Research: Surfing and Tides

During the first and last quarter of the moon’s cycle, there’s a minimal difference between high and low tides during the day. This small variation in water depth is known as a neap tide. When there’s a full moon or new moon cycle, there’s a larger difference between high and low tides. This bigger swing in tidal height is called a spring tide.

https://www.swimoutlet.com/guides/how-to-choose-the-best-tides-for-surfing