Statistics for South Shore Surf Heights (H1/10, Hawaii Scale): SEPTEMBER 1972 - 2021 Background Small Medium Large X-Large (<=2 Hs) (3 Hs) (4 Hs) ( 5 Hs) ( 6+ Hs) year # days % # days % # days % # days % # days % ----- ------ --- ------ --- ------ --- ------ --- ------ --- 1972 2 7 18 60 9 30 1 3 0 0 1973 10 33 12 40 8 27 0 0 0 0 1974 4 13 18 60 6 20 0 0 2 7 1975 5 17 16 53 6 20 0 0 3 10 1976 8 27 19 63 3 10 0 0 0 0 1977 3 10 21 70 5 17 1 3 0 0 1978 0 0 22 73 5 17 3 10 0 0 1979 6 20 23 77 1 3 0 0 0 0 1980 9 30 19 63 2 7 0 0 0 0 1981 9 30 18 60 3 10 0 0 0 0 1982 0 0 22 73 7 23 1 3 0 0 1983 9 30 17 57 4 13 0 0 0 0 1984 19 63 11 37 0 0 0 0 0 0 1985 3 10 21 70 5 17 1 3 0 0 1986 13 43 16 53 1 3 0 0 0 0 1987 8 27 16 53 4 13 2 7 0 0 1988 22 73 4 13 2 7 1 3 1 3 1989 25 83 4 13 1 3 0 0 0 0 1990 13 43 15 50 0 0 2 7 0 0 1991 29 97 1 3 0 0 0 0 0 0 1992 22 73 6 20 0 0 0 0 2 7 1993 21 70 5 17 1 3 3 10 0 0 1994 24 80 6 20 0 0 0 0 0 0 1995 25 83 4 13 1 3 0 0 0 0 1996 27 90 3 10 0 0 0 0 0 0 1997 13 43 8 27 7 23 1 3 1 3 1998 14 47 9 30 5 17 2 7 0 0 1999 18 60 8 27 2 7 1 3 1 3 2000 20 67 7 23 2 7 1 3 0 0 2001 12 40 10 33 5 17 3 10 0 0 2002 23 77 2 7 5 17 0 0 0 0 2003 20 67 7 23 2 7 1 3 0 0 2004 8 27 13 43 2 7 7 23 0 0 2005 18 60 5 17 4 13 0 0 3 10 2006 13 43 9 30 6 20 2 7 0 0 2007 16 53 9 30 3 10 2 7 0 0 2008 15 50 10 33 1 3 1 3 3 10 2009 24 80 2 7 1 3 3 10 0 0 2010 17 57 7 23 5 17 1 3 0 0 2011 21 70 3 10 3 10 2 7 1 3 2012 19 63 7 23 3 10 1 3 0 0 2013 16 53 14 47 0 0 0 0 0 0 2014 15 50 6 20 4 13 3 10 2 7 2015 12 40 3 10 7 23 4 13 4 13 2016 15 50 9 30 6 20 0 0 0 0 2017 22 73 4 13 2 7 1 3 1 3 2018 19 63 11 37 0 0 0 0 0 0 2019 9 30 13 43 6 20 2 7 0 0 2020 11 37 11 37 8 27 0 0 0 0 2021 9 30 18 60 3 10 0 0 0 0 MEAN 14 48 11 36 3 11 1 4 0 2 SD 7 6 3 1 1