If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Marmagao: The hottest months are usually April and May with an average temp of 82°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Marmagao are July, June, August, and September, with each month seeing an average of 32 inches of rainfall.