Hawaii
Climate

Hawai ʻ i has a tropical climate. Temperatures and humidity tend to be less extreme because of near-constant trade winds from the east. Summer highs reach around 88 °F (31 °C) during the day, with lows of 75 °F (24 °C) at night. Winter day temperatures are usually around 83 °F (28 °C); at low elevation they seldom dip below 65 °F (18 °C) at night. Snow, not usually associated with the tropics, falls at 13,800 feet (4,200 m) on Mauna Kea and Mauna Loa on Hawaii Island in some winter months. Snow rarely falls on Haleakalā. Mount Wai ʻ ale ʻ ale on Kaua ʻ i has the second-highest average annual rainfall on Earth, about 460 inches (12,000 mm) 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.

Overall with climate change, Hawai ʻ i is getting drier and hotter. The warmest temperature recorded in the state, in Pahala on April 27, 1931, is 100 °F (38 °C), tied with Alaska as the lowest record high temperature observed in a U.S. state. Hawai ʻ i's record low temperature is 12 °F (−11 °C) observed in May 1979, on the summit of Mauna Kea. Hawai ʻ i is the only state to have never recorded subzero Fahrenheit temperatures.

Climates vary considerably on each island; they can be divided into windward and leeward (ko ʻ olau and kona, respectively) areas based upon location relative to the higher mountains. Windward sides face cloud cover.
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