April is an especially good time to go to Venice, with October, November, May, and September also desirable, more or less in that order. Summer, however, is the most popular. I would go anytime I could, but summer is hot and crowded. Venice draws a huge amount of tourist traffic, with good reason. (photo: Rialto Bridge, with caption- We went in off season, when the city is not crowded) This city is unique.