El Niño (Sunspot Number)

La Niña (Sunspot Number)

(El Niño Index)

(La Niña Index)

Weak (1)

Moderate (2)

Strong (3)

Very Strong (4)

Weak (1)

Moderate (2)

Strong (3)

1952-53 (0.05)

1953-54 (0.05)

1958-59 (0.34)

1969-70 (0.16)

1976-77 (0)

1977-78 (0.03)

1979-80 (0.25)

2004-05 (0.28)

2006-07 (0.05)

2014-15 (0.18)

1951-52 (0.05)

1963-64 (0.04)

1968-69 (0.22)

1986-87 (0.04)

1994-95 (0.11)

2002-03 (0.29)

2009-10 (0)

1957-58 (0.4)

1965-66 (0.02)

1972-73 (0.15)

1987-88 (0.05)

1991-92 (0.38)

1982-83 (0.38)

1997-98 (0.16)

2015-16 (0.19)

1954-55 (0)

1964-65 (0.06)

1971-72 (0.21)

1974-75 (0.03)

1983-84 (0.28)

1984-85 (0.22)

2000-01 (0.27)

2005-06 (0.1)

2008-09 (0.02)

2016-17 (0.04)

2017-18 (0.05)

1955-56 (0.05)

1970-71 (0.22)

1995-96 (0.05)

2011-12 (0.05)

1973-74 (0.09)

1975-76 (0)

1988-89 (0.05)

1998-99 (0.1)

1999-00 (0.11)

2007-08 (0.05)

2010-11 (0.02)