You might spend a lot of your vacation inside, but if you want to see more of the area, looking at local weather trends is a good idea. The hottest months are usually July and August with an average temp of 70°F, while the coldest months are January and February with an average of 40°F. The rainiest months in Gorizia are November, October, September, and May, with each month seeing an average of 8 inches of rainfall.