Thailand. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.