When it's raining on the rest of the island 7 times out of 10 it won't be raining in Poipu and the sun will poke through. Be warned however that all the east and north shore hotels tell their guests this info and during rainy periods it gets jam packed and parking runs out. Very clear water as there are no rivers nearby. There is a protected area for kids with no current unless the water level is really high. It's a good place to find a monk seal sleeping on the beach. Good facilities and well kept area.