Pohoiki Warm Ponds

Overview

These small, brackish “warm ponds” sit just behind the new black‑sand berms at Pohoiki Bay, formed after the 2018 Kīlauea eruption reshaped the coastline. Expect a mellow, out‑of‑the‑way vibe when open, and pools that feel more like a natural hot tub than a scalding spring.

As of September 2, 2025, the park is temporarily closed for dredging around the old boat ramp, with work slated through roughly November and reopening “until further notice.” Check County updates before you go.

What You’ll See

• Front ponds near the stranded boat ramp: knee‑deep, rocky, great for a quick soak.
• The “OG” pool: a roughly 4‑foot‑deep soak set in a collapsed lava tube just behind the first pond.
• A smattering of smaller pools along the beach margin; all are close to the parking area when open.

How It Formed (Short + Fascinating)

When the 2018 eruption poured lava down the Lower East Rift Zone, ocean currents piled fresh black sand into Pohoiki Bay, cutting off the boat ramp and trapping geothermally warmed groundwater behind the new beach. The result: a string of warm, shallow ponds fed by groundwater heated in volcanic rock and lightly mixed with seawater.

Logistics When Open

• Access: Drive the scenic Red Road (Hwy 137) to Isaac Hale Beach Park; parking is free.
• Hours: Historically around 9 a.m.–6 p.m., but they’ve varied—confirm day‑of.
• Facilities: Portable toilets (no running water). Picnic tables and BBQs are present; bring your own drinking water.

Safety, Comfort, and Etiquette

• Water quality: Signs say “enter at your own risk.” Skip if you have cuts, avoid submerging your head, and rinse afterward.
• Footing: Lava is sharp and slippery—water sandals make the day better.
• Ocean: The bay is a surf break with strong shorebreak and rips; the ponds are for soaking, not ocean swimming.
• Crowds: Pools are small; even a handful of people can make it feel full.
• Respect boundaries: Use the obvious boot paths to the back pools and stay off private property.

Best Time to Visit

When open, arrive early for quieter pools and softer light. Midday brings warmer air temps and a few more people. Overcast days are actually pleasant here—cooler air, same warm water.

Pair It With

Make a mini‑loop along the Lower Puna coast: Kehena Black Sand Beach, Mackenzie State Recreation Park for coastal views (and winter whale watching), Lava Tree State Monument, and a food stop in Pāhoa. It’s an easy, scenic day anchored by a restorative soak when Pohoiki is open.