 Kauai's climate is tropical, with generally humid and stable conditions year-round, although weather phenomena and infrequent storms have caused instances of extreme weather.At the lower elevations, the annual precipitation varies from an average of about on the windward (northeastern) shore to less than on the (southwestern) leeward side of the island.The average temperature in Lihu'e, the county seat, ranges from in February to in August and September.