Why You Should Visit Thailand in September [in 2023]

An Olympic size swimming pool made of Volakas marble overlooks a private beach at the Vala Hua Hin Hotel.



Is September a good month to visit Thailand? Because September is rainy season in Thailand, most parts of the country experience heavy rain. Flooding can be a problem in Bangkok. So you might have to set aside time for indoor activities. However, you can expect discounts at hotels and resorts – if you don’t mind the rain. Are there any parts of the country where rainy is less likely?

Weather in Thailand in September

Mrigadayavan Palace, a.k.a. the Summer Palace, is located in Hua Hin, a beach resort which enjoys more sunny days in September than most parts of Thailand. Photo Credit: Phetchaburi000.

How is the weather in Thailand in September? In fact, September tends to be the rainiest month of the year in Thailand. Thunderstorms are common. And humidity is at its peak. However, it is also one of the coolest months. of the year.

Bangkok has an average of 22 rainy days in September, with an average of 8.66 inches (220 millimeters) of rainfall. And the Thai capital occasionally experiences flooding in parts of the city.

Thailand’s second largest city, Chiang Mai, fares a bit better, with an average of 190 millimeters of rainfall in September.

Regarding beach resorts, you can  expect heavy rains in Khao Lak, Krabi, and Phuket, which averages 400 millimeters (16 inches) of rain in September.  And even Khao Sok and Koh Pha Ngan, which tend to be sunny in August, start to experience heavy rains in September.

But this might be good news for events organizers, whose meetings and other activities usually take place indoors. If you want to  organize an event, You can expect a warm welcome at beach resorts during rainy season!

Recommended September Beach Resorts

Hua Hin Centara Coast Beach Resort and Bistro.
The Regent Cha Am Beach Resort.
Secret Garden Beach Resort in Koh Samui. Photo Credit: Accidental Travel Writer.

In fact, it’s impossible to guarantee sunshine anywhere in Thailand in September. But if Khao Lak, Khao Sok, Koh Pha Ngan, Krabi, and Phuket tend to be rainy,  your chances of sunny days are higher in Cha Am and Hua Hin, which face the Gulf of Thailand. And the same goes for Koh Samui, an off-shore island located within the Gulf of Thailand.

Located 73 miles (117 kilometers) south of Bangkok, Cha Am averages 18 rainy days with 5.28 inches (165 millimeters) of rainfall. Meanwhile, Hua Hin – which is 124 miles (200 kilometers) south of Bangkok – averages 17 rainy days with 4.72 inches (120 millimeters) in September.

Located 470 miles (755 kilometers) south of Bangkok, Koh Samui also averages just 17 rainy days with 5 inches (130 millimeters) of rain in September. But keep in mind that rainfall tends to increase as the month progresses.

If rain doesn’t bother you, September could be one of the best times to visit Thailand. You can shop till you drop at Bangkok’s tony shopping malls. And a little rain won’t hurt you if you want to indulge at a sybaritic spa treatment.

Because it is off-season, many hotels and resorts offer discounts in September. And for events organizers, whose events usually take place indoors, that can be good news.

Thailand September Events

Trade-booths-at-IT&CMA Asia-trade-fair-in-bangkok-thailand
IT&CMA Asia presents unparalleled networking opportunities for MICE professionals in the Asia-Pacific region. Photo Credit: TTG Asia Media.

As one of the rainiest months of the year, September is a relatively quiet month. However, there are a couple of holidays and important travel-related trade fairs.

IT & CMA Asia – 26 to 28 September 2023

IT& CMA Asia presents unparalleled networking opportunities for MICE professionals in the Asia-Pacific region. Photo Credit: TTG Asia Media.

IT & CMA Asia – Incentive Travel & Conventions, Meetings – is a leading trade fair for MICE professionals, a.k.a. meetings, incentives, conferences, and exhibitions. There will more than 900 exhibitors. And tens of thousands of attendees are expected.

Bangkok Convention Centre (BCC) – CentralWorld, 999/99 Rama 1 Road, Pathumwan, Bangkok, Thailand.

Future Trade Fair Dates

  • 2024 -24 to 26 September
  • 2025 – 23 to 24 September


CTW Asia Pacific – 26 to 28 September 2023

Explore new destinations, products and services in the Asia Pacific. Photo Credit: TTG Asia Media.

Running concurrently with IT & CMA Asia, CTW Asia Pacific – Corporate Travel World Asia Pacific – is an important conference for corporate travel management professionals in the Asia Pacific region. To clarify, it aims to promote best practices in the travel and entertainment sector.

Bangkok International Trade & Exhibition Centre (BITEC)
8 Bangna-Trad Road (Km.1), Bangna, Bangkok, Thailand.

Future Trade Fair Dates

  • 2024 -24 to 26 September
  • 2025 – 23 to 24 September


Mahidol Day – 24 September 2023

Prince Mahidol is considered the Father of Modern Thai Medicine.

The grandfather of His Majesty King Rama X, Prince Mahidol is honoured as the Father of Modern Thai Medicine on Mahidol Day.

Mahidol was the father of King Ananda Mahidol (Rama VIII) and King Bhumibol Adulyadej (Rama IX) of Thailand, and the paternal grandfather of King Vajiralongkorn (Rama X).

Thai National Flag – 28 September 2023

The National Flag of Thailand.

Flag Day was established in 2016 to celebrate the adoption of the national flag of Thailand by King Vajiravudh (Rama VI) in 1917.

Full Moon Party – 29 September 2023

Full Moon Party at Haad Rin Sunris Beach on Koh Phangan, and island near Koh Samui. Photo Credit: Per Meistrup.

The Full Moon Party is held on the beach of Haad Rin every month on the night of the full moon.

DJs play a variety of musical styles including trance, dubstep, reggae, and techno. Jugglers, fire-eaters, and fireworks add drama to the all-night event.

Haad Rin is crescent shaped beach located on the island of Ko Pha Ngan. It can be reached by boat from Koh Samui, an island off the coast of Southern Thailand.

Koh Samui is 293 miles (471 kilometres) south of Bangkok. Because the drive takes nearly 10 hours, air travel is recommended,. The flight takes just over one hour.


If You are visiting Thailand

Check out these tips on how to be police in the Land of Smiles.

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