If you're in reasonably good shape, and have about six hours to kill, consider hiking from Ke'e Beach about 2.1 miles to Hanakap'ai Beach and then up to the Hanakapi'ai Valley to the waterfall at the end of the trail (another 1.9 miles or so). The trail from the beach starts out broad and winds along parallel to the stream, but it deteriorates from there. About half of the way up, the trail starts crossing the stream, and signs warning you of certain death during flash floods are posted. The stream was down during our hike, so we continued on. The trail deteriorates steadily as you approach the end of the trail, and so did the number of hikers over 50 years of age. I would recommend caution bringing small children on the trail, due to the numerous opportunities to slip and fall along the way. Many hikers had walking sticks, but it wasn't obvious that they helped.
After about 90 minutes from the beach, you arrive at a spectacular 300' cascade which comes from Koke'e State Park above. The swimming hole is entirely swimmable, but the water temp is definitely not the normal tropical temp you're used to. We estimated that it's 59F, or 10C. Very, very refreshing after the hike.
If you have kids, or if you're not in pretty good shape, consider the 4.2m round trip to the first beach. If you have the time, and if you want to see one of the great waterfalls of Kauai, consider going a little further and seeing the Hanakapi'ia Valley and falls.
Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more.