The landslide in Idukki district, around 250 kilometres (155 miles) from Kerala state’s capital Thiruvananthapuram, occurred Friday but the ongoing search and rescue efforts have been hampered by torrential downpours.
“By yesterday evening, we had taken out 26 dead bodies. We have taken out three more today,” a district police official told AFP.
Local media reported that some 78 people were believed to live in the area, with many still missing.
Kerala has been hit by deadly floods during the annual monsoon.
At least 18 people died in a passenger jet crash in Kerala on Friday when an Air India Express jet overshot the runway while trying to land in a storm and plunged down a bank.
The monsoon across South Asia is critical to replenishing rivers and groundwater, but also causes widespread death and destruction.
More than 300 people have died in floods and landslides in eastern and northeastern India, Bangladesh and Nepal in recent weeks.