Kailua Beach, a long stretch of white, deep sand and baby-blue, cobalt-filled water, caters to everyone. For families, it's ideal because you can stay there all day. Its calm waters that are ideal for swimming, mild temperature, shade-filled areas, convenient on-site amenities and its picturesque scenery ensure that. For the more adventure-minded, the beach is one of the best in Hawaii for kitesurfing and windsurfing.