Only craft with self bailing cockpits should venture past Diamond Head and Honolulu Harbor when prevailing winds exceed 25 miles per hour. Winds from the south and west create a short choppy sea and winds of 20 miles per hour or more create dangerous conditions for all pleasure craft. Area no.2 - North to east winds cause seas which vary in roughness depending on the strength of the wind disturbances away from the Islands. The sailor can judge by watching surf. This area becomes dangerous with winds from the southeast clockwise to north.
Seas become choppy and hard to navigate.
With winds from the northeast to east this area is very calm. South winds in excess of 25 miles per hour create rough conditions. West winds create a confused choppy sea for the first few hours. There is no safe anchorage from - Oahu to Kahului, Maui, under these conditions. With northeast to southeast winds this area is calm and waters inshore are ideal for anchorage.