Kauai, is green, and Kauai is wet—and that's why it's so beautiful. Parts of the island receive over 400 inches of rainfall every year, and all that rain means the Garden Isle is dripping in dozens of waterfalls. While some of these waterfalls require trekking through mud just to gain a glimpse of their splendor, others ones such as Opaekaa Falls only require stepping out of the car. Tumbling just over 150 feet, Opaekaa Falls is a year-round waterfall that is guaranteed to be flowing. The falls usually feature two separate streams that splash their way down the cliff face, but after periods of especially heavy rain, the two falls can merge into a single, explosive cascade. Whatever the size, the best time to visit is usually in the late morning when the falls are bathed in sunlight—and if it happens to be cloudy day, the falls are so close and easily accessible it’s easy to pay another visit.