What kind of destination is Guam?
Guam is the largest island in Micronesia and, as an unincorporated US territory, blends American everyday life, Japanese-influenced mass tourism around Tumon Bay, and indigenous Chamorro culture with a history over 3,500 years old. The island is also one of the most important US military bases in the Pacific.
At around 549 km², Guam is the largest island in the Mariana chain; the north is flat and shaped by limestone plateaus, while the south is volcanic, hilly and more sparsely populated. Around 168,000 people live on the island.
Changeable information — entry rules, flight schedules, prices — reflects the situation as of September 2026; since 2025, the Guam-CNMI Visa Waiver Program has been gradually supplemented by an electronic travel authorization (eTA), so details may change.
Sources: Wikipedia
What kind of destination is Guam?
Guam's tourism is heavily oriented toward the Japanese, South Korean and Taiwanese markets: high-rise hotels, duty-free shopping and entertainment are concentrated around Tumon Bay. Outside this strip, a calmer, American-influenced island life appears, with a strong military presence.
Guam has been under US administration since 1898, with an interruption from the Japanese occupation of 1941 to 1944; the liberation by US troops on 21 July 1944 is celebrated annually as "Liberation Day" with a large parade in Hagåtña.
Two major military bases, Andersen Air Force Base in the north and the naval base at Apra Harbor, shape the island's economy and politics; a significant share of the land area is under military use, a subject of recurring political debate on Guam itself.
Today's population is roughly one-third indigenous Chamorro, alongside Filipinos, other Pacific and Asian groups, and mainland US citizens, many of them in military service; the island authorities' motto, Inafa'maolek ("to make good together"), sums up the aspiration for how people live together.
Sources: Wikipedia · Guam Visitors Bureau
Which places are worth visiting on Guam?
Tumon Bay is the tourist center with hotels, shopping and nightlife, while Hagåtña, the historic capital, displays latte stones and colonial buildings. The south around Humåtak and Malesso' preserves quiet villages and Chamorro traditions, and the north has limestone cliffs such as Two Lovers Point.
Tumon Bay
Tumon is Guam's tourist heart: a curved bay with high-rise hotels, duty-free shopping malls and the island's largest reef aquarium, the Fish Eye Marine Park, with an underwater observation tunnel. Most of the island's lodging capacity is concentrated here.
At the northern end of the bay, in Tamuning, lies Two Lovers Point, a cliff above the sea named after a Chamorro legend of two lovers who leapt from here rather than be separated. The lookout is considered the island's most popular photo spot.
Hagåtña and the north
Hagåtña, the official seat of government with only about 1,000 residents today, features excavated, centuries-old latte stones in the Latte Stone Park, two-piece limestone pillars on which traditional Chamorro houses once stood. The town's name derives from the Chamorro word for blood, referencing the ancestral lines of the founding families.
The island's largest town today, however, is Dededo in the north, with considerably more residents than the capital; it serves mainly as a residential and shopping area for the local population, but is of little touristic significance.
South and history
The War in the Pacific National Historical Park, the only site in the entire US National Park System dedicated to the whole Pacific theater of World War II, spans several sites, including the landing beach at Asan, where the liberation of Guam began in 1944.
In the south, villages such as Humåtak and Malesso' preserve a calmer, more traditional island life; Humåtak also marks the spot where a European ship, under Ferdinand Magellan, first landed on Guam in 1521.
In the evening, Chamorro Village in Hagåtña turns into a night market with grilled fish, live music and traditional dance; it is considered the best place to experience Chamorro cuisine and culture in a single evening.
Sources: Guampedia · Guam Visitors Bureau
When is the best time to visit Guam?
It's driest from December to June, with temperatures around 27 to 31°C, while the rainy season from July to November coincides with typhoon season. Typhoons are possible year-round, but statistically peak between late August and mid-November.
Climate of Hagåtña, Guam (2010–2024 averages)
| Hagåtña / Tamuning | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 29 | 29 | 29 | 30 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 |
| Low °C | 26 | 25 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 26 |
| Rainfall mm | 82 | 51 | 42 | 47 | 62 | 97 | 197 | 315 | 278 | 231 | 136 | 69 |
Average daily highs and lows, and monthly rainfall. Temperaturen: Mittel der täglichen Höchst- und Tiefstwerte 2010–2024 der Station APRA HARBOR GUAM (11 km, 3 m). Niederschlag: NASA POWER, Monatsmittel 2001–2020.
Guam lies in one of the most typhoon-prone zones of the Pacific; the island has a well-established warning system with "Conditions of Readiness," marking preparation stages from early warning to an imminent pass. Super Typhoon Pongsona hit Guam in December 2002, outside the actual peak season, showing that vigilance remains worthwhile year-round.
For diving and snorkeling, visibility is best in the dry season; water temperature, however, stays warm enough for water sports year-round. Anyone traveling in the rainy season should plan excursions flexibly and take local authorities' weather warnings seriously.
Humidity stays high on Guam year-round; the difference is felt mainly in rainfall, which is noticeably more frequent and intense in the summer months than during the dry season between December and June.
Sources: NOAA National Centers for Environmental Information · DeWitt Guam (based on Guam Homeland Security/Office of Civil Defense)
What do you need to enter Guam?
Swiss, German and Austrian nationals enter via the regular US Visa Waiver Program with ESTA, with stays of up to 90 days — not via the separate Guam-CNMI Visa Waiver Program (Form I-736), which allows only 45 days and applies to 12 other nationalities not eligible for ESTA. A machine-readable passport is mandatory in any case.
The Guam-CNMI Visa Waiver Program is a standalone program, not identical to the regular US Visa Waiver Program (ESTA): it applies only to 12 nationalities not eligible for ESTA (including Australia, Japan, New Zealand, South Korea, the United Kingdom), who enter with Form I-736. Swiss, German and Austrian nationals are among the 39 countries eligible for ESTA and instead enter entirely normally with ESTA. Since 2025/2026, US Customs and Border Protection (CBP) has also been introducing an electronic travel authorization (G-CNMI eTA), which is gradually replacing the I-736 paper form for the nationalities affected.
With ESTA, the permitted stay is up to 90 days and is not extendable; a later change of status is not possible. The same ESTA also applies to a subsequent trip to the US mainland. Only under the separate Guam-CNMI VWP (for the 12 other nationalities) is the stay limited to a maximum of 45 days.
The authoritative bodies are always: FDFA, Federal Foreign Office and BMEIA, as well as the official G-CNMI eTA site. Check current information before departure.
Sources: U.S. Department of Homeland Security · Federal Department of Foreign Affairs (FDFA), Switzerland · Federal Foreign Office, Germany · Federal Ministry for European and International Affairs (BMEIA), Austria
What vaccinations and precautions are needed for Guam?
No vaccination is mandatory for direct entry; healthytravel.ch recommends hepatitis A for all travelers. A historic outbreak of Japanese encephalitis in 1990 on Saipan in the neighboring Northern Mariana Islands is a reminder that consistent mosquito protection remains worthwhile on Guam too.
Medical care on Guam meets US standards, with a large regional hospital in Tamuning; for the more remote neighboring islands of the Marianas, Guam serves as the medical center for the entire region.
Dengue cases are reported from time to time in the western Pacific, so consistent mosquito protection, day and night, is worthwhile. Tap water is considered safe in tourist areas, while bottled water is recommended in more remote parts.
Sources: healthytravel.ch, Swiss Expert Committee for Travel Medicine
How safe is Guam for travelers?
The Federal Foreign Office, the FDFA and the BMEIA issue no special safety warnings for Guam; the island is considered a safe destination with good infrastructure. Natural hazards are considered the greater risk: Guam lies in a seismically active zone with elevated earthquake and typhoon risk.
The Federal Foreign Office counts Guam among the US territories with elevated earthquake and, at times, tsunami risk; minor tremors are common, larger earthquakes considerably rarer. Crime against tourists, where it occurs at all, is concentrated in occasional theft in tourist zones such as Tumon.
In the event of a typhoon warning, local authorities give clear instructions via the "Conditions of Readiness" system; hotels in Tumon are set up for such weather situations, but it's still worth checking current warnings before traveling during the rainy season.
Sources: Federal Foreign Office, Germany · Federal Department of Foreign Affairs (FDFA), Switzerland
How do you get to Guam?
The international airport is Antonio B. Won Pat International Airport (GUM) near Tamuning; United Airlines is the only airline flying nonstop from Honolulu, alongside numerous nonstop connections from Tokyo, Osaka, Nagoya, Seoul and Manila. There is no direct connection from Europe.
| Route | Airline | Note |
|---|---|---|
| Honolulu – Guam | United Airlines | the only US nonstop connection, about 7 h 10 min flight time |
| Tokyo (Narita/Haneda) – Guam | United Airlines | multiple times daily, the most important route overall |
| Seoul (Incheon) – Guam | United, Jin Air and others | one of the highest-frequency routes |
| Manila – Guam | United Airlines | regular nonstop connection |
| Saipan – Guam | United Airlines | several times daily, connection to the Northern Mariana Islands |
According to data analysis, Seoul and Tokyo-Narita together account for around 42% of all monthly arrivals in Guam; the island is thus oriented mainly toward the East and Southeast Asian market. Travelers from Europe usually combine a flight via Tokyo, Seoul or Manila with the local onward connection to Guam.
United Airlines flies nonstop between Guam and the Northern Mariana Islands several times a day to Saipan; this short route is often used to combine both US territories.
There is no dense public bus network on Guam itself; a rental car is practical for excursions outside Tumon. Traffic drives on the right, as in the US.
Sources: FlightConnections
How do you pay in Guam?
The national currency is the US dollar. Credit cards are widely accepted in hotels, restaurants and shopping centers around Tumon, and ATMs are common across the island.
Because Guam is strongly oriented toward the Japanese, South Korean and Taiwanese markets, many larger shops and exchange bureaus in Tumon also accept yen and won directly; outside the tourist zone, US dollars are recommended.
Tipping follows the US model: around 15 to 20% is customary in restaurants, unless a service charge is already included in the bill.
Sources: Guam Visitors Bureau
Where do you stay overnight on Guam?
Large international hotel chains with direct beach access line Tumon Bay, by far the island's densest hotel area. Outside Tumon, a few smaller accommodations and apartments can be found, mainly for travelers with a rental car.
Anyone valuing quiet away from group tourism will find noticeably fewer and simpler, but quieter, accommodations in the south of the island; international booking platforms cover the offerings there more sparsely than in Tumon.
What do people eat on Guam?
Chamorro cuisine combines local ingredients such as red rice, coconut and fish with Spanish and Asian influences; marinated, grilled meat Chamorro-style is typical. Guam also offers a wide international range, from Japanese to American cuisine.
Kelaguen, finely chopped grilled meat or fish with lemon, coconut and chili, along with red rice colored with annatto, are among the best-known Chamorro dishes and are freshly prepared and sold at the Chamorro Village night market.
In Tumon, Japanese, Korean and American chain and buffet restaurants dominate, geared toward the large Asian tour groups; anyone seeking authentic Chamorro cuisine will find it more readily in small family-run establishments outside the hotel zone.
What culture shapes Guam?
Indigenous Chamorro culture, with its own language, the historic latte stones and strong family cohesion, forms Guam's cultural core, overlaid by American everyday life and Japanese-influenced tourism. Liberation Day on 21 July is the island's most important holiday.
Chamorro, Guam's indigenous language, is an official language alongside English and is taught in schools; greetings such as Håfa Adai are omnipresent in daily life and express pride in the island's own culture after decades of colonial overlay.
Latte stones, two-piece limestone pillars on which traditional Chamorro houses stood from around 900 AD onward, are considered Guam's central cultural symbol and appear on the island's flag, coins and official symbols.
Sources: Guampedia
What can you experience on Guam?
Highlights include snorkeling and diving in Tumon Bay and at the wreck of the SMS Cormoran, a visit to the War in the Pacific National Historical Park, and the evening Chamorro Village night market with local cuisine and dance.
Tumon Bay is designated a marine sanctuary and offers even inexperienced snorkelers flat, protected reefs right in front of the hotels; more experienced divers head for the wreck of the German SMS Cormoran, which sank in Apra Harbor during World War I and still lies today near the Japanese freighter Tokai Maru — one of the few places in the world where two wrecks from two world wars lie within diving range of each other.
The War in the Pacific National Historical Park spans several sites and, through preserved Japanese defensive positions and the Asan landing beach, explains the events of the 1944 recapture of Guam.
At Chamorro Village in Hagåtña, a night market with grilled fish, handicrafts and traditional dances takes place every Wednesday evening — the easiest way to experience Chamorro culture concentrated into a single evening.
Sources: Guam Visitors Bureau
How do you travel responsibly on Guam?
The reefs of Tumon Bay are protected and sensitive to sunscreen residue and touch; mineral, reef-safe sunscreen is recommended. Latte stones and other historic sites should not be touched or climbed.
Because Guam is heavily shaped by mass tourism from East Asia, travelers wanting to experience the island beyond the hotel zone benefit from deliberately visiting small family businesses and craft stalls in Chamorro Village instead of only the large shopping centers in Tumon.
Sources: Guam Visitors Bureau
What can Guam be combined with?
The Northern Mariana Islands are the obvious choice: United Airlines flies nonstop from Guam to Saipan several times a day. Via the major Asian hubs of Tokyo, Seoul or Manila, Guam also fits well into a longer East Asia trip.
Anyone wanting to visit both US Pacific territories usually combines Guam with a short side trip to Saipan; for CH/DE/AT travelers, the same ESTA applies to both territories, though a new entry procedure is still required when moving between them.
Who is Guam suited for, and who is it less suited for?
Guam suits travelers who want to combine beach, diving and US comfort with indigenous Chamorro culture and war history, as well as anyone looking for an easy stopover on the way through the western Pacific. It is less suited to anyone seeking an untouched, little-visited Pacific destination.
- Good fit: divers, families needing US-style infrastructure, history enthusiasts, travelers passing between Asia and Oceania.
- Less suited: anyone seeking an untouched, less commercialized Pacific destination — the Northern Mariana Islands or American Samoa are better suited for that; travelers wanting to avoid large tourist crowds in Tumon.
What does it mean that Guam is an unincorporated US territory?
Guam has been an "unincorporated territory" of the United States since 1950, with its own constitution, an elected governor and a non-voting seat in the US Congress; the US Constitution applies only partially. People born on Guam are US citizens but, as long as they live on Guam, may not vote in US presidential elections.
The Organic Act of Guam of 1950 granted residents US citizenship and civilian self-government, after Guam had previously been under naval administration; unlike a US state, however, Guam remains without full political representation at the federal level.
- Entry: for visitors from Switzerland, Germany and Austria, the regular US ESTA applies, with stays of up to 90 days — not automatically the same rules as for the US mainland, and not the separate, 45-day-limited Guam-CNMI Visa Waiver Program, which applies only to other nationalities.
- Customs and currency: Guam uses the US dollar and is subject to US customs law but levies its own taxes; a separate customs territory relative to the US mainland persists in part.
- Political rights: Guam elects a non-voting delegate to the US Congress and has no representative in the Electoral College; local elections for governor and the island legislature take place regularly.
Sources: Wikipedia · Federal Foreign Office, Germany