Planning for the weather is a good way to make your trip to Ponte delle Arche relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 13°C, while the coldest months are January and February, with an average of -3°C. The rainiest months in Ponte delle Arche are July, August, June and May, with each month seeing an average of 239 mm of rainfall.