If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Nagercoil: The hottest months are usually March and April with an average temp of 83°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Nagercoil are November, October, December, and May, with each month seeing an average of 7 inches of rainfall.