Saipan is a small island with a total area of 44.55 sq mi (115.4 km2). Although small, it is the most populated island in the Northern Marianas where more than 90% of the population lives. It is endowed with blue lagoons, gorgeous white sand beaches and lush hills.

The island has a rugged structure. A ridge extends from the northern tip of the island southwestwards and attains a greatest height of 1555 ft (474 m) at Mount Tapochau, a limestone formation which is the highest point of Saipan located near the middle of the island. The east side of the ridge is steep and the west side slopes progressively to flat, developed land which extends to the coast. The south part of the island is a low, flat terrain. The whole eastern shore of the island is formed by rugged, rocky cliffs. The northeast and southeast shores of the island are, for the most part, steep-to and clear of off-lying dangers. The west and northwest shores are fronted by barrier reefs, within which are shallow lagoons.

Saipan has the least temperature variation in the world and is listed as “most consistent temperature” in the Guinness Book of World Records. The climate is tropical, with a rainy season running from about May through November. The rest of the year is mostly dry, with strong trade winds and is occasionally hit by typhoons.

The best time to visit the Northern Marianas is during the dry months of December to March. The average monthly temperatures are 24 to 27ºC.

The island is flourishing throughout most of the year and some areas, including some dense rain forest, are very beautiful. It's still possible to find isolated, unoccupied beaches in the more remote areas.