How tides work
Two high tides and two low tides occur during every 24-hour period. Over a month, the type of tide changes from a spring tide, to a neap tide, and back again twice in a month..
A spring tide—popularly known as a “King Tide”—refers to the ‘springing forth’ of the tide during new and full moon. The difference between low and high tides during this period can be up to 4.5 metres.
A neap tide—which comes seven days after a spring tide—refers to a period of moderate tides when the sun and moon are at right angles to each other, and the difference between low and high tide is minimal.