is the newest of the 50 U.S. states (August 21, 1959), and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of Australia. Hawaii’s natural and diverse scenery, warm tropical climate, abundance of public beaches and oceanic surrounding, and active volcanoes make it a popular destination for tourists, surfers, biologists, and volcanologists alike. Due to its mid-Pacific location, Hawaii has many North American and Asian influences along with its own vibrant native culture. Hawaii has over a million permanent residents along with many visitors and U.S. military personnel. Its capital is Honolulu on the island of Oʻahu.
Honolulu is the largest city in the world at least it has the longest borders. According to the state constitution any island not named as belonging to a county belongs to Honolulu. This makes all islands within the Hawaiian Archipelago, that stretch to Midway Island (1,500 miles northwest of Hawaii) part of Honolulu. Honolulu is about 1,500 miles long or more distance than halfway across the 48 contiguous states. Hawaii has a de facto population of over 1.3 million due to large military and tourist populations. Oʻahu, nicknamed "The Gathering Place", is the most populous island (and has the highest population density), with a resident population of just under one million in 597 square miles, about 1,650 people per square mile results in an average population density of 188.6 persons per square mile, which makes Hawaii less densely populated than Ohio and Illinois
Hawaii’s climate is typical for the tropics, although temperatures and humidity tend to be a bit less extreme due to near-constant trade winds from the east. Summer highs are usually in the upper 80s during the day and mid 70s, at night. Winter day temperatures are usually in the low to mid 80s, and (at low elevation) seldom dipping below the mid 60s at night. Snow, not usually associated with the tropics, falls at 4,205 metres (13,796 ft) on Mauna Kea and Mauna Loa on the Big Island in some winter months. Snow rarely falls on Haleakala. Mount Waiʻaleʻale, on Kauaʻi, has the second highest average annual rainfall on Earth, about 460 inches (11.7 m). Most of Hawaii has only two seasons: the dry season from May to October, and the wet season from October to April.Local climates vary considerably on each island, grossly divisible into windward (Koʻolau) and leeward (Kona) areas based upon location relative to the higher mountains. Windward sides face cloud cover, so resorts concentrate on sunny leeward coasts.