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Best Time to Visit Guam, USA: Sep or Oct 2026

Guam, USA travel destination - scenic view of Sunrise Over Two Lovers Point during ideal visiting season
Image: Flag of Guam.svg viaWikimedia Commons

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Quick Answer:

For a truly delightful Guam experience, aim for the dry season, roughly from December through May. During these months, you'll bask in abundant sunshine, perfect for exploring the island's charming beaches and vibrant coral reefs without the interruption of heavy rains. Imagine waking to the gentle sea breeze and spending your days enjoying warm, pleasant temperatures that invite leisurely strolls through local markets and breathtaking golden sunsets over the Pacific. The winter months offer a particularly inviting escape from colder climates, while the transition into late spring still provides fantastic conditions for adventure and relaxation.

Best Months to Visit:

SepOct

Airport Code

GUM

Coordinates

36.90°, -89.82°

Climate Overview

Guam, a tropical paradise in the Western Pacific, offers a year-round embrace of warmth and humidity, punctuated by distinct wet and dry seasons. Imagine stepping into a gentle, consistent warmth, where the air is thick with the scent of plumeria and the distant sound of waves. From December to May, the dry season blesses the island with abundant sunshine, perfect for exploring ancient latte stones under a clear blue sky or diving into vibrant coral reefs. As the calendar turns, the wet season arrives from June to November, bringing refreshing, often brief, afternoon downpours that make the lush jungle canopy even more vibrant and the air feel alive. These showers are a natural rhythm, often followed by brilliant rainbows and a renewed sense of freshness, ideal for enjoying the island's rich cultural festivals that thrive under this generous climate.

Best months at a glance: Sep, Oct

Jump to the month-by-month guide →

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Weather, best months, things to do, and travel tips

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Top Things to Do

Sunrise Over Two Lovers Point

Witness the sun paint the sky in fiery hues from this legendary cliffside viewpoint, a place steeped in Chamorro folklore. Arrive before dawn to claim a prime spot and feel the gentle sea breeze as the island awakens; the dramatic cliffs plunging into the turquoise Pacific are a sight to behold.

Snorkeling the Pristine Waters of Piti Bay

Escape the crowds and discover vibrant coral gardens teeming with marine life in this protected marine preserve. Rent a kayak or paddleboard and glide over the calm, clear waters, keeping an eye out for sea turtles and colorful reef fish; consider a guided tour for deeper insights into the ecosystem.

A Taste of Guam at a Local Chamorro Village

Immerse yourself in the heart of Chamorro culture by visiting a local village, where you can savor authentic dishes like kelaguen and red rice. Engage with artisans, learn about traditional crafts, and experience the warm hospitality that defines Guam; look for weekend fiestas for the most vibrant atmosphere.

Exploring the Latte Stone Park

Step back in time at the Latte Stone Park, home to ancient stone pillars that were once the foundation for traditional Chamorro homes. Wander among these impressive monoliths, imagining the lives of the island's earliest inhabitants, and visit the nearby museum for historical context.

See all 8 things to do →

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

Essential Travel Tips

money

While credit cards are widely accepted, always have some cash on hand for smaller vendors, local markets like the Chamorro Village night market, and tips. ATMs are readily available, but it's good to have smaller denominations for spontaneous purchases.

transport

Renting a car is highly recommended for exploring Guam at your own pace, especially if you want to visit more remote beaches and historical sites. Public transport is limited, and taxis can be expensive for longer distances. Book your rental in advance, especially during peak season.

culture

Embrace the 'Håfa Adai' spirit! This Chamorro greeting means 'hello' and is more than just a word; it's a way of life. A simple 'Håfa Adai' when you meet someone, whether a hotel staff member or a local shopkeeper, goes a long way in showing respect and opening doors to genuine interactions.

food

Don't leave Guam without trying kelaguen! It's a local delicacy made with finely chopped cooked meat (chicken, shrimp, or fish) mixed with lemon juice, coconut, onions, and hot peppers. You'll find it at most local eateries and it's a must-try alongside red rice.

safety

Guam is generally very safe, but like anywhere, it's wise to be aware of your surroundings. Keep valuables secure, especially at crowded tourist spots or beaches, and avoid leaving them unattended. The biggest 'danger' is probably sunburn, so pack plenty of reef-safe sunscreen!

packing

Pack light, breathable clothing – think shorts, t-shirts, sundresses. The humidity is high year-round, so quick-drying fabrics are your friend. Don't forget a swimsuit, a hat, sunglasses, and comfortable walking shoes for exploring historical sites like Fort Nuestra Señora de la Soledad.

Hotels
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Find Your Best Month to Visit Guam

Pick what matters most to you and we'll rank every month of the year using Guam's actual weather data.

  1. #1SepBest match
    🌡️ 82°F high🌧️ 7 rainy days🌅 12.4h daylight
  2. #2Jun
    🌡️ 87°F high🌧️ 9 rainy days🌅 14.6h daylight
  3. #3Aug
    🌡️ 87°F high🌧️ 9 rainy days🌅 13.5h daylight
  4. #4Oct
    🌡️ 70°F high🌧️ 9 rainy days🌅 11.2h daylight
  5. #5Jul
    🌡️ 89°F high🌧️ 12 rainy days🌅 14.4h daylight
  6. #6Nov
    🌡️ 57°F high🌧️ 9 rainy days🌅 10.2h daylight
  7. #7Apr
    🌡️ 69°F high🌧️ 11 rainy days🌅 13.2h daylight
  8. #8Dec
    🌡️ 49°F high🌧️ 9 rainy days🌅 9.7h daylight
  9. #9May
    🌡️ 78°F high🌧️ 13 rainy days🌅 14.2h daylight
  10. #10Jan
    🌡️ 45°F high🌧️ 9 rainy days🌅 10h daylight
  11. #11Feb
    🌡️ 48°F high🌧️ 10 rainy days🌅 10.9h daylight
  12. #12Mar
    🌡️ 59°F high🌧️ 13 rainy days🌅 12h daylight

Weather Details

Jan
9 days
Feb
10 days
Mar
13 days
Apr
11 days
May
13 days
Jun
9 days
Jul
12 days
Aug
9 days
Sep
7 days
Oct
9 days
Nov
9 days
Dec
9 days

Monthly Weather Data Table

MonthHigh (°C)Low (°C)High (°F)Low (°F)Rainfall (mm)Rain DaysDaylight (h)
Jan7°C-2°C45°F29°F94mm
9 days
10.0h
Feb9°C-1°C48°F31°F109mm
10 days
10.9h
Mar15°C5°C59°F41°F139mm
13 days
12.0h
Apr20°C10°C69°F50°F158mm
11 days
13.2h
May25°C16°C78°F60°F131mm
13 days
14.2h
Jun30°C21°C87°F69°F83mm
9 days
14.6h
Jul32°C23°C89°F73°F85mm
12 days
14.4h
Aug31°C22°C87°F71°F89mm
9 days
13.5h
Sep28°C18°C82°F65°F64mm
7 days
12.4h
Oct21°C12°C70°F53°F97mm
9 days
11.2h
Nov14°C5°C57°F40°F92mm
9 days
10.2h
Dec10°C1°C49°F34°F103mm
9 days
9.7h

Guam, USA Month by Month: Complete Guide

Planning your trip to Guam, USA? Here's what to expect each month:

Jan in Guam, USA

Weather

7°C°C / 45°F°F

9 days rainy days • 94mmmm

What to Expect

Cold, with highs around 7°C. Warm clothing and layers are essential. Occasional showers are likely, so a light rain jacket is handy. It's the coolest month of the year here.

Crowd Level

🟢 Low - Quiet season, easy to find accommodation

Quick Tip: Jan is an off-peak month, which usually means lower prices and easier last-minute bookings.

Feb in Guam, USA

Weather

9°C°C / 48°F°F

10 days rainy days • 109mmmm

What to Expect

Cold, with highs around 9°C. Warm clothing and layers are essential. Occasional showers are likely, so a light rain jacket is handy. Highs run about 23°C below Jul, the year's warmest month.

Crowd Level

🟢 Low - Quiet season, easy to find accommodation

Quick Tip: Feb is an off-peak month, which usually means lower prices and easier last-minute bookings.

Mar in Guam, USA

Weather

15°C°C / 59°F°F

13 days rainy days • 139mmmm

What to Expect

Cool, with highs near 15°C. Pack layers and a light jacket for daytime comfort. Occasional showers are likely, so a light rain jacket is handy. Highs run about 17°C below Jul, the year's warmest month.

Crowd Level

🟢 Low - Quiet season, easy to find accommodation

Quick Tip: Mar is an off-peak month, which usually means lower prices and easier last-minute bookings.

Apr in Guam, USA

Weather

20°C°C / 69°F°F

11 days rainy days • 158mmmm

What to Expect

Mild and comfortable, around 20°C. Pleasant conditions for sightseeing and walking. Expect frequent rain this month — bring waterproof gear. Highs run about 12°C below Jul, the year's warmest month. It also brings the most rain of any month here.

Crowd Level

🟡 Moderate - Comfortable crowds, good availability

Quick Tip: Apr is shoulder season, typically with lighter crowds and better availability than the summer peak.

May in Guam, USA

Weather

25°C°C / 78°F°F

13 days rainy days • 131mmmm

What to Expect

Warm and summery, with highs near 25°C — great for beaches and outdoor activities. Occasional showers are likely, so a light rain jacket is handy. Highs run about 7°C below Jul, the year's warmest month.

Crowd Level

🟡 Moderate - Comfortable crowds, good availability

Quick Tip: May is shoulder season, typically with lighter crowds and better availability than the summer peak.

Jun in Guam, USA

Weather

30°C°C / 87°F°F

9 days rainy days • 83mmmm

What to Expect

Warm and summery, with highs near 30°C — great for beaches and outdoor activities. Occasional showers are likely, so a light rain jacket is handy. Highs run about 2°C below Jul, the year's warmest month.

Crowd Level

🔴 High - Peak tourist season, book early

Quick Tip: Jun falls in the peak travel season — expect bigger crowds and higher prices, so book flights and accommodation well ahead.

Jul in Guam, USA

Weather

32°C°C / 89°F°F

12 days rainy days • 85mmmm

What to Expect

Hot, with daytime highs around 32°C. Plan indoor breaks during midday and stay hydrated. Occasional showers are likely, so a light rain jacket is handy. It's the warmest month of the year here.

Crowd Level

🔴 High - Peak tourist season, book early

Quick Tip: Jul falls in the peak travel season — expect bigger crowds and higher prices, so book flights and accommodation well ahead.

Aug in Guam, USA

Weather

31°C°C / 87°F°F

9 days rainy days • 89mmmm

What to Expect

Warm and summery, with highs near 31°C — great for beaches and outdoor activities. Occasional showers are likely, so a light rain jacket is handy.

Crowd Level

🔴 High - Peak tourist season, book early

Quick Tip: Aug falls in the peak travel season — expect bigger crowds and higher prices, so book flights and accommodation well ahead.

Sep in Guam, USA

⭐ Best Time

Weather

28°C°C / 82°F°F

7 days rainy days • 64mmmm

What to Expect

Warm and summery, with highs near 28°C — great for beaches and outdoor activities. Occasional showers are likely, so a light rain jacket is handy. Highs run about 4°C below Jul, the year's warmest month. It's the driest month of the year here.

Crowd Level

🟡 Moderate - Comfortable crowds, good availability

Quick Tip: Sep is one of the best times to visit, with some of the year's most favorable conditions.

Oct in Guam, USA

⭐ Best Time

Weather

21°C°C / 70°F°F

9 days rainy days • 97mmmm

What to Expect

Mild and comfortable, around 21°C. Pleasant conditions for sightseeing and walking. Occasional showers are likely, so a light rain jacket is handy. Highs run about 11°C below Jul, the year's warmest month.

Crowd Level

🟡 Moderate - Comfortable crowds, good availability

Quick Tip: Oct is one of the best times to visit, with some of the year's most favorable conditions.

Nov in Guam, USA

Weather

14°C°C / 57°F°F

9 days rainy days • 92mmmm

What to Expect

Cool, with highs near 14°C. Pack layers and a light jacket for daytime comfort. Occasional showers are likely, so a light rain jacket is handy. Highs run about 18°C below Jul, the year's warmest month.

Crowd Level

🟢 Low - Quiet season, easy to find accommodation

Quick Tip: Nov is an off-peak month, which usually means lower prices and easier last-minute bookings.

Dec in Guam, USA

Weather

10°C°C / 49°F°F

9 days rainy days • 103mmmm

What to Expect

Cool, with highs near 10°C. Pack layers and a light jacket for daytime comfort. Occasional showers are likely, so a light rain jacket is handy. Highs run about 22°C below Jul, the year's warmest month.

Crowd Level

🔴 High - Peak tourist season, book early

Quick Tip: Dec falls in the peak travel season — expect bigger crowds and higher prices, so book flights and accommodation well ahead.

All Things to Do in Guam, USA

Sunrise Over Two Lovers Point

nature

Witness the sun paint the sky in fiery hues from this legendary cliffside viewpoint, a place steeped in Chamorro folklore. Arrive before dawn to claim a prime spot and feel the gentle sea breeze as the island awakens; the dramatic cliffs plunging into the turquoise Pacific are a sight to behold.

Best time: Nov-May

Snorkeling the Pristine Waters of Piti Bay

activity

Escape the crowds and discover vibrant coral gardens teeming with marine life in this protected marine preserve. Rent a kayak or paddleboard and glide over the calm, clear waters, keeping an eye out for sea turtles and colorful reef fish; consider a guided tour for deeper insights into the ecosystem.

Best time: Nov-May

A Taste of Guam at a Local Chamorro Village

food

Immerse yourself in the heart of Chamorro culture by visiting a local village, where you can savor authentic dishes like kelaguen and red rice. Engage with artisans, learn about traditional crafts, and experience the warm hospitality that defines Guam; look for weekend fiestas for the most vibrant atmosphere.

Best time: Year-round

Exploring the Latte Stone Park

cultural

Step back in time at the Latte Stone Park, home to ancient stone pillars that were once the foundation for traditional Chamorro homes. Wander among these impressive monoliths, imagining the lives of the island's earliest inhabitants, and visit the nearby museum for historical context.

Best time: Year-round

Hiking to the Hidden Waterfalls of Tarzan Falls

nature

Venture inland on a moderately challenging hike through lush jungle to discover the refreshing cascades of Tarzan Falls. The cool, clear pools at the base are perfect for a revitalizing dip after your trek; wear sturdy shoes and bring insect repellent for the best experience.

Best time: Jun-Oct

Shopping for Unique Souvenirs in Hagåtña

shopping

Discover handcrafted treasures and local artwork in the charming shops and markets of Guam's capital, Hagåtña. Look for intricate shell jewelry, woven baskets, and locally made soaps; the Guam Visitors Bureau often has information on local artisan markets.

Best time: Year-round

Sunset Cocktails with Ocean Views

nightlife

Unwind with a tropical cocktail at one of the beachfront bars as the sun dips below the horizon, casting a warm glow over the Pacific. Many resorts offer stunning sunset views, but seek out local spots in Tumon or Asan for a more laid-back, authentic vibe.

Best time: Year-round

Exploring the Underwater World at Apra Harbor

activity

Dive or snorkel among the fascinating shipwrecks and diverse marine life within the protected waters of Apra Harbor. This unique aquatic playground offers a glimpse into Guam's maritime history and a chance to see a variety of reef fish and coral formations.

Best time: Nov-May

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Getting Around Guam, USA

Rental Cars

The most flexible way to explore Guam, especially if you plan to venture beyond Tumon. Having your own wheels allows you to access secluded beaches, historical sites, and local eateries at your own pace.

Cost:$40-$70+ per day, depending on vehicle type and rental company.
Tip:Book in advance, especially during peak season. Familiarize yourself with Guam's road signs, which are similar to the US. Be aware of 'speed bumps' that are often unmarked and can appear suddenly. Many locals use Waze or Google Maps for real-time traffic and speed trap alerts.

Public Buses (Guam Regional Transit Authority - GRTA)

GRTA offers a network of bus routes connecting major villages and tourist areas. It's a budget-friendly option for getting around, though schedules can be less frequent than in larger cities.

Cost:$2 per ride, with day passes available for $5.
Tip:Check the GRTA website or app for the most up-to-date routes and schedules, as these can change. Buses can be crowded during rush hour, so be prepared to stand. Don't expect them to run late into the evening; most routes cease operation by 7-8 PM.

Taxis

Taxis are readily available in tourist hubs like Tumon and at the airport. They are convenient for direct trips, especially if you have luggage or are traveling late at night when other options are limited.

Cost:Metered fares typically start around $3.50, with additional charges per mile. Expect to pay $15-$25 for a ride within Tumon or to/from the airport.
Tip:Confirm the fare or if the meter is being used before starting your journey. It's wise to have your hotel or destination address written down in Chamorro or English to avoid miscommunication. Tipping is customary, around 10-15%.

Ride-Sharing Services (e.g., Uber/Lyft - limited availability)

While not as ubiquitous as in mainland US cities, ride-sharing services do operate on Guam. They can offer a convenient and often slightly cheaper alternative to taxis, especially for shorter distances.

Cost:Varies by demand, but generally comparable to or slightly less than taxis.
Tip:Download the app before you arrive. Availability can be spotty outside of major tourist areas and during peak demand times. Drivers may not always be familiar with obscure locations, so having a landmark or cross-street handy is helpful.

Hotel Shuttles

Many hotels, particularly in the Tumon area, offer complimentary shuttle services to popular attractions, shopping centers, and beaches. This is a convenient way to get around without worrying about parking or navigation.

Cost:Free for hotel guests.
Tip:Inquire about the shuttle schedule and routes upon check-in. Don't assume the shuttle goes everywhere; it's usually limited to specific points of interest. Be punctual for pick-up times, as shuttles operate on a fixed schedule and won't wait.

Walking/Biking (within Tumon)

The Tumon area is quite walkable and bike-friendly, with sidewalks and dedicated paths in many sections. It's a pleasant way to explore the resorts, shops, and restaurants along the coast.

Cost:Free for walking; bike rentals typically range from $15-$30 per day.
Tip:Wear comfortable shoes and stay hydrated, as Guam can be hot and humid. Be mindful of traffic, especially when crossing streets. Some hotels offer bike rentals, or you can find local shops in Tumon.

💡 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 if I want to avoid the rain and enjoy the most sunshine?

For guaranteed sunshine and minimal rain, aim for the dry season, which typically runs from December to May. This is when the island is at its most vibrant for beach activities and exploring. While the wet season (June to November) can bring refreshing showers, it also means higher humidity and a greater chance of typhoons, so the dry months are your safest bet for uninterrupted outdoor fun.

Beyond the popular beaches, what's a truly unique cultural experience I shouldn't miss in Guam?

You absolutely must visit the Latte Stone Park in Hagåtña. These ancient pillars are remnants of the Chamorro civilization and offer a fascinating glimpse into Guam's pre-colonial history. It's a quiet, contemplative spot that really connects you to the island's deep roots, far from the usual tourist hustle.

Getting around Guam seems a bit tricky. What's the best way to explore beyond Tumon?

While renting a car offers the most freedom, especially if you want to explore the southern parts of the island, the local bus system (Guam Mass Transit) is surprisingly efficient for getting between major villages like Tumon, Dededo, and Hagåtña. For a more authentic experience, consider hiring a local taxi for a day trip to explore more remote areas; just agree on the rate beforehand.

I've heard about the Chamorro culture. Are there any specific customs I should be aware of to be respectful?

The Chamorro people are incredibly warm and welcoming, but showing respect for elders is paramount. When visiting someone's home, it's customary to remove your shoes before entering. Also, don't be surprised if you're offered food or drink; accepting is a sign of politeness and appreciation for their hospitality.

Are there any 'hidden gem' snorkeling spots that rival the popular ones?

While Piti Bay and Two Lovers' Point are well-known, I highly recommend checking out the waters off the coast of Talofofo or Umatac. These southern bays often have clearer water and a more untouched coral ecosystem, meaning you'll likely see more diverse marine life with fewer crowds. Just be sure to check local conditions and tides before heading out.

What's the deal with currency and tipping in Guam?

Guam uses the US Dollar, so no need to worry about currency exchange! Tipping is also similar to the mainland US; it's customary to tip around 15-20% for good service in restaurants and for tour guides. While not strictly mandatory, it's a appreciated gesture for excellent service.

What is the cheapest month to visit Guam, USA?

Guam, USA is generally cheapest to visit during its quieter off-season, around Apr. Hotel and flight prices tend to be lower then and there are fewer crowds; the trade-off is less reliable weather. Exactly how much you save depends on the destination and how far ahead you book, so staying flexible with your dates helps you find the best rates.

What should I avoid in Guam, USA?

The main thing to plan around is the weather: Apr is usually the least comfortable month to visit Guam, USA, with heavy rainfall, so it's worth avoiding if you can be flexible with your dates. If a comfortable climate is your priority, aim for Sep or Oct instead.

Is Guam, USA expensive to visit?

Costs in Guam, USA vary a lot with your travel style and when you go. Flights and accommodation tend to be most expensive around the busy Sep period and noticeably cheaper in the quieter Apr stretch, so shifting your dates can make a real difference. Booking accommodation and activities ahead, travelling outside the busiest months, and comparing prices across booking sites are the most reliable ways to keep your trip affordable.

What is Guam, USA famous for?

Guam, USA is famous for Sunrise Over Two Lovers Point, Hiking to the Hidden Waterfalls of Tarzan Falls, and Exploring the Latte Stone Park. Witness the sun paint the sky in fiery hues from this legendary cliffside viewpoint, a place steeped in Chamorro folklore. Arrive before dawn to claim a prime spot and feel the gentle sea breeze as the island awakens; the dramatic cliffs plunging into the turquoise Pacific are a sight to behold. The best time to experience it all is during Sep or Oct.

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