Why is O‘ahus North Shore the world's big wave magnet?

How big do the waves get?

Why does it get so big?

Why do surfers choose the North Shore?




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How big does it get?

No one doubts that Hawaii is surfer's “Mecca” for the reasons explained above. Surf climatology for the north shore shows the average heights during peak season (November-February) around 16 feet (5 m) top to bottom on the shoreward side of the wave at the highest point of cresting.  But during peak season, there are on average about 20 days with enormous heights of 36-50 feet face (11-15 m) at the highest peaks on the outer reefs, while Waimea Bay holds roughly 25-35 feet (8-11 m) on the face.  What are the weather and ocean ingredients that make these extreme waves?
 
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