Lesser Sunda Islands

Islands Indonesian island chain stretching east of Java

The Lesser Sunda Islands (Bali, Lombok, Flores, Timor and others) span eastern Indonesia; tourists travel for surf and dive spots, volcanic treks, Komodo National Park and diverse island cultures.

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Banta island in Indonesia - 2013-08-30.jpg
Cliff coast of one of the Lesser Sunda islands in Indonesia.jpg
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Lesser Sunda Islands after Cyclone Serjoa (MODIS 2021-04-28).jpg
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The Lesser Sunda Islands are an island chain in southern Indonesia stretching east from Bali toward Timor and forming part of the greater Sunda Archipelago. The group includes well-known islands such as Lombok, Sumbawa, Flores, Sumba and Timor, plus numerous smaller islets.

The islands are predominantly volcanic and range from high, rugged volcanic peaks to low coral islands; many have active or dormant volcanoes and a mix of dry monsoon and wet tropical climates. Marine biodiversity is high around the islands and the region contains several important national parks and protected marine areas.

Human settlement, agriculture and inter-island trade have shaped distinct local cultures on each major island; tourism has grown especially on Lombok and parts of Flores. Transport between islands is by ferry and air services linking the main population centres.

Geographically the chain lies east of Bali across the Lombok Strait and extends roughly to Timor, forming part of eastern Indonesia and separating the Java Sea and Indian Ocean to the south from the Flores Sea to the north.

  • Biogeography: The island chain lies within the biogeographical zone Wallacea where Asian and Australasian flora and fauna mix, producing high biodiversity and many endemic species.

What to See #

  • Lombok: Lombok - volcanic island east of Bali known for Mount Rinjani, beaches and cultural differences from Bali.
  • Flores: Flores - island containing Komodo National Park (western Flores and neighbouring islands) and known for rugged landscapes and Kelimutu volcanic lakes.
  • Sumbawa and Sumba: Sumbawa and Sumba - larger islands east of Lombok and Flores with distinct ecosystems and cultural groups, including beaches and inland plains.
  • Timor: Timor (West Timor within Indonesia) - the largest island in the group, shared with the sovereign state of Timor-Leste to the east.
Lesser Sunda Islands
Lesser Sunda Islands (Nusa Tenggara), Indonesia
-9.0000, 120.0000

How to Get to Lesser Sunda Islands #

The Lesser Sunda Islands are reached from Bali (Ngurah Rai/Denpasar Airport) as a regional hub. From Bali you can continue east by frequent domestic flights to Lombok (Praya), Sumbawa, Flores (Labuan Bajo) and Timor, or travel by ferry: regular ferry routes run from eastern Bali (Padangbai/Lembar) to Lombok and onward inter-island ferries connect Lombok-Sumbawa-Flores.

Internal travel between islands is by domestic flights, ferries or local boats; schedules and crossing times vary by route and island.

Tips for Visiting Lesser Sunda Islands #

  • For the best weather and sea conditions across the Lesser Sunda Islands (Nusa Tenggara), travel in the dry season (roughly April-October) when inter-island boat and flight services are most reliable.
  • Inter-island connections rely on a mix of small planes and ferries with limited schedules - book flights and ferries in advance, and allow extra travel time for weather-related delays when island-hopping beyond Bali and Lombok.
  • If you want fewer crowds, skip the most-visited hubs (southern Bali, central Lombok) and head to lesser-touristed islands such as Sumbawa, Sumba or Flores-accommodation and services are more limited, so pre-booking is recommended.

Best Time to Visit Lesser Sunda Islands #

For the Lesser Sunda Islands, the April-October dry season is generally the best time for outdoor activities, hiking and sea travel.

Dry season (best time)
April-October · ~24-30°C (varies by island and elevation)
Widespread dry weather, lower humidity and calmer seas make island-hopping, beach time and hiking (including volcano trails) most reliable.
Wet season
November-March · ~24-32°C
Higher rainfall, humidity and occasional storms - some ferry and flight schedules may be disrupted and inland trails can be muddy.

Weather & Climate near Lesser Sunda Islands #

Climate
Temperature & Rainfall
Temperature Range
32°
Warmest Month
22°
Coldest Month
Monthly Conditions

January

Weather

2.5
UV Index
Extreme
12.5h daylight

February

Weather

2.7
UV Index
Extreme
12.3h daylight

March

Weather

2.6
UV Index
Extreme
12.0h daylight

April

Weather

2.4
UV Index
Extreme
11.8h daylight

May

Weather

2.1
UV Index
Extreme
11.6h daylight

June

Weather

1.8
UV Index
Very High
11.5h daylight

July

Weather

1.9
UV Index
Very High
11.5h daylight

August

Weather

2.3
UV Index
Extreme
11.7h daylight

September

Weather

2.6
UV Index
Extreme
11.9h daylight

October

Weather

2.7
UV Index
Extreme
12.2h daylight

November

Weather

2.7
UV Index
Extreme
12.4h daylight

December

Weather

2.5
UV Index
Extreme
12.5h daylight

Nearby Attractions to Lesser Sunda Islands