I brought my cap and goggles everywhere we went in Hawaii, dutifully scoping out currents and waves and weather conditions to find the perfect open-water swimming spot.
From Barking Sands to Poipu, the cap and goggles stayed in my bag. I tried to be a good, safe swimmer by opting out anytime I noticed a funky-looking current, or anytime the waves seemed more conducive to surfing—which turned out to be just about everywhere on Kauai.

Don’t cry for me—I sat on the beach and watched waves like these, at Poipu, crash onshore.
By the time we landed on Oahu’s North Shore, famed for house-size waves that challenge the world’s best surfers, I’d accepted that I wouldn’t be doing much swimming this trip. Oh, how wrong I was.

Rough surf for swimming = great conditions for watching pro paddleboarders catch waves.
Our Airbnb host in Waialua told us about a beach near our rental cottage, saying it was “really mellow” and “mainly a park for moms to bring their kids to.” As soon as we arrived at Aweoweo Beach Park, I noticed a several swimmers doing laps around the gorgeous cove, which was as mellow as promised thanks to a reef that protected the area from offshore waves. I took a quick dip to literally test the waters—no funky currents, and no waves to speak of. I ran back to our rental cottage to grab my poor, neglected cap and goggles for some playtime.

Aweoweo Beach Park in Waialua, on Oahu’s North Shore.
I swam along the shoreline for a bit, in awe of the visibility in the crystal-clear water. I saw a few big iridescent fish and a few tiny, colorful striped ones.

The water was so perfectly clear!
Then, I swam out toward the coral reef protecting the rest of the beach from the waves crashing out at sea, and I saw a turtle with a blackish green shell eating barnacles off a pyramid-shaped concrete structure underwater. I floated around him in total awe. I picked my head up to breath, and he picked his head up, too! Pure magic.

The tiny speck in this zoomed-in, grainy iPhone photo is me, planning to stay in the water forever.
If we hadn’t had a flight back to the mainland that afternoon, I may have never left that beach. Consider this blog post me paying it forward to any other swimmer vacationing in Hawaii who happens to Google “best open-water swim spot on Oahu.” I’m no authority on which spot is actually best, but if there’s anything better than this one, I’m not sure I want to know about it.