How to Read the Miyajima Tide Table: Spring Tides, Neap Tides, and the 100cm Rule

Miyajima's Tide Table Isn't as Cryptic as It Looks

If you've ever seen photos of the floating torii gate at Itsukushima Shrine, you may have also seen the very same gate standing on dry sand, with tourists walking right up to its base. Same gate, same location — the only thing that changed is the tide. Once you understand how to read the local tide table, you'll know exactly which version of the torii you're going to get.

What Those Numbers Actually Mean

Every tide table lists a series of numbers in centimeters (cm) next to each time of day. That number is simply the height of the sea surface above a fixed reference level for that spot. Lower number = more sand exposed, more sea floor visible, water pulled back. Higher number = more water covering the flats, gate looking more "afloat."

For Miyajima specifically, the number to memorize is 100cm. When the tide level drops to roughly 100cm or below, the sandy area around the great torii is usually exposed enough to walk out to its base. Once the tide climbs past about 150cm, the gate is fully surrounded by water and reads as "floating" in every photo. Everything between those two numbers is a gray zone — partially wet sand, some puddles, still walkable in most cases but check underfoot.

Spring Tides vs. Neap Tides

The second piece of the puzzle is the difference between spring tides (大潮, ōshio) and neap tides (小潮, koshio) — terms you'll see printed right on the tide table alongside the daily numbers.

Tides swing between two extremes on roughly a two-week cycle tied to the moon. Around the new moon and full moon, you get spring tides: the gap between the day's lowest and highest tide is at its widest. On a spring-tide day, low tide drops especially low (great for walking to the gate) and high tide climbs especially high (great for the classic floating-gate shot).

Around the first and last quarter moon, you get neap tides: the swing is much gentler. The low point on a neap-tide day might not dip below 100cm at all, meaning you may not get a proper walk-out window that day — but you also get a longer, more forgiving stretch where the gate looks reasonably "floating" without needing to time things to the minute.

So the strategy is simple: chasing the walk-to-the-gate experience, aim for a spring-tide low. Chasing the postcard floating-gate photo without racing the clock, a neap tide (or a spring-tide high) gives you more breathing room.

Reading the Table in Three Steps

When you pull up the actual tide table — whether from the Miyajima tourism association site or a printed sheet at the visitor center — look for three things together: the date, the time, and the cm figure for that time. Most tables show the day's lowest tide time and cm value, and the highest tide time and cm value, side by side.

The practical move for trip planning: find the time you expect to be standing in front of the torii, then check what the cm number is at that hour. Compare it to 100cm. Below it, plan to walk. Above roughly 150cm, plan to admire from the shore or a boat instead. Anything in between, keep your shoes flexible and check conditions on arrival — wind and wave action can shift things slightly from the printed prediction.

Knowing this in advance changes how you plan the whole day, right down to when you book your ferry over and where you stay the night before.

The Short Version

The cm number on Miyajima's tide table is the sea level height at that moment. Under about 100cm, you can usually walk to the torii's base. Spring tides (near new/full moon) swing lowest and highest; neap tides (near quarter moons) stay milder in between. Match the tide type and the hour to what you actually want to see, and the tide table stops being confusing and starts being your best planning tool.

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