If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Guruvayur: The hottest months are usually March and February, with an average temperature of 28°C, while the coldest months are January and December, with an average of 27°C. The rainiest months in Guruvayur are June, July, August and September, with each month seeing an average of 556 mm of rainfall.