Local media reported that the “out of control” fire had closed roads and evacuated at least five villages.
The fire started on Tuesday night and is burning in a wooded area with steep gorges in the northeastern part of the island.
Tenerife is the largest island in the Canary Islands off the northwest coast of Africa.
“The fire is out of control, the scenario is not positive at all,” Fernando Clavijo, head of the regional government, told a news conference on Wednesday.
“Our goal is to stop it from gaining ground. It was a very tough day,” he said.
He said the fire had already burned about 1,800 hectares (4,450 acres).
Mr Clavijo said thirteen planes and helicopters, including three dispatched from mainland Spain, were working to contain the fire in the area that is difficult to access.
On Wednesday morning, the villages of Ararat, Chivisaya, Media Montaña, Ajfona and Las Lagunetas were evacuated as a safety measure due to heavy smoke.
Reports said that to ensure safety, authorities have closed roads leading to the mountains in the northeastern part of the island.
“I am confident that the more than 200 ground forces that will be activated tonight will be able to overcome the two most worrying fronts,” Mr. Clavijo said on the X.
Wildfires are raging in the Canary Islands after a heat wave has left many areas very dry and prone to fires.
“We want the population to respect all these cuts,” said Montserrat Roman, head of the archipelago’s civil protection service.
Meanwhile, local authorities have restricted access to the surrounding forest. mount tide, the highest peak in Spain. They have also reported incidents of fire in the surrounding area.
A local radio station quoted Tenerife council president Rosa Davila as saying that “there is a great potential for fire, we have asked for additional means”. The fire is reportedly spreading into ravines and woods in the Candelaria and Arafo areas – making it difficult for firefighters to tackle.
Ms Davila said helicopters and aircraft were necessary to tackle the wildfires as the area was sloping.
Last month, a wildfire got out of control Spanish La Palma Island, at least 4,000 people were forced to evacuate. The wildfires and evacuations come nearly two years after a three-month volcanic eruption devastated La Palma. Although no one was killed, about 3,000 buildings were buried along with many banana plantations, roads and irrigation systems.
Over the past few weeks, a series of heatwaves have been sweeping across southern Europe, bringing temperatures to record highs in parts of Spain, Greece, Italy and Albania.
Climate experts emphasize that the climate emergency is significantly increasing the likelihood of extreme weather events and making them more severe.
During this, euro news Major European airlines such as EasyJet, Ryanair, Jet2 and Wizz Air have not informed passengers about possible disruption to flights from Tenerife, the report said.