The temperature at which wood combusts varies from 190 to 260 degrees Celsius. The ignition point of wood varies depending on the type of wood and the dryness of the wood. Decayed wood ignites at a temperature of 150 C.
As the surface temperature of the wood approaches 100 C, the water within the wood boils and then evaporates away, which makes the wood dry enough to ignite.
Wood begins to char slowly at temperatures between 120 C and 150 C.
Between 280 C and 480 C, the wood undergoes primary combustion, releasing large amounts of energy and unburned gases.