A guide to weather conditions in Tonga
Guide to the weather conditions in the South Pacific including detailed information on Tonga, Samoa and Fiji
Metis Shoal, Tonga
Michigan Technological University Volcanoes Page. A new island in the Tonga chain created by a 1995 volcanic eruption. Photographs.
UN System-Wide Earthwatch: Tonga
Environmental information and statistics, including details for individual islands in the group.