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Fergusson Island

The largest of the D'Entrecasteaux islands, mountainous and volcanic, with the Dei Dei hot springs and geysers.

Updated 1 September 2026

Typeisland
WhereMilne Bay Province
Nearest cityAlotau
Best seasonMay to October
Time to allowTwo to four days
Getting thereBy boat from Alotau, several hours, or light aircraft
EntryFree; guides and village arrangements

Fergusson is the largest of the D'Entrecasteaux group north of Milne Bay, a mountainous volcanic island rising to over two thousand metres with forest, hot springs and villages around the coast. The Dei Dei springs near Deidei on the western side are the feature: a field of boiling pools, mud, steam vents and geysers that spout intermittently, with the ground crusted and coloured by minerals and hot enough to cook food, which villagers do. Guides from the village walk visitors through the field. The island is also part of the kula ring, the ceremonial exchange of shell valuables that circulates between the islands of the Massim region. Access is by boat or small aircraft from Alotau.

What you'll find

  • The Dei Dei springs - the boiling pools, mud and intermittent geysers.
  • Cooking in the springs - the village use of the hot ground.
  • The volcanic island - the forested mountains and coast.
  • Kula connections - the island's place in the shell exchange network.

When to go

May to October for the calmest crossings and driest walking; the wet season makes both difficult. Visits to the springs are guided from the village and arranged locally.

Practical notes

Access is by open boat over several hours or by small aircraft, both weather-dependent. Accommodation is village guesthouses with no facilities. The spring field is genuinely dangerous underfoot and a guide is essential. Geysers are intermittent and may not perform.

Nearby

Alotau lies south; Normanby and Goodenough are the other islands of the group.

Key facts

Area1,437 km² (555 sq mi)
Length65 km (40 mi)
Location9.5175° S, 150.6750° E · map

Source: Wikidata, item Q783083, read on 18 October 2026.

What to pack for Fergusson Island

Chosen from what this place is for. Tap a kit for the full checklist.

  • Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
  • Swimwear - Needed at most public thermal pools; some traditional baths are nude and single-sex. Find on Amazon
  • Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
  • Quick-dry towel + flip-flops - For wet changing areas and hot poolside stone. Find on Amazon

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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.

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