The Venetians call it “Aqua Alta”, church bells rings and sirens resound throughout the city centre of Venice warning on the impeding floods in Venice in arrival with the next high tide.The flooding of Venice, when it does happen, is only temporary lasting around 1 to 2 hours depending on the level of the tide. The floods in Venice do not take place everyday. The high waters are related to many factors that are discussed below. You can enjoy visiting Venice all year round and the threat of floods should not prevent you from visiting the city. Just come prepared with a good pair of boots from November through January, and enjoy the spectacle, if it happens!