On Saturday, the government said that the wildfire had spread to 5,000 hectares and was still out of control.
"The forest fire is spreading in 10 municipalities, although evacuations are being carried out in 11, its area stands at 8,398 hectares in a perimeter of 70 kilometers [43 miles]," the government said in a statement.
The wildfire prompted the evacuation of 12,279 people, the statement added. On Saturday, the Canary Islands Rescue Service said that preliminary estimates suggest the number of evacuees could exceed 26,000.
Earlier this week, Canary Islands President Fernando Clavijo called the blaze the most complex the region has experienced in 40 years.