St John's Island
A quiet southern island with lagoons and trails, once a quarantine station and now a marine research base.
Updated 16 October 2026
St John's, or Pulau Sakijang Bendera, was Singapore's quarantine station for over a century, isolating arrivals with cholera and other diseases, and later a detention centre and a drug rehabilitation site. It is now quiet: lagoons, grass, trails, a beach and the buildings of a marine research laboratory. A causeway links it to Lazarus Island next door, so both are usually walked together on one ferry trip.
Background
Its old name, Sekijang or Sakijang, joins the Malay words si and kijang, the second meaning deer. According to John Crawfurd, members of the Stamford Raffles party misread that local name as St John in 1819. The Malay name later became Sekijang Bendera, bendera meaning flag, after a flagstaff that stood on the island from 1823 to 1833 before it was moved to Mount Faber. An 1892 British Admiralty chart labelled it West St John's, with today's Lazarus Island as East St John's. Covering 0.41 km², 6.5 km off the southern coast, it ranks first in size among the Marine Park islands. It sits on the Jurong Rock Formation, mixes tropical rainforest with coastal habitats and has no permanent residents.
Source: Wikipedia, "Saint John's Island"
What you'll find
- The lagoons - sheltered water on the island's northern side.
- The quarantine buildings - remains of the station that ran for over a century.
- The causeway - the link across to Lazarus Island.
- The quiet - an island with almost nobody on it on weekdays.
When to go
Year round; ferries run to a limited schedule and the last boat back matters. Weekdays are almost empty and weekends busier. Afternoon storms are common.
Good to know
Ferries run only a few times a day and missing the last one means a long problem. There are no shops and everything must be carried in. There is little shade on the open ground.
Nearby
Lazarus Island is across the causeway, and Kusu is on the same ferry route.
Key facts
Source: Wikidata, item Q3519991, read on 18 October 2026.
What to pack for St John's 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
- Strong insect repellent - DEET or picaridin; the jungle is where bites and disease risk are highest. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
- Long, light, quick-dry clothing - Covers skin from insects and sun without cooking you in the humidity. Find on Amazon
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