Crews working across the Canary Island of La Gomera said they were "finding it difficult to limit the spread of fire".
Wind and high temperatures has helped rekindle the flames in many areas, and forced the emergency services to retreat from the hills and mountains.
Officials in La Gomera said there was evidence that the fire was started deliberately. Ten towns and villages were evacuated across La Gomera, whilst residents and holiday makers had to flee eight towns across Tenerife.
More top news
Eilidh MacLeod, who lost her life in the attack, travelled to the concert with friend Laura MacIntyre who remains in hospital.
Temperatures not sliding far - around 20C at midnight in places, so another restless nights sleep as it stays uncomfortable and stuffy.
With lines catapulting right and centre in the complex investigation over Trump's links with Russia, this is how the story unfolded.