Kwajalein Atoll

Marshall Islands coral atoll with the world's largest lagoon and a US missile-testing base.

Kwajalein Atoll consists of 97 islands with a total land mass of just 6.5 square miles, surrounding an immense 1,100-square-mile lagoon — the largest coral atoll in the world. It is not much of a tourist draw; the biggest island is owned by the US Army and the smaller islands are not particularly interesting either. The closest thing to a tourist attraction is the possibility of diving for World War II shipwrecks.

The atoll is used by the US Army for testing intercontinental ballistic missiles fired from Vandenberg Air Force Base in California, 4,200 miles away. The tests generally occur at night, often lighting up the sky with a brilliant display of explosions, burning debris, and sonic booms.

About 3,000 Americans live on Kwajalein Island, the largest in the atoll. The island is off limits to unofficial visitors except as a transit point to neighbouring Ebeye Island, home to about 1,500 Marshallese labourers who work on Kwajalein but are not allowed to live, shop, or play there.

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Bars and Cafes

There is no civilian bar or café scene on Kwajalein Atoll. The US military base on Kwajalein Island has a recreation club available to residents and invited guests, but it is not open to independent visitors. Ebeye has no notable bar scene; alcohol availability is limited and the island's social infrastructure reflects its difficult economic circumstances.

If you are a base resident or authorised guest, the recreation facilities on Kwajalein are the extent of the options.

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Books

Day of Two Suns by Jane Dibblin (1988) — The definitive account of nuclear testing in the Marshall Islands and its catastrophic consequences for the Marshallese people. Focuses on Bikini and Rongelap atolls but provides essential context for understanding the broader US military relationship with the islands, including Kwajalein.

History of United States Naval Operations in World War II, Vol. VII: Aleutians, Gilberts and Marshalls by Samuel Eliot Morison (1951) — Morison's authoritative naval history covers Operation Flintlock, the February 1944 assault on Kwajalein, in detail. Essential reading if you want to understand what you're looking at when diving the lagoon wrecks.

Micronesia by David Stanley — Part of Moon Handbooks' Pacific series, this is the most comprehensive English-language travel guide to the region, including the Marshall Islands. Useful for planning the parts of Micronesia that are actually accessible to independent travellers.

PCT: Paradise or Purgatory? American Military Basing in the Pacific — Various academic works examine the political economy of US basing arrangements in the Pacific, of which Kwajalein is one of the most contentious examples. The Compact of Free Association, which governs the US-Marshall Islands relationship, is worth understanding before visiting.

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Day Trips

Day trips from Kwajalein are severely limited by the access restrictions that govern the atoll. You cannot simply hire a boat and explore; any movement requires authorisation. That said, for those on the base, a couple of options exist.

Ebeye Island — The ferry to Ebeye takes about 20 minutes and runs regularly. Visiting Ebeye gives you an immediate and striking perspective on the human geography of the atoll: the dense Marshallese community that exists in the shadow of the American base, with none of its amenities. It is not a comfortable tourist excursion, but it is an honest one.

Outer lagoon diving — The base dive shop arranges trips to wreck sites around the lagoon. A half-day dive trip to some of the more distant wrecks constitutes a genuine excursion, given the lagoon's scale.


If Majuro is your base (which it should be for most visitors to the Marshall Islands):

Laura Beach — The far western end of Majuro Atoll has one of the better beaches in the Marshall Islands. Accessible by taxi or rental car along the atoll road.

Arno Atoll — The nearest atoll to Majuro, with traditional Marshallese villages and good snorkelling. Day trips can be arranged through guesthouses in Majuro; the journey takes around an hour by speedboat.

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Eating Out

Independent civilian visitors cannot access Kwajalein Island, so there is no restaurant scene to speak of for tourists. Eating on the atoll depends entirely on whether you have official access to the US military base.

For those on Kwajalein, the island has military dining facilities, a small supermarket, and a convenience store. The facilities are comfortable by Pacific island standards but are intended for base residents and authorised guests, not the general public.

On Ebeye, there are basic local food stalls and small shops selling packaged goods. Options are limited and the food is simple, reflecting the difficult economic conditions on the island.

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Getting Around

Assuming you have access to Kwajalein Island, getting around is simple. The island is only about 3.5 kilometres long and very narrow; walking and cycling cover it comfortably. The base provides bicycles, and the flat terrain makes this the natural way to get around. There are no rental cars.

A small ferry connects Kwajalein to Ebeye Island, making the crossing multiple times a day. The trip takes around 20 minutes.

Beyond these two main islands, the rest of the atoll's 97 islands are only reachable by boat. The lagoon is large enough that travelling between the outer islands requires meaningful boat journeys. Boat access for base residents is available through the base marina; for anyone else, it is a moot point.

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Getting There

Kwajalein is not accessible to independent tourists. The island is a US military installation (officially Reagan Test Site, operated by the US Army), and entry requires prior official authorisation. There are no exceptions and no workarounds.

Your options for getting to Kwajalein Island:

  • US military orders: If you are active-duty military or a DoD contractor with orders to Kwajalein, travel is arranged through military channels.
  • Invited guest of a resident: Base residents can sponsor guests for visits. This requires paperwork, advance notice, and approval from base authorities — typically around a month of lead time.
  • Permitted dive charter: A small number of specialist dive operators have arrangements to bring diving groups to the lagoon. These require significant advance planning — months, not weeks — and are not guaranteed.

There is no commercial flight to Kwajalein available to the general public. The airstrip on the island receives military and contractor flights only.

The realistic alternative: If you want to visit the Marshall Islands without military connections, fly to Majuro, the capital, which is served by United Airlines from Honolulu (roughly 4.5 hours). From Majuro you can explore the southern Marshall Islands and experience Marshallese culture in a setting that is actually accessible. Kwajalein will remain out of reach.

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Things to Do

Kwajalein Atoll is not a tourist destination in any conventional sense. The main island is a restricted US military base, and access for civilians is not granted without official sponsorship. For the rare visitor who does have access — military personnel, contractors, invited guests, or divers with pre-arranged permits — the lagoon itself is the draw.

The most compelling activity is WWII wreck diving. Operation Flintlock in February 1944 left dozens of Japanese and American wrecks on the lagoon floor, and the calm, clear water makes for exceptional underwater conditions. Beyond diving, the sheer scale of the lagoon — 1,100 square miles — allows sailing, snorkelling, and fishing for those with access to boats.

Ebeye Island, a short ferry ride away, offers a stark and sobering contrast to the manicured American base: one of the most densely populated places on earth, home to the Marshallese workforce excluded from Kwajalein's facilities.

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When to Go

The Marshall Islands have a tropical maritime climate year-round, with temperatures hovering between 27°C and 30°C regardless of season. There is no cold season to avoid.

The drier, calmer months run roughly from November through April. Seas are gentler and rainfall less frequent, making this the better time for diving and any lagoon activity. The wetter season from May through October brings more frequent rain and occasional rough weather, though conditions inside the lagoon remain relatively sheltered compared to exposed ocean.

One scheduling consideration unique to Kwajalein: the US Army conducts ICBM test launches at irregular intervals, with missiles arriving from Vandenberg Air Force Base in California. Tests are not publicly scheduled. When they happen at night, the incoming warheads and their burning debris can light up the sky in a spectacular and slightly eerie display. There is no way to time a visit around these tests.

Wreck diving conditions in the lagoon are generally good throughout the year, given how protected the water is from ocean swells.