Planning for the weather is a good way to make your trip to Rocca Cilento relaxing and enjoyable, especially when you're splurging. The hottest months are usually August and July with an average temp of 75°F, while the coldest months are January and February with an average of 52°F. The rainiest months in Rocca Cilento are November, January, December, and October, with each month seeing an average of 7 inches of rainfall.