Thailand Tours in September 2025
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10 best Thailand trips in September 2025
Compiled by
NadineThailand travel expert at TourRadar
- Thai Intro 12 Day
- River Kwai & Ancient Thai Kingdoms
- Bangkok and Ancient Capitals, Small Group Tour
- Incredible Thailand
- Essential Thailand: Bangkok and Phuket Adventure in 7 Days - Private Tour
- Thai Intro + Dive
- 9-Day Thai Island Hopping Adventure - Private tour
- Bangkok & Barcelo Coconut Phuket
- Bangkok & Central Thailand in Style – Infinity Pools, River Kwai Lux Cabin & Beach Lux Resort
- Thailand - Bangkok, White Temple & Pool Oasis
Thai Intro 12 Day
901 Reviews by TourRadar travelers“My group leader Emma made the whole trip super enjoyable and a stress free time. Will be recommending this trip to everyone.”
Sophie, traveled in May
Duration 12 days Destinations Bangkok, Khao Sok National Park, Ko Pha Ngan, Ko Phi Phi Age Range Ages 18-39 Operator INTRO Travel September departure dates
See All Departure Dates19 Sep, 2025 2 spaces left 25 Sep, 2025 3 spaces left From
- NZ$2,149
River Kwai & Ancient Thai Kingdoms
13 Reviews by TourRadar travelers“Very enjoyable in all respects.”
Ruth, traveled in September
Duration 3 days Destinations Bangkok, Ayutthaya, Kanchanaburi Age Range All Ages Welcome Operator Intrepid Travel September departure dates
28 Sep, 2025 9 spaces left From
- NZ$970
Bangkok and Ancient Capitals, Small Group Tour
12 Reviews by TourRadar travelers“Packed with exciting places to see and experience. The temples and pagodas we saw were very interesting.”
Rocky, traveled in December
Duration 8 days Destinations Bangkok, Ayutthaya, Kamphaeng Phet, Lampang, Chiang Mai, Lamphun, Sukhothai, Lopburi Age Range Ages 10+ Operated in English, German, Italian, French, Spanish Operator Destination Services Thailand From $1,623
10% Off- NZ$1,461You save $162
Incredible Thailand
4 Reviews by TourRadar travelers“Our trip was just incredible. We had the best time.”
Elias, traveled in February
Duration 16 days Destinations Bangkok, Chiang Mai, Doi Inthanon, Surat Thani, Khao Sok National Park, Krabi, Ko Phi Phi, Phuket Age Range All Ages Welcome Operator Vio Travel September departure dates
See All Departure Dates19 Sep, 2025 10 spaces left 20 Sep, 2025 10 spaces left From
10% Off- NZ$1,883
Essential Thailand: Bangkok and Phuket Adventure in 7 Days - Private Tour
3 Reviews by TourRadar travelers“Their meticulous attention to every aspect, profound expertise, and utmost professionalism all combined to ensure a smooth and rewarding travel adventure.”
Mladen, traveled in April
Duration 7 days Destinations Bangkok, Phuket Age Range All Ages Welcome Operated in English, German, Italian, Portuguese, French, Spanish, Chinese, Dutch, Russian Operator Realistic Asia September departure dates
See All Departure Dates19 Sep, 2025 10+ spaces left 20 Sep, 2025 10+ spaces left From $3,350
55% Off- NZ$1,507+$539 local paymentsYou save $1,842
Thai Intro + Dive
10 Reviews by TourRadar travelers“The actual diving side was amazing and really interesting.”
GwilymJones, traveled in September
Duration 13 days Destinations Bangkok, Khao Sok National Park, Ko Pha Ngan, Koh Tao Age Range Ages 18-39 Operator INTRO Travel September departure dates
See All Departure Dates19 Sep, 2025 2 spaces left 25 Sep, 2025 3 spaces left From
55% Off- NZ$2,499
9-Day Thai Island Hopping Adventure - Private tour
1 Review by TourRadar travelers“Each planned tour was fun and adventurous, the people who ran the tours were friendly, funny and knowledgeable.”
Tarra, traveled in November
Duration 9 days Destinations Phuket, Ko Phi Phi, Krabi Age Range All Ages Welcome Operated in English, German, French, Spanish Operator Realistic Asia September departure dates
See All Departure Dates19 Sep, 2025 9 spaces left 20 Sep, 2025 9 spaces left From $4,306
55% Off- NZ$1,938+$538 local paymentsYou save $2,368
Duration 11 days Destinations Bangkok, Phuket Age Range All Ages Welcome Operator Vio Travel September departure dates
See All Departure Dates19 Sep, 2025 10 spaces left 20 Sep, 2025 10 spaces left From
55% Off- NZ$2,132
Duration 10 days Destinations Bangkok, Ayutthaya, Kanchanaburi, Hua Hin Age Range All Ages Welcome Operated in English, German Operator Vio Travel September departure dates
See All Departure Dates19 Sep, 2025 10 spaces left 20 Sep, 2025 10 spaces left From
55% Off- NZ$2,660
Duration 11 days Destinations Bangkok, Chiang Rai, Chiang Mai, Phuket Age Range All Ages Welcome Operator Vio Travel September departure dates
See All Departure Dates19 Sep, 2025 10+ spaces left 20 Sep, 2025 10+ spaces left From
55% Off- NZ$2,248
What people love about Thailand Tours in September
Hellfire Pass Museum but it was not Sumeth’s fault. We appreciated that he took us to the night market for dinner the second night. Sumeth did an excellent job as our tour guide and we highly recommend him. Claire and Philip Fisher
River Kwai & Ancient Thai Kingdoms
- Thai Experience
I Attended the Thai Experience tour in December of 2017. The itenerary was great with a good mixture of pre-planned activities and down time. Jack an Adam, our guides, were awesome. They were knowledgable and professional. It genuinely was their mission to ensure everyone had a great time and got what they wanted out of the trip. This isn't just a job to them! I would highly recommend this trip in particular for anyone wanting to see Thailand and company in general to anyone wanting to see any of their destinations either as a group or solo traveller. Cheers for a great time in Thailand!
- Thai Intro + Dive
Had an amazing Time! Well organised and had lots of fun with all the People on the Tour!
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.