Greek authorities say two people have died overnight in a large wildfire burning through forestland above a seaside resort in southern Greece.

Two people were found dead in a wildfire which, fanned by strong winds, raged uncontrolled near a rugged mountainous area in the central Greek region of Corinth on Monday, Greek authorities said.

California residents near a wildfire that is largely contained have been ordered to evacuate after the blaze in San Bernardino County flared up.

Cal Fire ordered residents in Seven Oaks and the Barton Flats area, including all campgrounds and cabins, to evacuate as the Line fire threatened.

New evacuation orders have been issued for the community of Seven Oaks in the San Bernardino Mountains, which is under threat from the more than 40,000-acre Line Fire burning since the beginning of this month.