Guam in October | San Dionisio Fiesta & Micronesia Island Fair

Guam Has No Public Holiday in October

Look at Guam's government calendar and you'll notice something: October is the one month with no official holiday. Five months a year go without one — February, April, June, August, and October — but October is a bit different from the rest, because it's the one that used to have one. That's not an oversight. There's a clear story behind it.

Guam once observed Columbus Day in October, just like the U.S. mainland. That changed in 2017, when the holiday was discontinued. Rather than simply removing it, the government rethought what the holiday should celebrate in the first place — shifting the focus away from European "discovery" and toward the history and culture of the Chamorro people, who called Guam home long before any of that.

As it happens, the first Monday of March already had a holiday of its own — "Guam Discovery Day," observed since 1970. Around the same time Columbus Day was dropped in 2017, that March holiday was renamed and reworked into Guam History and Chamorro Heritage Day. So it's not quite accurate to say the October holiday simply "moved" to March — what changed was the content of that existing March holiday, shifting from commemorating a "discovery" to learning about Chamorro history.

Here's what makes it interesting: the event that word "discovery" refers to actually happened in the same village this page is about. On March 6, 1521, the Portuguese navigator Ferdinand Magellan, sailing under the Spanish crown, made landfall on Guam — and the spot where he did was Humåtak Bay. So the reason October's holiday disappeared (the retirement of Columbus Day) and the starting point of the new holiday born in March (the 1521 "discovery") both trace back to the very village that holds its fiesta in October. Keeping that connection in mind can add some depth whether you're in Guam for the March holiday or walking around Humåtak in October.

The upshot for October: government offices and shops run on their normal schedule. Without holiday crowds or closures to plan around, it can actually be a great month to get around the island.

San Dionisio Fiesta, a Village Celebration in the South

No holiday doesn't mean no event, though. Every October, the historic southern village of Humåtak (Umatac) holds the San Dionisio (Saint Dionysius) Fiesta. In 2026, it falls on October 18, centered around San Dionisio Catholic Church (Route 2, San Dionisio Drive, Humåtak, Guam 96915).

The fiesta begins in the evening, around 5 p.m., with a procession carrying a statue of the saint along the street that runs parallel to the bay. Afterward comes the "Gupot" — a village feast built around locally caught fish and Guam specialties. It's not a staged tourist event; it's a genuine, close-knit community celebration rooted in the village's faith and daily life.

Guam's Second-Oldest Village

Humåtak may be one of Guam's smallest villages by land area, but few villages carry as much history. It's considered Guam's second-oldest village, and for roughly 330 years of Spanish rule following Magellan's 1521 landing, it served as the island's gateway to the outside world.

In 1565, the explorer Miguel López de Legazpi anchored in Humåtak Bay for thirteen days and formally claimed the island for Spain. From then on, Humåtak Bay functioned as a key supply stop on the route of the Acapulco– Manila galleon trade (1565–1815), which carried ships across the Pacific between Mexico and the Philippines.

On the bluff overlooking the village — known as Chalan Aniti, or "Path of the Ancestors" — stands Fort Soledad, the last of four Spanish-era fortifications built in Humåtak. It's one of the most-visited historic sites in southern Guam and something of an icon of the island's Spanish colonial era. Down at the bay itself, an obelisk marks the spot of Magellan's landing. If you're in the village for the fiesta, it's well worth building in time to see both.

Exact timing and details can vary by year, so check the Guam Visitors Bureau's official site before you go.

October Cultural Highlight: Guam Micronesia Island Fair

October can also bring the Guam Micronesia Island Fair (GMIF), a major cultural event presented by the Guam Visitors Bureau. The 2026 fair ran October 23–25 at Governor Joseph Flores Memorial Park (Ypao Beach), showcasing traditional dance, crafts and food from across Micronesia. The dates are not fixed every year, so verify the current GVB schedule before building your October itinerary around it.

October Weather and Driving Tips

October sits in the transition between Guam's wet and dry seasons. Rainfall gradually tapers off compared to September, but the island can still see anywhere from 150–250mm of rain in a month, and daytime highs still typically run 27–31°C, so it stays warm and humid. This is not a month to let your guard down.

October is the most active month in NWS Guam’s long-term record for tropical storms and typhoons passing within 180 nautical miles of the island. Cyclones can occur year-round, but October deserves particular attention to forecasts and Guam Homeland Security/OCD alerts, especially for outdoor events and longer drives.

A few things to keep in mind while driving a rental car this month:

• Check the weather forecast and any typhoon advisories before you head out
• Sudden rain can cut visibility quickly — leave more following distance than usual
• On coastal routes like the one to Humåtak in the south, don't overpack your itinerary if the weather turns
• Hilltop sites like Fort Soledad can get slippery underfoot after rain, so wear shoes you can walk in comfortably

Planning to Visit Guam in October? Compare Rental Car Rates Early

With no holiday in the way, rates and vehicle selection tend to be easier to navigate this month — though the weekend of the San Dionisio Fiesta can bring extra traffic heading south. If you're planning to spend a full day exploring Humåtak's history alongside the fiesta, it's worth choosing a comfortable, fuel-efficient vehicle with some room to spare. Compare rates early and book with some breathing room.

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