Planning for the weather is an important factor for making your trip to Amalfi a success, especially when you're splurging. The hottest months are usually September and January, with an average temperature of 15°C, while the coldest months are January and February, with an average of 15°C. The rainiest months in Amalfi are May, April, October and November, with each month seeing an average of 572 mm of rainfall.