We Dug a Hot Tub on a Beach at the Edge of the Pacific Ocean
Hot Water Beach on the Coromandel Peninsula sounds like a gimmick. It is not a gimmick. It is one of the strangest and best things we have ever done as a family.
The spade costs three dollars to hire from the shop near the beach access.
That is the beginning of the story. You pay three dollars, you walk down to the beach, you pick a spot in the middle section where the steam is visible rising from the sand, and you start digging. A foot down, maybe eighteen inches, you hit water that is genuinely, surprisingly, almost-too-hot hot. You build up the walls of your hole. Cold ocean water seeps in at the edge and mixes with the geothermal water coming up from below. You adjust the ratio by how high or low you build your walls.
You now have a hot tub. On a beach. In front of the Pacific Ocean.
New Zealand.
What Is Actually Happening Here
The Coromandel Peninsula sits on top of significant geothermal activity. At Hot Water Beach, that activity comes within a meter of the surface in a specific stretch of shoreline. At low tide, the water table drops enough that you can dig down to it. At high tide, it is covered. For about two hours on either side of low tide, you have the window.
We checked the tide tables before we went. This is not optional. It is the whole thing. The app we used was accurate to the minute.
What Our 12-Year-Old Did
Our twelve-year-old arrived skeptical. He had heard about Hot Water Beach from us for two weeks and had that polite, slightly bored expression twelve-year-olds deploy when they have decided something sounds like a parent idea.
He dug for forty-five minutes straight. He designed a channel system to regulate the cold-water intake. He recruited his ten-year-old brother to dig a connecting pool. He was still in the water when we had to drag him out.
What Our 8-Year-Old Did
Our eight-year-old burned her foot slightly in the first sixty seconds by stepping directly onto the vent before we had properly mixed in cold water. This is a rite of passage. She recovered immediately, relocated to a better-mixed section, and spent the next hour declaring the temperature perfect and resisting any suggestion of leaving.
What We Did
We went twice. Day 12 and Day 13 of the trip. Low tides on consecutive afternoons meant two windows, and we used both. The second visit was less crowded and we knew exactly what we were doing with the spade.
The second visit was better. But the first visit was the one where we looked at each other across a hole full of steaming Pacific geothermal water with three happy, salty kids between us and had a moment of genuine disbelief that this place exists and we were actually here.
Practical Notes
- Check the tide table. The window is 2 hours before low tide to 2 hours after. Go in the middle. Go early in that window.
- Hire the spade. The shop at the beach entrance has them. Three dollars. Worth it.
- The water is HOT in the center. Especially right at the vent. Keep young kids toward the edges where it has mixed with cold water. Test before sitting.
- Go early or late in the day. Midday in peak season gets very crowded. Morning low tides give you space to work.
- It is a beach. Bring sunscreen, water shoes, and towels.
The Takeaway
There is a category of travel experience that sounds made-up when you describe it to someone who has not done it. Hot Water Beach is in that category.
“We dug a hole in the sand at the beach and it was a hot spring.”
People will nod politely. They will not fully understand until they are standing there with a spade and a three-dollar rental receipt and water at 60 degrees Celsius coming up through the sand of an otherwise normal-looking Pacific beach.
Go. Twice if you can.