The blaze, burning through a national park between the villages of Paũls and Alfara de Carles, has forced six nearby villages to remain indoors amid fears strong winds could worsen conditions.
Catalonia’s regional government has called for support from Spain’s Emergency Military Unit, a specialist rapid response force, to help contain the flames.
Spain recently recorded its highest-ever June temperatures, with meteorologists warning the extreme heat is linked to ongoing climate change.