The risk is very high in eastern and southern Scotland from Wednesday 10 August up to, and inclusive of, Monday 15 August.
During this time, surface fires could burn and spread in these areas with high intensity. Wind speeds are expected to be light to moderate meaning that fires could re-kindle and smoulder and therefore be challenging to extinguish.
On issuing the warning, the Scottish Fire and Rescue Service (SFRS) is urging the public to take extra care in the countryside, at a time when temperatures are forecast to rise.
Bruce Farquharson is Deputy Assistant Chief Officer with SFRS.
He said: “The next six days will bring a prolonged period of high temperatures and that means the risk of wildfires breaking out increases.
"Our crews will be ready to respond to every emergency to protect our communities. But there are simple steps that we can all take when we are spending time outdoors to prevent vast damage to the environment and protect emergency service workers from attending avoidable incidents.
"Please exercise the utmost caution and avoid lighting fires outdoors but if you must, check for restrictions or permissions required by the landowner and make sure you use a fire safe pit or container that can be properly extinguished before you leave."
Please visit the Your Safety section of our website for more outdoor and wildfire safety advice.