Unless you live on the Bay of Fundy you may not be aware that tide heights vary every day. A typical tide chart such as this Dept of Fisheries & Oceans one shows both the time of high and low tide and the height of both high and low tide.
There are many factors that influence tides, in general, and tide height, in particular. Of uppermost importance to tide height is the cycle of the moon, and secondarily, the location of the sun. This is why the new moon & full moon tides are the highest each month: these are called Spring tides (they don't have anything to do with Spring, the season).
Every so often (about every year & a half or more) we also get a rare, unusually high Proxigean Spring tide. This very high tide occurs when the moon is both unusually close to the Earth (at its closest perigee, called the proxigee) and in the new moon phase (when the Moon is between the Sun and the Earth).
Read more about the science of the tides...
Today is the day for the Proxigean tides in Bay of Fundy. Here is the Parrsboro, Nova Scotia, wharf & lighthouse at low tide this morning and high tide this afternoon.