Ko Jum Island

Small island with fishing villages in Phuket region

Off Krabi on the Andaman coast, Ko Jum (Koh Jum) is a low‑key island of beaches and fishing villages. Visitors seek relaxed beach stays, bungalow accommodation and fresh seafood.

Main image

Ko Jum at a Glance#

About Ko Jum#

Ko Jum (often written Koh Jum) is a small island in the Andaman Sea off the coast of Krabi Province in southern Thailand. The island is known for a quiet, low-key atmosphere with small villages and beachside bungalows rather than large resorts.

Beaches, informal beachfront restaurants and simple guesthouses are the most common visitor amenities, and the island is used for swimming, snorkeling close to shore and relaxed beach stays. Transport typically uses long-tail boats that connect the island with Krabi and nearby islands.

Historically the island has been a fishing and farming community; tourism developed later and remains on a smaller scale compared with nearby tourist hubs. There are no large resorts or major commercial developments dominating the island.

Ko Jum sits off the mainland coast of Krabi Province, positioned between the larger island groups of the southern Andaman Sea. Access is by boat from the Krabi coast and nearby islands.

  • Access: The island is low-key and predominantly served by long-tail boats from the nearby Krabi coastline and neighbouring islands, so expect basic transport links rather than regular car ferries.
  • Visitor facilities: Facilities and nightlife are limited compared with larger Andaman islands, making the island suitable for quiet beach stays and low-key accommodation options.

How to Get to Ko Jum#

Ko Jum is accessible by boat from the nearby island of Ko Lanta or from mainland piers in Krabi province. Regular longtail and speedboat transfers run during the high season; book transfers in advance during December-March.

Tips for Visiting Ko Jum#

  • Boat transfers are typically from Lanta Noi or nearby mainland piers-book transport ahead during high season.
  • Accommodation is limited compared with other Thai islands; day trips are common and convenient.
  • Bring cash-small island vendors often don't accept cards.

Best Time to Visit Ko Jum#

Best visited in the dry season (November-April) for pleasant weather and reliable boat services.

Dry season
November-April · 24-31°C (75-88°F)
Calmer seas and prime snorkeling and beach time.
Monsoon season
May-October · 24-30°C (75-86°F)
Heavy rain and rough seas reduce options for day trips and water activities.

Weather & Climate near Ko Jum#

Climate

Ko Jum's climate is classified as Tropical Monsoon - Tropical Monsoon climate with consistently warm temperatures year-round. Temperatures range from 23°C to 34°C. Heavy rainfall (2032 mm/year), wettest in September with a pronounced dry season.

Air Quality: AQI 53 Moderate
Best Time to Visit
JanuaryFebruaryMarch
Temperature & Rainfall
Temperature Range
35°
Warmest Month
21°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Excellent 23° - 32° 31° 25 mm partly cloudy 85% 1.9 m/s 2.1 extreme 11.6h
February Excellent 23° - 33° 33° 31 mm some cloud 81% 1.8 m/s 2.5 extreme 11.8h
March Very Good 24° - 34° 33° 55 mm partly cloudy 78% 2.1 m/s 2.6 extreme 12.0h
April Good 24° - 34° 34° 124 mm partly cloudy 80% 1.9 m/s 2.5 extreme 12.2h
May Acceptable 24° - 33° 34° 200 mm overcast 84% 2.3 m/s 2.1 extreme 12.3h
June Acceptable 24° - 32° 33° 190 mm overcast 86% 2.7 m/s 2.1 extreme 12.4h
July Acceptable 24° - 31° 32° 228 mm overcast 86% 2.7 m/s 2.1 extreme 12.4h
August Acceptable 24° - 31° 32° 289 mm overcast 86% 3.1 m/s 2.2 extreme 12.2h
September Acceptable 24° - 31° 31° 317 mm overcast 87% 2.4 m/s 2.2 extreme 12.1h
October Acceptable 23° - 31° 27° 292 mm overcast 87% 1.8 m/s 2.1 extreme 11.8h
November Good 23° - 30° 27° 204 mm overcast 87% 1.8 m/s 1.9 very high 11.7h
December Good 23° - 31° 27° 77 mm partly cloudy 87% 2.3 m/s 1.9 very high 11.6h