The average wave height is highest from December through March with a secondary
peak around September as a result of hurricanes (the peak of Hurricane Season is
September 10). Meanwhile waves average 4 ft or less from May through August.
The plot of Wave Height Percentages indicates that between 25-34% of the time
from December through March seas are at or above Small Craft Advisory Criteria,
which is 6 ft. This plot also indicates that the favored boating time of the
year with respect to small seas is from May through August. During this
time seas are 3 ft or less over 30% of the time. In fact seas are less
than 3 feet about 40% of the time in August. The reason for the higher
seas during the winter months correlates with an increase in Nor'Easter
activity, and higher frequency of cold frontal passages.
Extremes: Highest Wave
Feet September 5, 1996 (Hurricane