A well-aerated wood bonfire can reach temperatures of more than 2,012 degrees Fahrenheit and burns hottest in its final stages, when charcoal is formed. How hot a wood fire burns depends on the species of wood, its moisture content and the amount of oxygen it receives.
Hardwoods such as hickory, red and white oak, and sugar maple typically burn longer and give off more heat than softwoods such as redwood, cottonwood and aspen. Green wood gives off about half as much heat as dry, seasoned wood due to its moisture content. The color of a wood fire is indicative of its temperature. A deep red fire burns at roughly 600 degrees Fahrenheit, while a orange-yellow flame burns at approximately 2,012 degrees Fahrenheit.