Puaa Kaa State Wayside Park

Swimming and Waterfalls at Pua'a Ka'a

Pua'a Ka'a State Wayside Park sits near mile marker 22 on the Hana Highway, roughly two-thirds of the way to Hana from Kahului. It's one of the few places along the drive where you can safely swim in a freshwater pool directly below a waterfall -- and you don't have to hike to reach it.

From the parking lot, a short paved path leads to the lower pool and falls. Multiple small cascades tumble down moss-covered rock into clear pools big enough to wade and swim in. The water is cool, not cold, and the setting feels like a private jungle grotto even though the road is 50 yards away.

Facilities and Timing

The park has restrooms -- a rarity on the Road to Hana, so take advantage. There's also a small picnic area with tables under the tree canopy. The paved parking lot fills up fast, especially between 10 AM and 2 PM when tour vans cycle through. Arrive before 9 AM or after 3 PM and you might have the pools to yourself.

Midday is the most crowded window. Tour groups tend to stop here for a quick photo and bathroom break, then move on. If you wait them out by 15-20 minutes, the park clears considerably.

Good to Know

Flash floods can happen in any Hawaiian valley after heavy rain. If the water turns brown or rises suddenly, get out immediately. Check conditions before wading in. The pools are generally calm and safe on dry days, but this is a natural environment -- use common sense.

The park is free to enter and open during daylight hours. No lifeguards, no food vendors. Pack your own snacks and water.