Ko Jam

Island

Small island near Krabi with low‑key beaches and bungalows; visitors come for quieter beaches, swimming and renting scooters to explore coastal hamlets.

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In this guide

Ko Jam essentials

Address: Ko Jum (Koh Jum), Krabi Province, Thailand
Hours: Open 24 hours
Admission: Free (public island)

About Ko Jam

Ko Jam, also spelled Ko Jum, is a small island in Krabi province on Thailand’s Andaman coast. It is a low-density island with villages, sandy bays and basic guesthouses rather than large resort developments.

Visitors come for relaxed beach time, local seafood and simple island life; transportation is typically by longtail boat from nearby mainland piers and neighboring islands. The island’s beaches and coastal settlements form the main visitor attractions.

Ko Jam has developed as a quieter alternative to busier resort islands in the region, retaining village structures and small-scale tourism infrastructure. The island economy combines fishing, small-scale tourism and services for visitors.

Ko Jam sits between the Krabi mainland and several island groups in southern Thailand’s Andaman Sea, accessible by short boat trips from coastal piers in Krabi province.

  • Low-key island experience: Quiet and lower-density compared with nearby resort islands, offering simple guesthouses and a village atmosphere.
Things to Do
When to Go

Best Time to Visit Ko Jam

Go to Ko Jam during the dry season (November-April) for the most reliable weather and sea conditions.

Dry season (best time)
Nov-Apr · 24-33°C
Warm, mostly sunny weather and calmer seas - ideal for beaches, snorkeling and smooth boat transfers.
Monsoon / wet season
May-Oct · 24-31°C
Heavier rains and choppier seas; some boat services may run less frequently and visibility for diving/snorkeling can drop.

Weather & Climate near Ko Jam

Climate
Air Quality: AQI 53 Moderate
Temperature & Rainfall
Temperature Range
32°
Warmest Month
24°
Coldest Month
Getting There & Around

How to Get to Ko Jam

Ko Jam (Ko Jum, Krabi province) is served by regular longtail-boat services from Krabi Town and Ao Nang. Travel overland to Ao Nang or Krabi Pier by taxi, songthaew or local transfer from Krabi airport or Krabi bus station, then board a scheduled or charter longtail to Ko Jum; the boat landings on Ko Jum are a short walk from the beach bungalows and piers.

Tips for Visiting Ko Jam

  • Use the public longtail/ferry connections from Ao Nang, Krabi town or Koh Lanta and aim for an early arrival - boats run throughout the day but early ferries leave you with the quietest beaches and more time to explore the island interior.
  • Explore the villages along the west coast rather than sticking to the main beach; many visitors miss the local fishing communities, small temples and inland lanes that give a truer sense of island life.
  • Avoid the mid‑day crowd by planning at least one overnight stay in a beachfront bungalow - Ko Jam is significantly quieter after the daytrippers leave, and homestays make arranging local boat rides or scooter hires easier.