Evangelina Chamorro Diaz, 32, found herself being carried away when a flashflood of mud and debris hit Punta Hermosa after heavy rain in Lima province.
Armando Rivera, Chamorro's husband, told a Peruvian radio station that he and his wife climbed a tree but the tree broke in two.
According to La Republica, a bull spotted struggling in the sludge was also rescued by dozens of neighbours, along with other animals.
Peru's northern state, Piura, was devastated after the Piura River overflowed and collapsed the drainage systems.
The rains, brought on by El Niño, are expected to continue for another two weeks, authorities said on Thursday.
At least 60 people have died in weather-related events since December, many in recent days after a sudden warming of Pacific waters near Peru unleashed heavy rains, landslides and flooding.
"There's a person there!" an observer cried out.
Schools nationwide have suspended classes.
They both managed to escape with only minor injuries.
Severe flooding in Peru caused by unusual rainfall has left many people homeless and claimed several lives.
"There hasn't been an incident of this strength along the coast of Peru since 1988", Kuczynski said. He urged them to avoid flooded roads and weak bridges. Alice Bryant adapted the information for Learning English. Write to us in the Comments Section.