{"id":42110,"date":"2026-01-05T15:19:00","date_gmt":"2026-01-05T14:19:00","guid":{"rendered":"https:\/\/www.venicevisitpass.com\/?p=42110"},"modified":"2026-06-15T17:14:23","modified_gmt":"2026-06-15T15:14:23","slug":"high-water-venice-guide-preparation","status":"publish","type":"post","link":"https:\/\/www.venicevisitpass.com\/en\/magazine-en\/high-water-venice-guide-preparation\/","title":{"rendered":"High Water Venice: Essential Guide and Preparation"},"content":{"rendered":"\n<p>Visiting Venice during <em>Acqua Alta<\/em> might seem daunting, but with the right information, it becomes a manageable and even fascinating experience. Because of seasonal tides, certain areas of the city may flood as Venice lives in a unique balance between water and architecture. Knowing the causes, timing, and proper behavior allows you to navigate safely and enjoy your trip without surprises.<\/p>\n\n\n<article class=\"item_card card__horizontal-pass\"><a href=\"https:\/\/www.venicevisitpass.com\/en\/prodotto\/venice-city-pass-all-inclusive-72h\/\" title=\"Venice City Pass all Inclusive 72h\" class=\"card__container card__container--horizontal-pass\"><div class=\"photo-container__horizontal-pass\"><picture><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-300x300.jpg\" class=\"card__photo\" alt=\"Venice City Pass all Inclusive 72H\" srcset=\"https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-300x300.jpg 300w, https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-150x150.jpg 150w, https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-100x100.jpg 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/picture><\/div><div class=\"details__horizontal-pass\"><div> <header class=\"details-header__horizontal-pass\"><h2 class=\"details-title__horizontal-pass\">Venice City Pass all Inclusive 72h<\/h2><\/header><div class=\"details-content__horizontal-pass\"><div class=\"card__pricing\">\n    <div class=\"card__pricing-content\">\n        <span class=\"card__pricing-label\">Starting from<\/span>\n        <span class=\"card__pricing-price-low\">\n            <span class=\"price-wrap\">\n    <span class=\"custom-price discounted\"><span class=\"woocommerce-Price-amount amount\"><bdi>89,00&nbsp;<span class=\"woocommerce-Price-currencySymbol\">&euro;<\/span><\/bdi><\/span><\/span>\n    <span class=\"custom-regular-price\"><del><span class=\"woocommerce-Price-amount amount\"><bdi>99,00&nbsp;<span class=\"woocommerce-Price-currencySymbol\">&euro;<\/span><\/bdi><\/span><\/del><\/span><\/span>        <\/span>\n    <\/div>\n            <div class=\"card__pricing-content-cta\">\n            <div class=\"card__pricing-cta\">\n                <span class=\"cta-text\">Book<\/span>\n                <span class=\"cta-icon\"><\/span>\n            <\/div>\n        <\/div>\n    <\/div><\/div><\/div><\/div><\/a><\/article>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What is Acqua Alta and Why It Matters to Tourists<\/strong><\/h3>\n\n\n\n<p>High Water is a natural phenomenon that deeply impacts the visitor experience. It occurs when the sea level rises above normal, flooding urban areas—particularly the lowest spots like <strong>St. Mark’s Square<\/strong>. Because it is tied to the unique shape of the Venetian lagoon, it is not an &#8220;emergency&#8221; but a historical characteristic of the city.<\/p>\n\n\n\n<p>For tourists, it is a crucial variable to understand. While water in the streets can slow down movement, it rarely ruins a trip if you are prepared. Today, the city is much more protected thanks to the <strong>MOSE system<\/strong>, a series of mobile barriers that rise to block the sea during exceptional tides (usually over 110–130 cm).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>The Causes of High Water<\/strong><\/h3>\n\n\n\n<p>Acqua Alta results from a combination of natural and climatic factors:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Astronomical Tides:<\/strong> The natural cycle of the moon.<\/li>\n\n\n\n<li><strong>Weather Conditions:<\/strong> Low atmospheric pressure and the <strong>Scirocco wind<\/strong> (blowing from the southeast) push water from the Adriatic into the lagoon.<\/li>\n\n\n\n<li><strong>Climate Change:<\/strong> Rising sea levels have increased the frequency of these events.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>When It Occurs and How to Recognize It<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Season:<\/strong> Most frequent in autumn and winter (October to February).<\/li>\n\n\n\n<li><strong>Thresholds:<\/strong> A tide is considered &#8220;high&#8221; when it exceeds <strong>90 cm<\/strong>. At 110 cm, about 12% of the city is flooded.<\/li>\n\n\n\n<li><strong>How to stay informed:<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Sirens:<\/strong> A system of sound alerts warns the city before the water arrives.<\/li>\n\n\n\n<li><strong>Apps:<\/strong> Download <strong>&#8220;Hi!Tide Venice&#8221;<\/strong>, the official app for real-time tide forecasts and to see which streets are currently flooded.<\/li>\n\n\n\n<li><strong>Online:<\/strong> Check the Venice Municipality Tide Center.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<article class=\"item_card card__horizontal-pass\"><a href=\"https:\/\/www.venicevisitpass.com\/en\/prodotto\/venice-city-pass-all-inclusive-72h\/\" title=\"Venice City Pass all Inclusive 72h\" class=\"card__container card__container--horizontal-pass\"><div class=\"photo-container__horizontal-pass\"><picture><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-300x300.jpg\" class=\"card__photo\" alt=\"Venice City Pass all Inclusive 72H\" srcset=\"https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-300x300.jpg 300w, https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-150x150.jpg 150w, https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-100x100.jpg 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/picture><\/div><div class=\"details__horizontal-pass\"><div> <header class=\"details-header__horizontal-pass\"><h2 class=\"details-title__horizontal-pass\">Venice City Pass all Inclusive 72h<\/h2><\/header><div class=\"details-content__horizontal-pass\"><div class=\"card__pricing\">\n    <div class=\"card__pricing-content\">\n        <span class=\"card__pricing-label\">Starting from<\/span>\n        <span class=\"card__pricing-price-low\">\n            <span class=\"price-wrap\">\n    <span class=\"custom-price discounted\"><span class=\"woocommerce-Price-amount amount\"><bdi>89,00&nbsp;<span class=\"woocommerce-Price-currencySymbol\">&euro;<\/span><\/bdi><\/span><\/span>\n    <span class=\"custom-regular-price\"><del><span class=\"woocommerce-Price-amount amount\"><bdi>99,00&nbsp;<span class=\"woocommerce-Price-currencySymbol\">&euro;<\/span><\/bdi><\/span><\/del><\/span><\/span>        <\/span>\n    <\/div>\n            <div class=\"card__pricing-content-cta\">\n            <div class=\"card__pricing-cta\">\n                <span class=\"cta-text\">Book<\/span>\n                <span class=\"cta-icon\"><\/span>\n            <\/div>\n        <\/div>\n    <\/div><\/div><\/div><\/div><\/a><\/article>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>How to Prepare<\/strong><\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Footwear:<\/strong> Bring or buy <strong>rubber boots<\/strong> (<em>stivali di gomma<\/em>). You will see shops selling disposable plastic overshoes, which work for light flooding but can tear easily.<\/li>\n\n\n\n<li><strong>Navigation:<\/strong> Use the <strong>elevated walkways<\/strong> (<em>passerelle<\/em>) set up by the city along main pedestrian routes.<\/li>\n\n\n\n<li><strong>Accommodation:<\/strong> Most hotels are well-equipped with elevated entrances and will provide tide updates to guests.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Venice Under the Water: What’s Really Down There?<\/strong><\/h3>\n\n\n\n<p>Venice does not &#8220;float.&#8221; It rests on an extraordinary engineering system:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Wooden Piles:<\/strong> Millions of larch and oak piles were driven into the marshy ground centuries ago. Because they are submerged in oxygen-free mud, they do not rot—they petrify and become as hard as stone.<\/li>\n\n\n\n<li><strong>Giudecca Canal:<\/strong> While some streets flood with just a few centimeters of water, the Giudecca Canal is much deeper, reaching up to <strong>12–17 meters<\/strong>.<\/li>\n<\/ul>\n\n\n<article class=\"item_card card__horizontal-pass\"><a href=\"https:\/\/www.venicevisitpass.com\/en\/prodotto\/venice-city-pass-all-inclusive-72h\/\" title=\"Venice City Pass all Inclusive 72h\" class=\"card__container card__container--horizontal-pass\"><div class=\"photo-container__horizontal-pass\"><picture><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-300x300.jpg\" class=\"card__photo\" alt=\"Venice City Pass all Inclusive 72H\" srcset=\"https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-300x300.jpg 300w, https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-150x150.jpg 150w, https:\/\/www.venicevisitpass.com\/wp-content\/uploads\/2024\/06\/Venice-City-Pass-all-Inclusive-72H-100x100.jpg 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/picture><\/div><div class=\"details__horizontal-pass\"><div> <header class=\"details-header__horizontal-pass\"><h2 class=\"details-title__horizontal-pass\">Venice City Pass all Inclusive 72h<\/h2><\/header><div class=\"details-content__horizontal-pass\"><div class=\"card__pricing\">\n    <div class=\"card__pricing-content\">\n        <span class=\"card__pricing-label\">Starting from<\/span>\n        <span class=\"card__pricing-price-low\">\n            <span class=\"price-wrap\">\n    <span class=\"custom-price discounted\"><span class=\"woocommerce-Price-amount amount\"><bdi>89,00&nbsp;<span class=\"woocommerce-Price-currencySymbol\">&euro;<\/span><\/bdi><\/span><\/span>\n    <span class=\"custom-regular-price\"><del><span class=\"woocommerce-Price-amount amount\"><bdi>99,00&nbsp;<span class=\"woocommerce-Price-currencySymbol\">&euro;<\/span><\/bdi><\/span><\/del><\/span><\/span>        <\/span>\n    <\/div>\n            <div class=\"card__pricing-content-cta\">\n            <div class=\"card__pricing-cta\">\n                <span class=\"cta-text\">Book<\/span>\n                <span class=\"cta-icon\"><\/span>\n            <\/div>\n        <\/div>\n    <\/div><\/div><\/div><\/div><\/a><\/article>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>FAQ – Venice High Water<\/strong><\/h3>\n\n\n\n<p><strong>1. When is the water officially considered &#8220;high&#8221; in Venice?<\/strong> <br>A tide is officially classified as <em>Acqua Alta<\/em> when it exceeds <strong>90 cm<\/strong> above the standard sea level. At this threshold, water begins to cover the lowest parts of the city, most notably St. Mark’s Square.<\/p>\n\n\n\n<p><strong>2. What exactly causes this phenomenon?<\/strong> <br>It is caused by a combination of three factors: the astronomical tide (influenced by the moon), low atmospheric pressure, and the <strong>Scirocco wind<\/strong>, which blows from the southeast and pushes Adriatic seawater into the lagoon. Climate change is also contributing to the increased frequency of these events.<\/p>\n\n\n\n<p><strong>3. How deep does the water actually get on the streets?<\/strong> <br>In most common cases, the tide fluctuates between <strong>90 cm and 120 cm<\/strong>. It is important to remember that this number represents the tide level relative to a reference point, not the depth of water on the ground. For example, with a 100 cm tide, there would be about 20 cm of water in St. Mark&#8217;s Square.<\/p>\n\n\n\n<p><strong>4. What is the historical record for high water?<\/strong> <br>The absolute record occurred on <strong>November 4, 1966<\/strong>, when the water reached <strong>194 cm<\/strong>. Another devastating event took place more recently in November 2019, reaching a peak of 187 cm.<\/p>\n\n\n\n<p><strong>5. How deep is the Giudecca Canal?<\/strong> <br>The Giudecca Canal is one of the city&#8217;s primary waterways and reaches a depth of approximately <strong>12 meters<\/strong>, allowing for the passage of large vessels (though large cruise ships are now restricted).<\/p>\n\n\n\n<p><strong>6. Why don&#8217;t the wooden piles supporting Venice rot?<\/strong> <br>The millions of wooden piles are driven deep into the lagoon mud in an <strong>oxygen-free (anaerobic) environment<\/strong>. Without oxygen, the microorganisms that cause wood to decay cannot survive. Over centuries, the wood undergoes a mineralization process, essentially turning it as hard as stone.<\/p>\n\n\n\n<p><strong>7. How can I know in advance if <em>Acqua Alta<\/em> is going to happen?<\/strong> <br>Venice uses a very efficient warning system. The Tide Center issues daily bulletins, and if a significant tide is expected, the city activates <strong>acoustic sirens<\/strong> with different tones to signal the predicted level. There are also official apps like &#8220;Hi!Tide Venice&#8221; for real-time tracking.<\/p>\n\n\n\n<p><strong>8. What is hidden beneath the water in Venice?<\/strong> <br>Beneath the visible canals lies a massive engineering feat: a dense forest of wooden piles, layers of Istrian stone foundations, and a complex network of ancient sediments that have supported the city’s heavy palaces for over a thousand years.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Related Articles<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.venicevisitpass.com\/en\/magazine-en\/how-many-days-to-tour-in-venice-complete-guide\/\"><strong>How many days to visit Venice:<\/strong> Ideal timing and hidden gems.<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.venicevisitpass.com\/en\/magazine-en\/8-things-to-do-in-venice-when-it-rains-activities-tips\/\"><strong>8 Wonderful things to do in Venice when it rains:<\/strong> Museums and indoor activities.<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.venicevisitpass.com\/en\/magazine-en\/venice-city-pass-all-the-benefits-of-visiting-venice-complete-guide-2025\/\"><strong>Venice City Pass 72h:<\/strong> Is it worth it for your trip?<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Visiting Venice during Acqua Alta might seem daunting, but with the right information, it becomes a manageable and even fascinating [&hellip;]<\/p>\n","protected":false},"author":7139,"featured_media":42106,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_agency_custom_field":"","footnotes":""},"categories":[291],"tags":[1882],"city":[],"class_list":["post-42110","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magazine-en","tag-travel-in-venice"],"acf":[]}