A nationwide orange fire warning issued by the Department of Agriculture will remain in place until Tuesday, with the peak risk being tomorrow.
There have been a number of gorse fires around the country, including one in the Annagry area of west Donegal which destroyed one house and damaged a number of sheds.
The blaze on Friday extended over around 40 square kilometres and lasted for 12 hours from midday until midnight.
The fire service, gardaí, the Coast Guard and the local community were involved in the operation to control and extinguish the fire, with assistance from Donegal Airport.
Speaking on RTÉ's This Week, the Director of Emergency Services with Donegal County Council, Garry Martin, said the blaze was caused by a combination of weather and ground conditions, including the build up of dry grass.
He appealed to people across the country to be vigilant in any activities they undertake that may cause fires and to report any unattended blazes that they observe to the emergency services.