Can You Really Roast Marshmallows on Pacaya Volcano?
Yes, you can roast marshmallows on Pacaya when geothermal vents are active and conditions allow. The availability depends on the season, the specific vent location, and weather. It's not guaranteed, but when the heat is there, it's real. Expect to crouch near volcanic vents and hold a stick with marshmallows over the thermal zones—it's warm enough to toast them, though not like an open campfire.
The short answer: yes, with caveats
Pacaya's geothermal vents do let you roast marshmallows over volcanic heat. But availability varies by season, weather, and which vents are accessible on the day you hike. It's not a guaranteed circus act—it's more like a bonus if conditions align.
How does the heat work?
Pacaya's summit is 2,552 meters high. The volcano is not actively erupting (activity at Fuego, a different volcano, is never guaranteed either). But beneath Pacaya's 1960s-era lava fields, geothermal energy escapes through cracks and vents. In some places, you can feel substantial warmth radiating from the ground.
On a standard hike, guides take you across the lava field and stop at zones where the heat is strong enough to do something with. That's where marshmallows come in. You're not standing at a campfire; you're crouching or leaning over a thermal vent a foot or two away, letting radiant heat do the toasting. It works, but it's gentler and slower than an open flame.
When can you actually roast them?
The honest answer: it depends.
Dry season (November–April): This is when vents are most reliably usable and the hike is less compromised by weather. Morning light is sharp, the trail is less muddy, and a good guide can take you to the hottest accessible spots.
Rainy season (May–October): Mornings tend to be clear, but afternoon rain is likely. Vents can still be active, and marshmallows can still happen—but weather and visibility may create complications. A guide will know whether conditions are workable for your hike date.
Specific factors: The exact vents that are accessible change. Rain and water runoff can cool some vents or make them harder to reach. A guide's local knowledge matters here. They know which zones were working last week and adapt based on what they see that morning.
What's it actually like?
You hike up the lava field. It's rough walking—rocky, uneven, sometimes steep, but not technical. Horses are available on the trail if you need them. After an hour or so, the guide spots a thermal zone and stops. You gather around, and if the heat is good, sticks appear.
Marshmallows go on the stick—usually courtesy of the guide, but confirm ahead of time. You hold the stick 12–18 inches above the vent, feeling warmth on your hands. It takes longer than toasting over a campfire. You rotate, you wait, you check for char. Kids find it mesmerizing. Adults usually laugh at how incongruous it feels.
The marshmallow gets soft and slightly golden if you're patient. It's not Instagram-perfect, but it tastes good at 2,500+ meters after a hike.
Realistic expectations
Don't arrive thinking you'll roast a dozen marshmallows over a roaring vent. Don't expect a Hallmark-movie campfire scene. Do expect a quirky, slightly surreal moment on a volcano where the ground itself provides heat. Do expect a story.
If roasting happens, it's a nice bonus. If vents aren't accessible or conditions don't allow, you still hiked Pacaya—the lava field, the views, the experience are substantial without marshmallows. A good guide will communicate this upfront.
What to actually bring
A private guide typically manages the logistics. If you want to bring your own marshmallows (maybe a specific brand, or vegan marshmallows, or something nostalgic), mention it to Guate Private when booking. If you forget or prefer not to pack them, a guide will have sorted it.
Sticks come from the guide or the trail. Napkins, baby wipes, or wet cloth wipes from your pack are useful for sticky hands afterward.
Safety with kids
Pacaya is family-friendly, and marshmallow roasting is generally safe for kids with supervision. A responsible adult—or the guide—needs to stay close. Kids should not hold sticks unsupervised over the vent. The heat is real but not like an open campfire, and the zone is a defined spot on the trail.
Younger children (under 5–6) might be overwhelmed by the hike itself before the novelty of marshmallows matters. Older kids and teens tend to think it's pretty cool.
The full experience
Marshmallow roasting is one moment in a Pacaya hike, not the whole point. You're hiking across volcanic landscape that erupted in the 1960s, crossing terrain that's still slowly being reclaimed by plants and time. The views toward Acatenango and Fuego (if clear) are dramatic. The physical experience—that's-real-lava-under-my-feet—is the main event.
If marshmallows happen, great. If conditions don't allow, you've still done something memorable. A private guide from Guate Private knows how to pace a Pacaya day, read the conditions, and give you the best experience the mountain offers that morning. Explore what a full Pacaya day looks like.
Questions travelers ask
Is roasting marshmallows on Pacaya guaranteed?
No. Geothermal activity varies by location and season. Guides know which vents are active and accessible on the day of your hike. In dry season, the vents tend to be more reliably usable. Rain and weather can affect accessibility. Plan on it as a possible experience, not a certainty.
How hot are the volcanic vents?
Hot enough to toast marshmallows, but not like a blazing campfire. The heat radiates from cracks in the lava where geothermal energy escapes. You're typically holding a stick a foot or two away from the vent, feeling warmth on your hand. It works, but it's gentler than you might imagine.
What should we bring to roast marshmallows?
A guide provides sticks or brings supplies. If you want to bring your own marshmallows, confirm with Guate Private ahead of time. Some tours include marshmallows; others ask guests to bring them or provide them on-site. Either way, a good guide has done this a hundred times and knows the drill.
Is it safe for kids?
Yes, with supervision. Kids should not hold sticks unsupervised over the vents. A guide or parent keeps control. The heat is present but not intense like a campfire, and the vents are defined areas on the trail. Kids usually find it novelty enough without risk if an adult is right there.
When is the best season for marshmallow roasting?
Dry season (November–April) tends to have more accessible vents and clearer skies. Rainy season (May–October) can still work if the hike goes ahead, but weather and visibility may be compromised. A local guide knows the conditions on your hike date.