Rescuers in western Japan dug through mud and rubble on Monday, racing to find survivors after torrential rains unleashed floods and landslides that killed at least 100, with dozens missing.

Rain tapered off across the region battered by last week’s downpour, revealing blue skies and scorching sun forecast to push temperatures above 30 degrees Celsius, fuelling fears of heatstroke in areas cut off from power or water.