# Thailand island hopping guide 2026: routes and seasons > Thailand's Gulf and Andaman coasts have opposite monsoon patterns, so island hopping works year-round if you pick the right side for your dates. Source: https://viasimo.com/magazine/thailand-island-hopping-guide/ Published: 2026-04-22 Tags: thailand, island-hopping, itinerary, beaches --- Thailand's two island coasts have opposite monsoon seasons, which means there is good island weather somewhere in Thailand almost every month of the year. The Andaman side (Phuket, Krabi, Koh Phi Phi, Koh Lanta) peaks from November to April, while the Gulf side (Koh Samui, Koh Phangan, Koh Tao) stays driest from roughly January through August: pick the coast to match your dates, not the other way round. Island hopping here is genuinely easy by the standards of anywhere else in the world. Ferries, catamarans and speedboats link the major islands daily, combo tickets bolt bus and boat legs together from Bangkok, and the backpacker infrastructure is so mature that you can plan a three-island route the night before you start it. The craft is in sequencing: choosing islands that fit your pace, respecting the monsoon calendar, and leaving slack before any flight. This guide maps both coasts, lays out proven routes, explains ferry logistics and realistic budgets, and covers the connectivity realities of staying online between beaches, boats and bungalows. In this guide: - [Gulf vs Andaman: choosing your coast](#gulf-vs-andaman-choosing-your-coast) - [Classic island hopping routes](#classic-island-hopping-routes) - [Ferry logistics: booking, transfers and timing](#ferry-logistics-booking-transfers-and-timing) - [When to go: monsoons and seasons](#when-to-go-monsoons-and-seasons) - [Budget: what island hopping typically costs](#budget-what-island-hopping-typically-costs) - [Staying connected on the islands](#staying-connected-on-the-islands) - [Build your route: next steps](#build-your-route-next-steps) ## Gulf vs Andaman: choosing your coast The two coasts feel different as well as raining at different times. The Andaman is dramatic: limestone karsts, cliff-framed bays and the postcard scenery of Railay and Maya Bay. The Gulf is gentler: palm-lined beaches, a legendary dive-training scene on Koh Tao and the party calendar of Koh Phangan. | Factor | Gulf coast | Andaman coast | | --- | --- | --- | | Main islands | Koh Samui, Koh Phangan, Koh Tao | Phuket, Koh Phi Phi, Koh Lanta, Koh Lipe | | Best months | Roughly January to August | November to April | | Wettest months | October to December | May to October | | Signature scenery | Palm beaches, Ang Thong marine park | Limestone karsts, Railay cliffs | | Known for | Diving courses, Full Moon Party | Snorkelling trips, laid-back Lanta | | Main gateways | Surat Thani, Chumphon, Samui airport | Phuket, Krabi, Trang | ### Choose the Gulf if You want the cheapest dive certification in the region (Koh Tao trains tens of thousands of divers a year), a big-night beach party scene balanced by quiet north-coast beaches, or you are travelling between May and October when the Andaman is at its roughest. ### Choose the Andaman if You are travelling in the November to April window, want the karst scenery that defines Thailand in photographs, or prefer a slower circuit: Koh Lanta and Koh Yao Noi are among the most relaxed developed islands in the country. ## Classic island hopping routes Two weeks is the sweet spot for three or four islands at a humane pace. One island per three to four nights beats a new bed every night; travel days eat more energy than the timetable suggests. ### The Gulf route: Samui, Phangan, Tao Fly or take the bus-and-ferry combo to Koh Samui (3 nights) for east-coast beaches and an Ang Thong marine park day trip. Ferry 30 to 45 minutes to Koh Phangan (3 to 4 nights): party in Haad Rin if the moon is full, or head north to Haad Salad and Bottle Beach for the quiet version. Finish with 3 nights on Koh Tao for snorkelling Shark Bay or an open-water dive course, then ferry to Chumphon for the train or bus back to Bangkok. ### The Andaman route: Phuket, Phi Phi, Lanta, Lipe Start in Phuket (2 nights, old town and a beach day), take the roughly 2-hour ferry to Koh Phi Phi (2 nights) for the viewpoint and a Maya Bay snorkel trip, then continue about an hour south to Koh Lanta (3 to 4 nights) for long west-coast sunsets and the national park at the southern tip. With extra days in high season, push on to Koh Lipe, a small far-south island with some of Thailand's clearest water; ferries there typically run November to April. ### Combining both coasts It is doable in one trip: the standard link is a bus-and-boat combo between Krabi or Phuket and Surat Thani, taking most of a day door to door. Only combine coasts if you have three weeks or more; with two weeks, committing to one coast buys you far more beach time per baht. ## Ferry logistics: booking, transfers and timing Thai island transport runs on combo tickets: one booking that chains a minivan or bus to a ferry, sold online, at travel desks and at guesthouses. They are legitimate and convenient; just keep every leg's voucher accessible on your phone. ### Booking windows In high season (December to February, plus around the Full Moon Party), book major legs a day or two ahead; popular morning departures sell out. In shoulder months you can usually walk up. Schedules thin out in the low season, and some routes, such as boats to Koh Lipe, pause almost entirely on the monsoon-exposed side. ### Practicalities on the day Arrive 30 to 45 minutes before departure, since piers are chaotic and boarding stickers are handed out by route. Big backpacks go in the luggage pile, so keep valuables, passports and electronics in a daypack on your lap. If you are prone to seasickness, sit low and central, take tablets 30 minutes before boarding, and prefer larger ferries over speedboats when seas are up. ### The golden rule: never fly same-day Ferries are weather-dependent, and afternoon crossings get cancelled in rough conditions. Build a buffer night on the mainland (or on Phuket or Samui, which have airports) before any international flight. Travel insurance will not rebuild an itinerary that had zero slack in it. ## When to go: monsoons and seasons Thailand's monsoon is not a wall of permanent rain; it is a probability shift. Low-season showers often mean a two-hour afternoon downpour rather than a lost day, but seas get rough, boats get cancelled and some west-facing beaches collect debris. High season on the Andaman runs November to April: dry, calm seas, full boat schedules and peak prices from mid December to mid January. The Gulf runs on a different clock: its wettest stretch is October to December, and its long dry-ish window from January to August makes it the default summer choice for European travellers. April is the hottest month everywhere, softened by the nationwide Songkran water festival around the middle of the month. ## Budget: what island hopping typically costs Thailand remains one of the best-value beach destinations anywhere, though the famous islands now span everything from 300-baht dorms to five-star villas. As of 2026, hedged daily figures look like this: backpackers typically manage on around 1,000 to 1,800 baht per day; mid-range travellers typically spend around 2,500 to 5,000 baht; ferry legs typically run a few hundred baht each, with long combos and speedboats costing more. ### Where the money goes Accommodation is the biggest swing factor, and prices step up noticeably on Phi Phi and in peak weeks everywhere. Street food and night markets keep eating costs tiny (a pad thai or noodle soup typically costs around 60 to 100 baht); beachfront restaurants and cocktails multiply that fast. Dive courses, snorkel tours and scooter rental are the classic extras; budget them per island rather than per trip and the numbers stay honest. ## Staying connected on the islands Mobile [coverage](/glossary/network-coverage/) on Thailand's developed islands is far better than first timers expect: towns, piers and main beaches on Phuket, Samui, Phangan, Tao, Lanta and Phi Phi all have solid [4G](/glossary/4g-lte/), with 5G spreading on the bigger islands. The gaps are predictable, too: jungle interiors, remote coves reachable only by longtail, and the middle of longer ferry crossings. That coverage pattern shapes the smart setup. A prepaid Thailand eSIM from [Viasimo](/) is delivered by email instantly and installs by [QR code](/glossary/qr-code-installation/) or one tap in minutes, so you can set it up in Bangkok's airport arrivals hall, or at home before you fly, and stay on Thai networks the whole route; browse plans on the [Thailand destination page](/destinations/thailand/) and see our [best eSIM for Thailand](/magazine/best-esim-for-thailand/) breakdown for choosing a data size. Your home SIM stays active alongside it, which matters for banking codes and for anyone who needs to reach you on your usual number. A few island-specific habits pay off. Download offline maps and your ferry vouchers before boarding, because mid-sea signal is unreliable. Do not depend on resort Wi-Fi for anything important: it is frequently slow, shared and concentrated around reception. Solo travellers should keep live location sharing running on travel days; our [solo travel safety guide](/magazine/solo-travel-safety-staying-connected/) covers that setup in detail. If your data seems dead on arrival, the fix is usually a settings toggle: our [eSIM troubleshooting guide](/magazine/esim-not-working-troubleshooting-guide/) lists the checks in order, and [support](/support/) is there 24/7 if you need a human. ## Build your route: next steps Sequence the decisions: pick your month first, let the monsoon calendar pick your coast, then choose three islands and give each at least three nights. Book the first two nights and the long-haul legs, keep the rest flexible, and protect the final 24 hours before your flight with a mainland or airport-island buffer. Before departure, run your phone through the [device compatibility checker](/device-compatibility/), pick a plan from the [Thailand page](/destinations/thailand/) and install it over home Wi-Fi. You will step off the plane with maps, translation and ferry bookings already live, which is exactly the head start island hopping rewards.