Thailand Tours in September 2025
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10 best Thailand trips in September 2025
Compiled by
NadineThailand travel expert at TourRadar
- 9 Days Thailand Exploration
- Thai Intro 12 Day
- Bangkok and Ancient Capitals, Small Group Tour
- Trails and Gems of Siam, Small Group Tour
- Treasures of Thailand 8 Days - Chiang Mai to South, Small Group Tour (English Only)
- 4 Day Bangkok City Break including Amphawa Floating Market & Erawan National Park
- 14 Days Island Hopping In Thailand
- Thailand Grand Tour, Small Group Tour (English Only)
- Bangkok, Golden Triangle & Phuket Beach Extension, Small Group Tour
- Bangkok to Chiang Mai Express
Duration 9 days Destinations Bangkok, Khao Sok National Park, Ko Pha Ngan, Koh Samui Age Range 2 to 90 year olds Operator Wonderful Holidays UK September departure dates
See All Departure Dates3 Sep, 2025 10 spaces left 7 Sep, 2025 10 spaces left From
- NZ$3,146
Thai Intro 12 Day
875 Reviews by TourRadar travelers“The journey led us to seeing so much and doing so much. Visit landmarks, ride boat tours, wild night outings, and beaches and sea excursions.”
Sebastian, traveled in March
Duration 12 days Destinations Bangkok, Khao Sok National Park, Ko Pha Ngan, Ko Phi Phi Age Range 18 to 39 year olds Operator INTRO Travel September departure dates
See All Departure Dates1 Sep, 2025 10+ spaces left 3 Sep, 2025 10+ spaces left From
- NZ$2,099
Bangkok and Ancient Capitals, Small Group Tour
12 Reviews by TourRadar travelers“From Bangkok to Ayutthaya, then to Chiang Mai. Especially like the Thai food market.”
Christina, traveled in August
Duration 8 days Destinations Bangkok, Ayutthaya, Kamphaeng Phet, Lampang, Chiang Mai, Lamphun, Sukhothai, Lopburi Age Range 10 to 99 year olds Operated in English, German, Italian, French, Spanish Operator Destination Services Thailand September departure dates
See All Departure Dates2 Sep, 2025 10 spaces left 9 Sep, 2025 10 spaces left From $1,631
10% Off- NZ$1,469You save $163
Trails and Gems of Siam, Small Group Tour
5 Reviews by TourRadar travelers“Amazing short trip to know one corner of THailand. I booked as well the 3 days city break in Bangkok with DS, all the pick ups and transfers were perfect.”
Leonell, traveled in January
Duration 5 days Destinations Bangkok, Ayutthaya, Kamphaeng Phet, Lampang, Chiang Mai, Lamphun, Sukhothai, Lopburi Age Range 10 to 99 year olds Operated in English, German, Italian, French, Spanish Operator Destination Services Thailand September departure dates
See All Departure Dates4 Sep, 2025 10 spaces left 11 Sep, 2025 10 spaces left From $1,369
10% Off- NZ$1,232You save $136
Treasures of Thailand 8 Days - Chiang Mai to South, Small Group Tour (English Only)
1 Review by TourRadar travelers“Great Tour minibus. Your every wish is considered.”
Frances, traveled in February
Duration 8 days Destinations Chiang Mai, Lamphun, Lampang, Sukhothai, Uthai Thani, Ayutthaya, Kanchanaburi, Bangkok Age Range 10 to 99 year olds Operator Destination Services Thailand September departure dates
See All Departure Dates4 Sep, 2025 10 spaces left 7 Sep, 2025 10 spaces left From $2,286
10% Off- NZ$2,058You save $228
4 Day Bangkok City Break including Amphawa Floating Market & Erawan National Park
1 Review by TourRadar travelers“The entire experience, including the airport transfers, hotel accommodations, each tour, and the other tour participants were all positive memories.”
Timothy, traveled in April
Duration 4 days Destinations Bangkok, Amphawa, Erawan National Park Age Range 2 to 85 year olds Operator STM Tours LLC September departure dates
See All Departure Dates4 Sep, 2025 10+ spaces left 5 Sep, 2025 10+ spaces left From $957
5% Off- NZ$910You save $47
Duration 14 days Destinations Bangkok, Khao Sok National Park, Ko Pha Ngan, Koh Tao, Phuket Age Range 2 to 90 year olds Operator Wonderful Holidays UK September departure dates
See All Departure Dates6 Sep, 2025 10 spaces left 7 Sep, 2025 10 spaces left From
5% Off- NZ$3,821
Thailand Grand Tour, Small Group Tour (English Only)
6 Reviews by TourRadar travelers“This tour includes too many visits to temples. Could iclude crossing river to Laos while at Golden Triangle.”
Kandhayalall, traveled in October
Duration 10 days Destinations Chiang Rai, Golden Triangle Park, Chiang Mai, Lamphun, Lampang, Sukhothai, Uthai Thani, Ayutthaya, Kanchanaburi, Bangkok Age Range 10 to 99 year olds Operator Destination Services Thailand September departure dates
See All Departure Dates5 Sep, 2025 10 spaces left 12 Sep, 2025 10 spaces left From $3,032
10% Off- NZ$2,729You save $303
Bangkok, Golden Triangle & Phuket Beach Extension, Small Group Tour
4 Reviews by TourRadar travelers“Very well organized.”
Thomas, traveled in January
Duration 11 days Destinations Bangkok, Damnoen Saduak, Chiang Mai, Wat Phra That Doi Suthep, Chiang Rai, Golden Triangle Park, Phuket Age Range up to 99 year olds Operated in English, German, Italian, French, Spanish Operator Destination Services Thailand September departure dates
See All Departure Dates6 Sep, 2025 10 spaces left 13 Sep, 2025 10 spaces left From $2,190
10% Off- NZ$1,971You save $219
Bangkok to Chiang Mai Express
36 Reviews by TourRadar travelers“We stayed in a hotel in the river which was lovely and got a Thai massage in another hotel in Chiang Mei.”
Natasha, traveled in January
Duration 7 days Destinations Bangkok, Kanchanaburi, Ayutthaya, Chiang Mai Age Range up to 90 year olds Operator G Adventures September departure dates
See All Departure Dates6 Sep, 2025 10+ spaces left 20 Sep, 2025 10+ spaces left From $1,819
25% Off- NZ$1,364You save $454
What people love about Thailand Tours in September
- Thai Intro 18 Day
Whether you’ve got just the 18 days for a holiday or are starting your great adventure, this trip shouldn’t be missed! I came as a solo traveller but made some of the best friends before we even walked out the airport. The 18 day trip offers so much more of the incredible country when it goes up north to Chiang Mai, you’ll be happy you didn’t miss out and you’ll be inspired to do more! Zip lining through the jungle, trekking to a beautiful overnight camp and singing songs under the stars (I can’t sing so don’t let that put you off), before water rafting your way home the next day will guaranteed blow your mind. It’s like something out of a movie right?!....RIGHT!!! And what better way to finish this mini adventure than by visiting an elephant sanctuary, covering them (and each other) in mud, playing in the water and watching them be happy in a stunning and caring environment. I was hooked on Intro Travel tours after doing Vietnam Intro last March (which I also couldn’t recommend more). The company seems to pride itself on the quality of their leaders who go above and beyond anything you would expect. We had Jack and Adam who expertly and very entertainingly, guided us through the culture, getting everyone involved day and night. Jack was great at bringing out your inner instagram model (yes boys...you too)! And Adam...oh Adam...your dancing...perhaps my highlight?! Funny and professional the whole way through! You come away from this trip with life long friends, onward travel buddies (if that’s what you’re lucky enough to be doing) and an incredible Instagram account...I mean life long memories!!!! As Shia LaBeouf once said.... JUST DO IT!
Short tour from Bangkok to chiang mai, great to see culture and sights, pim our tour guide was excellent and went over and above to ensure we all had a great time
Bangkok to Chiang Mai Express
- Best of Thailand - Feel Free Travel
Absolute amazing team couldn't ask for more.. they went out there way to make sure i was happy and fully accommodated.. I needed a few tips on what to do after the tour and Matthew went out of his way to book and add on the stuff for me totally amazing and funny I had the best time and felt sad to leave the guides behind.. I WANT A JOB!!!
What our customers ask about Thailand Tours in September 2025
What is the weather like in Thailand during September?
September brings tropical weather patterns to Thailand with regional variations. Northern Thailand including Chiang Mai sees predictable afternoon showers while Bangkok maintains temperatures between 28-32°C (82-90°F) with notable humidity. The beach areas of Phuket and Koh Samui experience intermittent heavy rainfall. Recent TourRadar travelers staying at properties like the Imperial Phitsanulok Hotel and Valia Hotel Bangkok note that brief rain spells often provide welcome relief from the heat rather than disrupting travel plans.
What are the best regions to visit in Thailand during September?
The eastern Gulf coast tends to have more stable weather during September. While the northern regions of Chiang Mai and Chiang Rai see afternoon rains they remain rich in cultural activities. Central Thailand including Bangkok offers a practical mix of indoor and outdoor experiences. Travelers report success at properties like the Imperial River House Chiang Rai where they schedule outdoor activities in the morning before typical afternoon showers.
Are there any special festivals in Thailand during September?
September marks several cultural celebrations across Thailand. When the timing aligns the Chinese Mid-Autumn Festival brings energy to Bangkok's Chinatown district. Buddhist temples host ceremonies marking the end of Buddhist Lent. Visitors staying at properties like the Imperial River House in Chiang Mai find themselves well-positioned to experience these local celebrations which offer an authentic view of Thai cultural traditions.
What are the best islands to visit in Thailand during September?
The Gulf of Thailand islands (Koh Samui Koh Phangan Koh Tao) generally offer calmer conditions while Andaman Sea islands face choppier waters. Recent visitors based at the Andakira Phuket hotel report successful snorkeling trips to Phi Phi Islands though sea conditions can require flexible scheduling. The waters around Koh Samui tend to be more consistently suitable for water activities.
How much should I budget for a Thailand trip in September?
September's shoulder season status brings reduced rates across Thailand. Standard 10-day tour packages cost between USD 1000-1500 including stays at mid-range properties like True Siam Rangnam Hotel in Bangkok. Recent travelers report finding rates at upscale properties like NA NIRAND Resort at up to 30% below peak season prices making luxury stays more accessible.
What are the accommodation options in Thailand during September?
The range spans from functional 3-star hotels to luxury 5-star resorts. Bangkok's options include the practical Isanook Bangkok and the well-appointed Century Park Bangkok. In Chiang Mai properties like Na Nirand Romantic Boutique Resort cater to various preferences. The Amari Watergate in Bangkok represents the type of property that handles rainy season well with comprehensive indoor facilities.