Best Times to Visit Guam, USA

Guam, USA travel destination - best times to visit — Image: Flag of Guam.svg viaWikimedia Commons

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Quick Answer:

The most inviting time to experience Guam's tranquil beauty is during its dry season, particularly from January through May. This period offers consistently clear skies and gentle breezes, making every moment outdoors a pure delight. Imagine waking to the soft morning light, ready to explore pristine beaches or dive into the island's serene, turquoise waters, where visibility for snorkeling and diving is at its peak. The air feels refreshingly crisp, perfect for hiking to stunning viewpoints or simply relaxing under a palm tree as the sun paints the sky with golden sunsets each evening, before the more humid summer months arrive.

Airport Code

GUM

Coordinates

13.44°, 144.79°

Top Things to Do

Sunset Spectacle at Puntan Dos Amantes (Two Lovers Point)

Witness the legendary sunset from this dramatic cliffside, where the Pacific Ocean meets the sky in a blaze of color. Arrive an hour before dusk to secure a prime viewing spot and explore the charming grounds, then let the vibrant hues paint an unforgettable backdrop to the tragic Chamorro love story.

A Taste of Tradition at Chamorro Village Night Market

Immerse yourself in the heart of Guam's culture every Wednesday evening at the Chamorro Village Night Market. Wander through stalls brimming with local crafts, enjoy live music and dance, and feast on an array of Chamorro delicacies like kelaguen, red rice, and BBQ skewers – don't miss the fresh coconut juice!

Underwater Wonders of Tumon Bay

Dive into the crystal-clear, calm waters of Tumon Bay, a natural aquarium teeming with vibrant coral and tropical fish just steps from the shore. Rent snorkeling gear or join a guided dive to discover parrotfish, clownfish, and even sea turtles gliding through the protected reef. Early mornings offer the best visibility and fewer crowds.

Serene Swims at Inarajan Natural Pool

Escape to the tranquil, naturally formed saltwater pools of Inarajan, a unique geological wonder on Guam's southern coast. These calm, clear pools, protected from the open ocean by a volcanic rock barrier, are perfect for a relaxing swim or a leisurely snorkel, offering a glimpse into local life away from the bustling tourist areas.

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💡 Travel Tip: For the best value on hotels during this season, check current rates on Trip.com.

Essential Travel Tips

transport

Guam's public transportation is pretty limited, so renting a car is almost a must if you want to explore beyond Tumon Bay. It gives you the freedom to discover hidden beaches, historical sites like the War in the Pacific National Historical Park, and local eateries without relying on expensive taxis or infrequent buses. Book in advance, especially during peak season!

culture

The local Chamorro culture is incredibly welcoming! Start conversations with a friendly 'Håfa Adai' (hello) and be prepared for genuine warmth. When visiting local homes or even some smaller businesses, it's customary to remove your shoes before entering, so keep that in mind.

food

You absolutely *have* to try authentic Chamorro BBQ, often served with red rice and kelaguen (a tangy, savory dish). Keep an eye out for roadside stands or local fiestas, especially on Sundays, where you'll find the freshest and most delicious versions. Don't forget to douse everything in fina'denne' sauce – it's the island's signature condiment!

packing

The sun in Guam is no joke, and you'll be spending a lot of time in the water. Pack high-SPF, reef-safe sunscreen to protect both your skin and the delicate coral reefs. A rash guard is also a smart investment for extended snorkeling or swimming sessions to prevent sunburn.

safety

While Guam's waters are beautiful, always be mindful of ocean conditions; rip currents can be present, especially on less-sheltered beaches. If you're traveling between July and November, be aware it's typhoon season, so keep an eye on local weather advisories and have a plan in case of a storm.

money

Guam is a duty-free port, making it a great place to snag deals on luxury goods, electronics, and cosmetics, especially in Tumon's shopping centers. Tipping customs are similar to the mainland US – 15-20% for good service in restaurants and for tour guides is appreciated.

💡 Travel Tip: If you're planning your trip, it's worth checking flight prices on Trip.com before you decide.

Weather Details

Jan

15 days

Feb

13 days

Mar

12 days

Apr

13 days

May

15 days

Jun

18 days

Jul

20 days

Aug

22 days

Sep

23 days

Oct

22 days

Nov

20 days

Dec

18 days

Monthly Weather Data Table

Month	High (°C)	Low (°C)	High (°F)	Low (°F)	Rainfall (mm)	Rain Days	Daylight (h)
Jan	30°C	24°C	86°F	75°F	120mm	15 days	11.5h
Feb	30°C	24°C	86°F	75°F	100mm	13 days	11.8h
Mar	31°C	25°C	88°F	77°F	90mm	12 days	12.1h
Apr	31°C	25°C	88°F	77°F	100mm	13 days	12.4h
May	31°C	26°C	88°F	79°F	120mm	15 days	12.7h
Jun	31°C	26°C	88°F	79°F	170mm	18 days	12.8h
Jul	31°C	26°C	88°F	79°F	250mm	20 days	12.7h
Aug	31°C	26°C	88°F	79°F	300mm	22 days	12.5h
Sep	31°C	25°C	88°F	77°F	320mm	23 days	12.2h
Oct	30°C	25°C	86°F	77°F	300mm	22 days	11.9h
Nov	30°C	25°C	86°F	77°F	250mm	20 days	11.6h
Dec	30°C	24°C	86°F	75°F	170mm	18 days	11.4h

All Things to Do in Guam, USA

Sunset Spectacle at Puntan Dos Amantes (Two Lovers Point)

attraction

Best time: Nov-May

A Taste of Tradition at Chamorro Village Night Market

food

Best time: Year-round

Underwater Wonders of Tumon Bay

activity

Best time: Nov-May

Serene Swims at Inarajan Natural Pool

nature

Best time: Year-round

The Lush Trek to Tarzan Falls

activity

Embark on an adventurous hike through dense jungle to discover the multi-tiered beauty of Tarzan Falls, a refreshing reward for the effort. This off-the-beaten-path gem requires sturdy shoes and a sense of adventure, but the cool, cascading waters and natural swimming holes offer a truly immersive experience in Guam's wild interior. Consider going with a local guide for the best route, especially during the rainy season when trails can be very slippery.

Best time: Dec-Apr

Echoes of History at War in the Pacific National Historical Park

cultural

Reflect on the profound history of World War II in the Pacific at this poignant national park, spread across several sites. Explore remnants of Japanese fortifications, American memorials, and pristine beaches that once witnessed fierce battles. Visit the T. Stell Newman Visitor Center first for context, then respectfully explore the various units to understand the island's pivotal role.

Best time: Year-round

Savoring a Local Roadside BBQ Plate Lunch

food

Experience authentic Chamorro flavors by stopping at one of Guam's ubiquitous roadside BBQ stands or food trucks, especially along Marine Corps Drive. Indulge in a hearty plate lunch typically featuring perfectly grilled chicken or ribs, savory red rice, and tangy finadene sauce – a true taste of local comfort food that's both delicious and budget-friendly.

Best time: Year-round

Peaceful Paddle at Sunrise in Mangilao Bay

activity

Greet the day with a serene sunrise kayaking or paddleboarding adventure in the calm, glassy waters of Mangilao Bay. As the sun paints the sky in soft pastels, you'll glide over clear shallows, spotting juvenile fish and perhaps even a sea turtle, offering a tranquil escape and a unique perspective of Guam's eastern coast before the world awakens.

Best time: Nov-May

Getting Around Guam, USA

Rental Cars

Renting a car is hands-down the most effective way to experience Guam beyond the immediate Tumon Bay area. It offers unparalleled freedom to explore hidden beaches, historical sites, and local eateries at your own pace, making it almost essential for a comprehensive visit.

Cost:Expect to pay $40-80 per day for an economy car, depending on the season and rental company. Gas prices are comparable to the US mainland.

Tip:Book your rental car well in advance, especially if traveling during peak seasons like winter holidays or summer. Get full insurance; while roads are generally good, local driving habits can be unpredictable. Avoid driving on major routes like Marine Corps Drive during rush hour (7-9 AM, 4-6 PM) to save time. Download offline maps (Google Maps works well) as cell service can be spotty in remote southern parts of the island. Common mistake: Underestimating the need for a car; relying solely on taxis or shuttles will severely limit your ability to truly discover Guam.

Tumon Trolley & Hotel Shuttles

The iconic red Tumon Trolley provides a convenient loop service connecting major hotels, shopping centers, and attractions along Tumon Bay. Many hotels also offer their own complimentary shuttle services to nearby points of interest or sister properties, perfect for short hops within the tourist district.

Cost:Tumon Trolley: $4 for a single ride, $12 for a 1-day pass, $20 for a 3-day pass. Hotel shuttles are typically free for guests.

Tip:The Tumon Trolley is excellent for getting around within Tumon, but don't expect it to take you far outside this tourist core. Always check the schedule carefully at the trolley stops or your hotel; frequency can vary, especially in the evenings. Common mistake: Assuming the trolley covers all of Guam; it's strictly a Tumon Bay service. For hotel shuttles, confirm routes and times at your hotel's front desk upon arrival. Be prepared for 'island time' – schedules are sometimes a suggestion rather than a strict rule.

Taxis

Taxis are readily available at the airport, major hotels, and shopping centers. They are metered but can be quite expensive, especially for longer distances outside Tumon. They are best utilized for short, direct trips when convenience outweighs cost, like an airport transfer or a late-night ride.

Cost:The flag drop is around $2.40, then $4.00 for the first mile, and $2.40 for each additional mile. A trip from the airport to Tumon can range from $20-30.

Tip:Always confirm the meter is on or agree on a fare *before* starting your trip, especially if heading to a less common destination. It's not common practice to hail taxis on the street outside of designated stands. Common mistake: Using taxis for extensive sightseeing; the costs will quickly add up. Note that ride-sharing apps like Uber or Lyft are not officially available in Guam, making taxis your primary on-demand option.

Guam Regional Transit Authority (GRTA) Public Buses

Guam's public bus system serves various villages across the island, offering the most budget-friendly transportation option. However, routes are limited, and service frequency is low, making it generally impractical for most tourists on a tight schedule.

Cost:$1 per ride.

Tip:This is primarily a local commuter service, not designed for tourist sightseeing. If you're on a very tight budget and have ample time, you *could* use it, but expect long waits and indirect routes to attractions. Common mistake: Expecting a comprehensive, frequent public transport system like in major cities. Don't rely on GRTA to get you to specific tourist attractions efficiently. Check the GRTA website for current routes and schedules, but be aware that real-time tracking is not available. It's an experience for the truly adventurous, not for those on a tight itinerary.

Private Drivers & Tour Operators

For groups, families, or those seeking a tailored experience, hiring a private driver for a day or booking a guided tour can be an excellent option. This allows you to relax and enjoy the scenery while a local expert navigates, shares insights, and handles all the logistics.

Cost:Varies widely. A private driver for a full day might cost $200-400, depending on the vehicle and itinerary. Group tours range from $50-150 per person for half-day to full-day excursions.

Tip:This option is ideal for exploring the less accessible southern parts of the island or for specific activities like snorkeling trips or cultural village visits. Book through reputable tour companies or ask your hotel for recommendations. Common mistake: Not clarifying what's included (e.g., entrance fees, lunch) before booking. Always confirm the language capabilities of your driver/guide if that's important to you. This option is perfect for those who want to maximize their time and gain deeper local insights without the hassle of driving.

💡 Travel Tip: This season usually means better deals — check what's available on Trip.com.

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Frequently Asked Questions

When's the absolute best time to visit Guam to avoid the rain and enjoy the beaches?

You'll definitely want to aim for Guam's dry season, which typically runs from December to June. These months offer the most sunshine and calmer seas, making them perfect for snorkeling, diving, and simply lounging on the beach. Just be aware that late spring can get quite hot and humid, so pack light and stay hydrated!

Are there any specific cultural customs or etiquette I should be aware of when interacting with locals in Guam?

Absolutely, the Chamorro culture is incredibly welcoming and respectful. A simple 'Håfa Adai' (hello) goes a long way and is always appreciated. When visiting someone's home, it's customary to remove your shoes before entering. Also, respect for elders is paramount, so always greet them first and be mindful of your attire when visiting churches or sacred sites.

What's the best way to get around Guam, especially if I want to explore beyond Tumon Bay?

For true exploration of Guam, renting a car is almost essential. While there are shuttle buses in the main tourist areas like Tumon, they won't get you to the island's stunning southern villages, hidden waterfalls, or historical sites. Driving is straightforward, but be prepared for occasional potholes on less-traveled roads and remember to drive on the right, just like in the mainland US.

Beyond the popular beaches, what's a unique, off-the-beaten-path spot in Guam you'd recommend?

Head south to the village of Umatac and seek out the Malesso' Gadao's Cave. It's a bit of a trek, but the ancient Chamorro pictographs inside are incredibly humbling and offer a profound glimpse into the island's deep history. Afterward, grab some fresh coconut water from a roadside stand in Merizo – it's a true local experience you won't forget.

I've heard about the 'boonie stomps' in Guam. What exactly are they, and should I try one?

Boonie stomps are essentially guided jungle hikes, often led by local experts, that take you to hidden waterfalls, caves, and historical sites not accessible by road. If you're adventurous and reasonably fit, absolutely try one! They're a fantastic way to experience Guam's lush interior and learn about its natural and wartime history firsthand, but wear sturdy shoes and bring plenty of water.

Is Guam generally safe for tourists, and what currency do they use?

Guam is very safe, especially in the main tourist areas, but common sense always applies – don't leave valuables unattended. The official currency is the US Dollar, so no need for currency exchange if you're coming from the US. English is widely spoken, but learning a few Chamorro phrases like 'Si Yu'os Ma'åse'' (thank you) will definitely earn you smiles and show respect for the local culture.

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