Top 5 Must-Visit Places in Thailand in September You Can’t Miss
September in Thailand is like opening a treasure chest.Top 5 Must-Visit Places in Thailand in September
The rains are tapering off, the crowds are thinner, and prices drop to their friendliest levels.
Many travelers don’t realize this month is one of the most rewarding times to explore. From golden temples in Chiang Mai to breezy shores in Koh Samui, you’ll see a side of Thailand that feels both magical and peaceful. Add in the Thailand Digital Arrival Card or TDAC and your journey gets even smoother.

Why TDAC Matters Before Visiting Thailand
Imagine flying all the way to Bangkok, only to get stuck in an extra-long immigration queue because you didn’t fill in your digital arrival card. That’s where Thailand Digital Arrival Card steps in.
This simple form has replaced the old TM6 paper slip, making entry faster and greener. You’ll need details like passport number, flight info, and your first-night hotel in Thailand. Yes, the rule says: always list your first-night accommodation — hostel, hotel, or Airbnb — right inside TDAC.
Pro Tip: Submit your TDAC no later than 72 hours (three days) before arrival. Many people forget this timeline and risk a delayed entry.
How to Plan Your Trip with TDAC
Here’s your roadmap.
Step 1: Submit TDAC on the official portal — never on a scam site.
Step 2: Screenshot or print the QR code; don’t rely only on your phone battery.
Step 3: Choose your September destinations wisely, balancing mild weather with easy TDAC use at airports and ports.
This way, you save time at immigration and maximize your travel joy.
Key Features Table
| Feature | Simple Explanation |
|---|---|
| Digital Form | Like a mini online diary about your trip |
| Passport Details | Where you type your name & number, easy peasy |
| Flight Info | Which plane brings you to Thailand |
| First Night Stay | Hotel or hostel address goes here |
| Purpose of Visit | Fun holiday, school study, or work trip |
| Submission Time | Do it within 72 hours before flying |
| QR Code | A magic ticket you show at the airport |
| Safety | Only use the official TDAC portal, not fake ones |
1. Koh Samui — September’s Tropical Escape

A. Why Visit Koh Samui in September?
Unlike other parts of Thailand, Koh Samui enjoys milder weather this month. The island’s beaches like Chaweng are calm, making it perfect for families and honeymooners.
B. TDAC Travel Tip for Samui
If flying directly to Koh Samui airport, double-check your TDAC flight details. Many travelers connect through Bangkok or Phuket — don’t forget to list your final arrival port.
2. Chiang Mai — Temples & Northern Breeze

A. The Magic of Chiang Mai in September
Rain brings fresh greenery to the mountains. Temples like Wat Phra Singh feel serene without big tourist groups. Trekking trails sparkle with waterfalls.
B. TDAC Guidance for Chiang Mai Arrivals
You’ll likely land in Bangkok first, then transfer to Chiang Mai. Always enter the hotel address in Chiang Mai in your TDAC, not Bangkok, unless that’s your actual first night.
3. Bangkok — Vibrant Capital Energy

A. Why Choose Bangkok in September
Shopping centers like MBK and Siam Paragon welcome you away from the rain. The Grand Palace shines even on cloudy days.
B. TDAC Best Practices for Bangkok
Bangkok is the top entry hub, so immigration officers are used to TDAC QR codes. Keeping a printed copy helps if airport Wi-Fi fails.
4. Koh Lanta — Rainy-Season Serenity

A. Offbeat but Rewarding
September is quiet in Koh Lanta. Resorts are cheaper, and you can have long beaches almost to yourself. Perfect for digital nomads seeking peace.
B. TDAC Notes for Ferry Arrivals
Most visitors arrive via Krabi or Phuket first. Enter that airport in your TDAC, not the ferry port, to avoid confusion.
5. Hua Hin — Easy Coastal Gateaway

A. Why Hua Hin Shines in September
Close to Bangkok, Hua Hin is a favorite weekend escape. You’ll find night markets, royal palaces, and golf courses less crowded.
B. TDAC Checklist for Hua Hin
Since most arrivals are through Bangkok, your TDAC should list your Bangkok stay (if any) before you continue to Hua Hin.
Benefits of Using TDAC Correctly
- Faster immigration — yes, TDAC does speed things up.
- No need for the old TM6 form.
- Safer, avoids handling paper forms during health-conscious travel.
- Each family member, even children, needs their own submission. Don’t skip!
And remember: always avoid fake TDAC websites and scams. Only use the official portal linked from Thai embassies or airlines.
Use Cases: Who Needs TDAC Most
- Students — must list university hostels or private housing in address fields.
- Business Travelers — fill a new TDAC each arrival, but save your template for speed.
- Elderly Travelers — family members can help fill the form, but print copies as backup.
- Families — every child needs their own form, even infants.
Check out here TDAC for specific groups like students, elders and frequent visitors to Thailand.
FAQs
Conclusion
Traveling in September brings you the best of Thailand — cooler vibes, fewer crowds, and amazing deals. With the Top 5 Must-Visit Places in Thailand in September, from beaches to temples, you’re set for an unforgettable journey.
Just don’t forget your TDAC Thailand steps: submit 72 hours before, use the official site, and carry that QR code like a golden ticket.
Ready to pack your bags? Thailand in September is waiting with open arms
