The Chilean government has ordered a number of national parks and reserves to close in the Nuble, Biobio and Araucania regions.
The FCDO said: "Forest fires can be highly destructive and spread rapidly; roads might be closed and can affect your travel itinerary.
"You should monitor local media for updates and follow the advice of local authorities. Avoid the areas they advise are at risk and follow evacuation procedures if instructed to by authorities."
