The climate is characterized as tropical marine.
The weather is generally hot and very humid with little seasonal temperature variation. The mean high temperature is 86 °F (30 °C) and mean low is 76 °F (24 °C) with an average annual rainfall of 96 inches (2,180 mm).
Guam lies between 13.2°N and 13.7°N and between 144.6°E and 145.0°E, and has an area of 212 square miles (549 km2), making it the 32nd largest island of the United States.
The Guam Department of Education (GDOE, Chamorro: Sisteman Eskuelan Pupblekon Guåhan), formerly the Guam Public School System, is a school district that serves the United States territory of Guam .