Koh Lanta is the Andaman coast alternative that Phuket and Krabi veterans often graduate to. Its long beaches are never completely empty in peak season, but the scale of development is dramatically lower than Phuket — there are no high-rise hotels, no Bangla Road-style strip, and no constant pressure from touts. December marks the start of its finest four months.
Weather in December
Koh Lanta faces west into the Andaman Sea, giving it the same dry season timing as Phuket and Krabi. December is the first full month of settled weather after the southwest monsoon, and conditions improve steadily through the month.
- Temperatures: 30–32°C highs, 22–24°C overnight
- Rainfall: 50–80mm for the month, spread across 3–5 days
- Sea conditions: Calm to light swells; excellent for kayaking, snorkeling, and diving
- Sea temperature: Around 28–29°C
- Visibility: 15–20m in the marine park, improving toward January
Early December can occasionally see residual showers from the northeast monsoon circling around the peninsula, but by mid-December conditions are reliably good. January is the driest and most consistent month, but December is genuinely excellent — particularly from December 10 onward.
Beaches on Koh Lanta
Long Beach (Hat Khlong Dao)
The most accessible beach on the island — 4km of sand starting 3km south of the ferry pier at Ban Sala Dan. Wide, flat, and calm December seas make it ideal for swimming. The main accommodation strip runs parallel to the beach, with a range from budget bungalows to mid-range beach resorts. Sunset views across to Koh Phi Phi are exceptional from this beach.
Phra Ae Beach (Long Beach 2)
South of Khlong Dao, Phra Ae is narrower but slightly quieter with more established beach bars and a better selection of mid-range restaurants. The Lanta Beer House and Same Same But Different bar are the long-standing evening spots here. Good snorkeling on the reef at the southern end in December conditions.
Klong Nin Beach
Further south again — less development, more local fishing boats, and one of Koh Lanta’s best collections of beachfront restaurants. December sunsets from here are spectacular. The Half Moon Bay resort area at the southern end has some of Lanta’s better accommodation options.
Bamboo Bay and Kantiang Bay
At the southern end of the island, both bays require a motorbike or scooter to reach but offer the island’s most pristine conditions. Kantiang Bay has good snorkeling directly from the shore. Bamboo Bay is a protected cove with calm, clear water and a single beach operation.
Koh Lanta Marine National Park
The national park islands — Koh Rok Nai, Koh Rok Nok, Koh Haa, and Koh Ngai — are accessible by day boat from Koh Lanta and represent some of the Andaman’s best diving and snorkeling conditions. December is the first month of full visibility after the monsoon, and Koh Haa in particular has drop-offs, swim-throughs, and coral gardens at 5–30m depth with consistent 15–20m visibility.
Day trips to the marine park run from Ban Sala Dan pier in the north of the island. Browse snorkeling and dive day trips from Koh Lanta on GetYourGuide. Snorkeling day trips (including equipment, lunch, and national park fee) cost approximately 1,500–2,200 THB per person. Dive trips to Koh Haa cost around 3,500–4,500 THB for a two-dive day including equipment. Book with PADI-certified dive shops — several operate from the main Sala Dan area.
Getting around Koh Lanta in December
Koh Lanta’s main island (Koh Lanta Yai) runs 30km from north to south. Getting between beaches requires either a scooter (350–450 THB/day rental) or negotiated songthaew taxi (150–400 THB depending on distance). Scooter rental is by far the most practical option and is standard practice on the island.
December road conditions are good. The main road south is paved all the way to Kantiang Bay; the track down to Bamboo Bay involves 1–2km of rough surface better suited to a 125cc or above.
Where to stay in December
Koh Lanta accommodation runs cheaper than Phuket or Krabi equivalents by roughly 20–35%. Compare hotels in Koh Lanta across all budgets.
Hat Khlong Dao (Long Beach area): Widest range of accommodation and easiest access to the ferry pier. Budget bungalows from 600–900 THB/night; mid-range beach resorts from 1,800–3,500 THB; higher-end properties from 4,500 THB. Book 6 weeks ahead for Christmas and New Year week.
Phra Ae Beach: More mid-range focused, slightly better restaurant options. Rates similar to Khlong Dao.
Klong Nin and south: For travellers who want quiet and have transport. Bungalow operations from 700–1,500 THB; some excellent small boutique properties at 2,000–4,000 THB.
Sri Lanta / Kantiang Bay: The island’s most isolated option — excellent if you’re staying 5+ nights and want minimal interruption. Sri Lanta Eco Resort is the established property here; rates start at approximately 4,000 THB in peak season.
Christmas and New Year on Koh Lanta
Koh Lanta’s NYE and Christmas events are low-key compared to Phuket or Koh Phangan — which is their appeal. Beach bars along Phra Ae and Klong Nin typically set up NYE bonfires and run music until about 2–3am. The Elsewhere Bar at Klong Nin has hosted some of the better NYE parties in recent seasons.
Christmas Day sees the expat community active at several bars, and beach restaurants typically run festive menus. The atmosphere is casual and friendly rather than commercial.
Ferries and transport to Koh Lanta in December
Regular ferry services connect Koh Lanta to Krabi (Ao Nang and Krabi Town), Koh Phi Phi, and Phuket during peak season. December services run daily.
- Krabi Town to Koh Lanta: Combined minivan/ferry through passenger ferry companies, approximately 3.5 hours total travel, 400–500 THB
- Ao Nang to Koh Lanta: High-speed catamaran, approximately 1.5 hours, 600–700 THB
- Koh Phi Phi to Koh Lanta: 1.5–2 hour ferry, 350–500 THB
- Phuket to Koh Lanta: Minivan/ferry combination, approximately 3–4 hours, 600–800 THB
Check departure times locally as December schedules can shift with demand.