Thailand remains the world's go-to destination for first-time travellers and seasoned backpackers alike. The combination of extraordinary street food, ornate temples, world-class beaches, and genuinely warm hospitality is unmatched at this price point. And in summer 2026, the Gulf of Thailand islands (Ko Samui, Ko Phangan, Ko Tao) are at their best: dry, sunny, and less crowded than the peak winter season.
Here's how to stay connected throughout your Thailand adventure with an eSIM.
Why Use an eSIM in Thailand?
Thailand has surprisingly strong mobile coverage across its tourist regions. The major networks, AIS, DTAC (now True Move), and NT, all operate robust 4G LTE networks. For travellers, an eSIM is a much smarter option than:
Buying a tourist SIM at the airport (often slow queues, confusing choices)
Using home carrier roaming (can cost $10+ per day)
With a Thailand eSIM from Which eSIM, you get affordable local data rates activated from your phone in minutes.
Find Thailand eSIM deals on Which eSIM
How Much Does a Thailand eSIM Cost?
Thailand is one of the cheapest eSIM destinations in the world.
Plan | Data | Validity | Approx. Cost |
Thailand 5GB | 5GB | 30 days | ~$3 |
Thailand 15GB | 15GB | 30 days | ~$6 |
SE Asia Regional | 10GB | 30 days | ~$10 |
Browse current Thailand eSIM deals at whicesim.com
Things to Do in Thailand in Summer 2026
Bangkok
Bangkok is one of the world's great cities. Though the hustle and bustle can feel overwhelming for some on first arrival, it's completely addictive once you find your footing.
Wat Phra Kaew & Grand Palace: Thailand's most sacred site and most spectacular architectural complex. Dress modestly (shoulders and knees covered). Entry ฿500.
Wat Arun (Temple of Dawn): A riverside temple best admired from across the Chao Phraya or at sunset from its towers. Entry ฿100.
Chatuchak Weekend Market: One of the world's largest markets, with 15,000 stalls selling everything from vintage denim to live animals. Brilliant for Thai street food and gifts.
Chinatown (Yaowarat): Bangkok's chaotic and delicious Chinatown, best visited in the evening when food stalls line the streets.
Muay Thai at Rajadamnern Stadium: Attending a real Muay Thai match is one of Bangkok's most memorable experiences. Entry from ฿1,000.
Chiang Mai
Chiang Mai is Thailand's cultural capital, a city of over 300 temples surrounded by jungle and mountains.
Doi Suthep Temple: A golden temple on the mountain above the city, reached by a 306-step staircase. Best visited early morning. Entry ฿30.
Thai cooking class: Chiang Mai has some of Thailand's best cooking schools. A half-day class including a market tour runs about $25–35.
Night Bazaar & Sunday Walking Street: Two of Thailand's best night markets, packed with crafts, clothing, and street food.
Elephant sanctuary: Several ethical sanctuaries outside Chiang Mai let you spend the day with rescued elephants. From $70 for a half-day experience.
Doi Inthanon National Park: Thailand's highest peak, accessible by road, with waterfalls and cool air. A welcome escape from the heat.
Gulf Islands (Ko Samui, Ko Phangan, Ko Tao)
Summer is the best time to visit the Gulf of Thailand islands — the Andaman coast (Phuket, Krabi) gets heavy monsoon rains, while the Gulf side stays mostly sunny.
Ko Tao: Thailand's best diving destination. A PADI Open Water course here (including dives, instructor, all equipment) costs just $300–350, among the cheapest in the world.
Ko Phangan: Famous for the Full Moon Party (15,000+ people on the beach under the full moon), but also has beautiful, quiet beaches like Haad Rin Nok and secluded Bottle Beach.
Ko Samui: The most developed of the three, with excellent restaurants, luxury resorts, and the iconic Big Buddha. Best base for day trips.
Ang Thong National Marine Park: A stunning archipelago of 42 islands accessible by speedboat from Ko Samui. Kayaking through sea caves and lagoons is the highlight.
Practical Tips for Thailand 2026
Currency: Thai Baht (฿). ATMs are widely available but charge foreign transaction fees (~฿200/withdrawal). Currency exchange booths offer better rates.
Dress code: Cover shoulders and knees when entering temples. Many have wrap skirts available to borrow.
Scams: Be aware of common tourist scams: "the temple is closed today" (leading to a tuk-tuk tour), overpriced tuk-tuks, and gem shop kickbacks. Use Grab (the Asian Uber) for transparent, metered fares for transport.
Spice levels: Thai spice levels are not for the unprepared. When ordering food, “mai phet” means not spicy, “phet nit noi” means a little spicy, and “phet mak” means very spicy.
With unforgettable food, and some of the world's best beaches, visiting Thailand in summer 2026 can deliver extraordinary value. A Thailand eSIM from Which eSIM is your cheapest, easiest connectivity option from arrival to departure.
Find the best Thailand eSIM deal at whicesim.com. For more ideas on where to travel to this summer, what to do and the best eSIM deals at each location, check out this article.
