The Dry season generally runs from December to June. During these months, expect lower humidity, less frequent rain, and abundant sunshine. This period is the peak season for tourism due to the favorable weather conditions. Days are consistently warm, with average temperatures ranging from the low to mid-80s Fahrenheit (28-30°C). Rainfall still occurs, but showers are typically brief and scattered.
Conversely, the Wet season typically spans from July to November. This period brings higher humidity and more frequent rain showers. Do not imagine constant, all-day rain; rather, expect intense but often brief downpours, which can quickly give way to sunshine. Temperatures remain warm, similar to the dry season. Traveling during the wet season often means fewer crowds and potentially lower prices on accommodations and flights.
Typhoon season on Guam runs from July to November, with the highest risk of tropical storms and typhoons usually occurring between August and October. Guam has a robust typhoon preparedness system. Local authorities and hotel staff are well-versed in safety protocols.
If you travel during this period, monitor local weather forecasts from reliable sources like the National Weather Service, Guam. Hotels and news outlets provide updates. While direct typhoon hits are not an annual occurrence, their possibility means awareness and preparation for potential travel disruptions.
Best in dry season.
Snorkeling, diving, beach relaxation.
Boat tours, deep-sea fishing.
Variable by season.
Less muddy, easier trails.
More impressive river flow.
Wet season advantages.
More relaxed atmosphere.
Potentially better deals on accommodation and flights.
US Citizens do not need a visa to enter Guam. A valid government-issued photo ID, like a driver's license, is often sufficient for air travel from other US states or territories. A valid US passport is highly recommended. It serves as the most reliable form of identification and simplifies the travel process. US Residents (Green Card holders) typically present a valid Green Card for entry.
For other nationalities, entry requirements align with those for the US mainland. The Visa Waiver Program (VWP) allows citizens of participating countries (most Western European nations, Australia, New Zealand, Japan, South Korea, etc.) to travel to Guam for tourism or business for up to 90 days without a visa. To use the VWP, travelers require an approved Electronic System for Travel Authorization (ESTA) before departure. The Guam-CNMI Visa Waiver Program provides a specific pathway for citizens of certain countries to enter for up to 45 days without a visa.
Ensure at least six months validity beyond your planned departure.
Proof of eligibility or approved authorization.
Immigration officials may request proof of your departure.
Demonstrate ability to support yourself during your stay.
Guam uses the United States Dollar (USD, $) as its official currency. This provides convenience for US travelers. For international visitors, currency exchange services are available at the airport and some banks. ATMs are widely available, and most establishments accept major credit cards.
This budget provides a good balance of comfort and exploration. You can stay in mid-range hotels, often located in Tumon or Tamuning. Enjoy a mix of dining experiences, including local spots and casual restaurants. Renting a car for part of your trip gives you flexibility to explore the island widely. This budget also allows for participation in several paid activities and tours.
This budget allows for a premium experience. Stay in high-end resorts, notably those in Tumon with beachfront access and extensive facilities. Indulge in fine dining at resort restaurants and other upscale eateries. Hire private tours or use taxis for transportation. Enjoy a wide range of paid activities, including diving excursions, deep-sea fishing charters, spa treatments, and dinner shows.
Prices vary significantly by season, location, and type. Budget options might be around $60-100 per night. Mid-range hotels in Tumon often fall between $100-250 per night. Luxury resorts can cost $250 per night and upwards. A budget meal can cost $10-15. A mid-range restaurant meal might range from $20-40. Fine dining starts from $50+.
Generally, Guam is a safe destination for travelers, but like any location, precautions are wise. A comprehensive travel insurance policy can cover medical emergencies, trip cancellation, lost property, and travel delays. Consider World Nomads, SafetyWing, or Insubuy.
Ideally 4-6 weeks out for personalized advice. No mandatory vaccinations are required for entry from most countries.
Sunburn, Heatstroke: Use High SPF sunscreen, wear a Wide-brimmed hat, Sunglasses. Stay hydrated with a Reusable water bottle.
Use Insect repellent. Wear Water shoes on rocky areas. Do not touch marine animals.
Guam has modern healthcare facilities comparable to US standards.
The two main hospitals are Guam Memorial Hospital (public) and Guam Regional Medical City (private). Services can be expensive without insurance. Pharmacies are available for common medications.
Tap water in developed areas like Tumon and Hagåtñan is generally safe to drink. For sensitive stomachs or rural areas, Bottled water is a safer choice. Practice good food hygiene: wash hands frequently, eat at reputable establishments, ensure food is cooked thoroughly.
Ciguatera Fish Poisoning: Source seafood from reputable restaurants. Avoid barracuda, large reef groupers, or red snappers.
Guam has a moderate crime rate, lower than many US cities. Petty crime (pickpocketing, vehicle theft) can occur, specifically in tourist areas. Do not leave valuables unattended. Lock car doors. Be aware of surroundings, especially at night.
Typhoons (July-Nov) are the main risk. Guam has robust emergency procedures. Follow local authorities, hotel staff, and news outlets for warnings. Earthquakes: Minor quakes occur, major damaging ones are infrequent. Tsunami Risk: Low but present. Follow evacuation instructions if issued.
Emergency Number: Dial 911 for Police, Fire, or Ambulance (same as US mainland). Keep a list of important contacts (family, travel insurance, hotel). If you lose your passport, report it to local police and your embassy/consulate. AirHelp can assist with flight issues.
Be aware of your surroundings, especially at night. For water filtration, LifeStraw. For first aid, Adventure Medical Kits. For anti-theft bags, Pacsafe.
While Guam is safe, basic awareness aids a smooth trip.
Guam Memorial Hospital and Guam Regional Medical City
Pharmacies are available for common medications.
Follow local authorities and hotel instructions.
