Wailua Beach on Kauai's eastern Coconut coast is a popular half mile long (and 100 feet wide) belt of white-sand with mountains, waterfalls, and scenic tours nearby. Wailua River State Park and Wailua Bay are both part of the beach, where surf conditions are great and swimming, water-skiing, kayaking, and canoeing are a regular part of the activities.
Strong rip currents and sudden drop-offs can become dangerous during winter, though, and conditions at Wailua are sometimes unsafe.
There are ancient Hawaiian temples and sacred sites within the state park, near the mouth of the Wailea River, and although there are no restrooms, a lifeguard is on duty part time.
The beach is just past the intersection of Hwy. 56 and Hwy. 580.