The worst hit area was Kasimpar village according to the local official, where the landslide struck a coffee shop and people who were trying to shelter from the rain.
Police, soldiers and volunteers have joined the search alongside rescue workers, which is taking place around 90km west of the city of Semarang.
But efforts were intermittently suspended Tuesday as heavy rain continued to pound the area.
The weather forecast for the next three days suggests moderate rain that could “cause floods, flash floods and landslides”, warned Muhari on Tuesday.
Indonesia is prone to landslides during the rainy season, typically between November and April.
In November, flooding triggered by intense rains in western Indonesia killed 27 people.
But some disasters caused by adverse weather have taken place outside that season in recent years. Climate change has also increased the intensity of storms, leading to heavier rains, flash floods and stronger gusts.
In May, at least 67 people died after heavy rains caused flash floods in West Sumatra, pushing a mixture of ash, sand, and pebbles from the eruption of Mount Marapi into residential areas.
