Even the special flight in which she arrived here was forced to remain airborne for about 30 minutes over the airport due to the downpour and landed around 4 pm.
Gandhi was to take a helicopter to Thrissur, about 60 km from here.
However, due to the inclement weather, the chopper ride was abandoned, police sources said.
After a slight delay, the UPA chairperson left for Thrissur in a bullet-proof car.
She is addressing election meetings at Thrissur and Kozhikode today, a day before the campaigning for the April 10 Lok Sabha elections comes to a close.