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Guam is the largest island in Micronesia and an unincorporated territory of the United States, which makes it an unusual hybrid: American infrastructure, currency and phone networks wrapped around indigenous CHamoru culture and three centuries of Spanish colonial history, set on a tropical Pacific island four hours from Tokyo.
Most visitors base themselves in Tumon, a crescent bay lined with hotels, duty-free malls and restaurants that has long drawn Japanese and Korean holidaymakers. Beyond it the island opens up: Two Lovers Point on the northern cliffs, the Spanish-era bridges and Latte Stone Park in Hagåtña, the war relics and jungle of the southern villages, and dive sites including the Blue Hole and a Japanese freighter resting on top of a German cruiser in Apra Harbor.
The climate is warm and humid year-round, with a drier season from December to June and a wetter, typhoon-prone stretch from July to November. Guam is compact enough to circle in a day, and a rental car is the practical way to see anything outside Tumon.
Capital
Hagåtña; Tumon is the main hotel district
Population
~172,000
Area
544 km²
Time Zone
Chamorro Standard Time (UTC+10), no daylight saving
Currency
US dollar (USD)
Languages
English and CHamoru, both official
Main Airports
GUM (Antonio B. Won Pat International)
Visa
US territory, so US entry rules apply; the Guam-CNMI Visa Waiver Program admits several additional Asian nationalities
Best For
Beaches, diving, duty-free shopping, WWII history, watersports
Typical Cost Level
Moderate to expensive
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Guam is a US territory, so United States entry rules apply: Visa Waiver Program nationals need an approved ESTA, and everyone else needs a US visa. Guam also operates its own Guam-CNMI Visa Waiver Program, which admits several additional Asian nationalities for short visits to Guam and the Northern Marianas only, not to the mainland United States. Rules differ by passport, so check yours before booking.
December to June is the dry season, with the most reliable sunshine and the calmest water for diving and snorkelling. July to November is wetter and falls within the western Pacific typhoon season, when storms can close the airport for a day or two. Temperatures sit around 28 to 31C all year and humidity is consistently high.
Not if you plan to stay in Tumon, where the hotels, beaches, restaurants and shopping are all walkable and a tourist shuttle loops the strip. For anything else, yes. Public transport across the rest of the island is sparse, and the southern villages, Two Lovers Point and the war sites are far easier with a rental. Most foreign licences are accepted for short visits and driving is on the right.
Three to four days covers Tumon Bay, a southern loop drive taking in Talofofo Falls and the coastal villages, and either a diving day at the Blue Hole and Apra Harbor wrecks or a trip to Ritidian Point on the northern tip. Add days if you are treating it as a beach and shopping break, which is how much of the Japanese and Korean market uses the island.
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