If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Guruvayur: The hottest months are usually March and February with an average temp of 83°F, while the coldest months are January and December with an average of 81°F. The rainiest months in Guruvayur are June, July, August, and September, with each month seeing an average of 22 inches of rainfall.