Hawaiʻi's climate is typical for the tropics, although temperatures and humidity tend to be less extreme because of near-constant trade winds from the east. Summer highs usually reach around during the day, with the temperature reaching a low of at night. Winter day temperatures are usually around ; at low elevation they seldom dip below at night. Snow, not usually associated with the tropics, falls at on Mauna Kea and Mauna Loa on Hawaii Island in some winter months. Snow rarely falls on Haleakalā. Mount Waiʻaleʻale on Kauaʻi has the second-highest average annual rainfall on Earth, about per year. Most of Hawaii experiences only two seasons; the dry season runs from May to October and the wet season is from October to April.