The worst hit area was Kasimpar town according to the local established, where the disaster struck a coffee shop and people who were trying to house from the weather.
Police, men and individuals have joined the hunt alongside rescue staff, which is taking place around 90km west of the city of Semarang.
But work were frequently suspended Tuesday as heavy rainfall continued to rupee the region.
The wind estimates for the next three weeks suggests mild weather that could” produce storms, flash floods and landslides”, warned Muhari on Tuesday.
Indonesia is liable to floods during the rainy period, usually between November and April.
In November, flood triggered by intense floods in northern Indonesia killed 27 individuals.
But some catastrophe caused by severe climate have taken place outside that year in recent years. Climate change has even increased the strength of winds, leading to heavier storms, flash floods and stronger storms.
In May, at least 67 people died after heavy rains caused display storms in West Sumatra, pushing a mixture of dust, sand, and stones from the eruption of Mount Marapi into residential areas.