Thunder Hole
A natural sea cave on Acadia's coast where waves crash with a thunderous roar and spectacular spray.
Highlights
Must-see attractions
Social
From TikTok & Reddit
Best Time
Best chance for the boom
Thunder Hole
Best Time
Best chance for the boom
Highlights
Must-see attractions
A natural sea cave on Acadia's coast where waves crash with a thunderous roar and spectacular spray.
"The thunder sound made doesn’t sound the same on video, must hear in person!"
🎯 Time Your Visit for the Roar
Aim for 1-2 hours before high tide for the best chance to hear the thunderous boom.
🌊 Prepare for Spray!
Bring waterproofs! You'll likely get wet from the powerful waves.
Quick Facts
Hours
Rating
4.6 · 3,193 reviews
Type
Scenic Spot
Address
Highlights
Discover the most iconic attractions and experiences
The Thunderous Boom
The main inlet
Witness water surge into a cavern, creating a thunderous roar and dramatic spray. A true display of nature's power.
Coastal Views
Surrounding rocky areas
Spectacular ocean vistas and dramatic rock formations offer stunning photo opportunities.
Wave Action
The inlet and surrounding coastline
Observe powerful waves crashing against the rugged Maine coastline, especially on windy days.
Plans like a pro.
Thinks like you
Planning Your Visit
Timing is Everything for the Roar
Embrace the Spray and the Scenery
Best Times
Insider Tips
from TikTok, Instagram & Reddit
🎯 Time Your Visit for the Roar
Aim for 1-2 hours before high tide for the best chance to hear the thunderous boom. +1
🌊 Prepare for Spray!
Bring waterproofs! You'll likely get wet from the powerful waves.
🚶♀️ Expect Crowds
This is a popular spot, especially during peak times. Patience is key!
👟 Wear Sturdy Shoes
The rocks can be slippery. Good footwear is essential for safe exploration.
Tips
from all over the internet
🎯 Time Your Visit for the Roar
Aim for 1-2 hours before high tide for the best chance to hear the thunderous boom. +1
🌊 Prepare for Spray!
Bring waterproofs! You'll likely get wet from the powerful waves.
🚶♀️ Expect Crowds
This is a popular spot, especially during peak times. Patience is key!
👟 Wear Sturdy Shoes
The rocks can be slippery. Good footwear is essential for safe exploration.
📸 Capture the Moment
The dramatic scenery is perfect for photos, but be mindful of your phone near the water.
What Travellers Say
Reviews Summary
Visitors find Thunder Hole to be a spectacular natural wonder, especially when the tide and waves align to create the signature 'boom' and impressive spray. While the crowds can be significant, many agree the dramatic coastal scenery and the sheer power of the ocean make it a worthwhile stop on any Acadia National Park itinerary. Some note that the experience can be underwhelming if the conditions aren't perfect.
"We visited on September 9, 2025. It was very crowded (throughout the entire Park Loop areas). We visited two hours before high tide, per the recommendation. It was cool but a little underwhelming. BUT, the area at Thunder Hole is spectacular and worth a visit whether or not you hear the roar."
Ann Green
"Cool pop off spot. You have to go about an hour or two before high tide so it’s busy then.
The thunder sound made doesn’t sound the same on video, must hear in person!
Prepare for some splashes and crowds along the holes rail.
There are also a lot of great rocks to take in the views from."
Lauren Hess
"Lookout area to look at the waves near ocean level. A small section has stairs, other area is simply rock easily walkable. There's small parking lot across the street and a very small visitor center. Nice but similar to other viewpoints."
Anh Thu Dinh
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
Thunder Hole is located on the scenic Park Loop Road in Acadia National Park, between Sand Beach and Otter Cliff. If you're driving, follow the Park Loop Road signs. There's a small parking lot nearby, but it fills up quickly, especially during peak season. Consider using the park's shuttle system if available. 
Yes, Thunder Hole is accessible by car via the Park Loop Road. However, parking is limited and can be challenging to find during busy periods.
If you are already within Acadia National Park, you can walk to Thunder Hole from nearby attractions like Sand Beach. It's a scenic walk along the coast.
The Park Loop Road is the primary route. For a stress-free experience, especially during peak season, consider utilizing the Acadia National Park shuttle system, which often stops at popular points of interest like Thunder Hole.
Yes, there is a small parking lot directly across from Thunder Hole. It tends to fill up very quickly, so arriving early or late in the day is recommended.
🎫 🎫 Tickets & Entry
Thunder Hole is located within Acadia National Park, so you will need an Acadia National Park entrance pass to access it. Passes can be purchased online or at park entrance stations.
Thunder Hole is an outdoor natural attraction and is accessible year-round. However, the park's facilities and roads may have seasonal hours. The best time to visit for the 'boom' is dictated by tide, not park hours.
No, there is no separate fee for Thunder Hole itself. Your Acadia National Park entrance fee covers access to all areas of the park, including Thunder Hole.
It's recommended to purchase your Acadia National Park pass in advance online to save time, especially during the busy summer months.
While the area is generally open, be aware of safety warnings, especially during high tide or rough seas. Stay on marked paths and heed any posted signs.
🎫 🌊 Onsite Experience
Thunder Hole is a natural inlet in the rocks where waves crash with immense force, creating a thunderous sound and dramatic spray that can shoot up to 40 feet. It's famous for this powerful natural phenomenon.
Wear comfortable walking shoes with good grip, as the rocks can be slippery. Bring waterproof clothing or a rain jacket, as you are likely to get sprayed by the waves.
Plan for at least 30 minutes to an hour, especially if you're waiting for the tide to be right for the 'boom.' This allows time to explore the surrounding rocks and enjoy the views.
Children should be closely supervised due to the powerful waves and slippery rocks. While exciting, it can be a hazardous environment if not approached with caution.
You can explore the surrounding rocky coastline, take in the panoramic ocean views, and enjoy the fresh sea air. The area offers great opportunities for photography.
📸 📸 Photography
Early morning and late afternoon offer softer light for photography. However, the dramatic action of the waves is often best captured during midday when the sun is higher, or during stormy weather.
You can capture dramatic wave action, powerful spray, coastal landscapes, and the unique rock formations. Astrophotography is also possible at night.
Protect your gear from salt spray! Consider a polarizing filter to enhance the ocean's colors and a wide-angle lens for dramatic landscapes. Be patient for the perfect wave.
Drone usage in Acadia National Park is subject to strict regulations. Check the National Park Service website for current drone policies before flying.
For capturing wave action, a faster shutter speed is recommended. For landscapes, a smaller aperture for depth of field. Experiment with settings based on light conditions.
Social
from TikTok, Instagram & Reddit