# Smoothed sunspot numbers - updated on 02 March 2024 by OK1DUB # Source: http://www.sws.bom.gov.au/Solar/1/6 # JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC 1900 10.7 10.5 10.6 10.6 10.4 9.8 9.0 8.2 7.6 6.8 5.9 5.4 1901 4.8 4.4 3.9 3.2 2.8 2.8 3.0 3.1 3.3 3.6 3.3 2.8 1902 2.7 2.7 3.1 3.9 4.7 5.0 5.2 6.0 6.7 7.9 9.5 10.6 1903 12.3 14.5 15.8 16.9 19.3 22.5 25.4 26.6 27.9 29.6 31.4 33.5 1904 35.5 37.7 39.7 41.1 41.5 41.6 42.9 46.4 49.8 50.4 50.6 51.3 1905 52.5 53.5 54.5 56.6 60.5 63.4 63.1 60.4 58.5 59.5 60.6 61.5 1906 63.4 64.2 63.8 61.3 55.9 53.5 55.1 59.6 62.7 62.4 61.7 60.1 1907 56.9 55.0 56.4 59.6 62.5 62.8 60.5 55.8 51.4 50.3 50.4 50.6 1908 50.5 51.6 53.2 51.9 49.9 48.9 49.3 50.5 52.6 53.1 51.9 50.6 1909 49.4 46.4 41.6 40.7 42.2 43.3 42.6 40.7 38.2 35.4 33.8 32.8 1910 31.5 30.1 29.1 27.7 24.7 20.6 17.6 15.7 14.2 14.0 13.8 12.8 1911 11.9 11.2 10.0 7.5 6.0 5.8 5.6 5.1 4.6 4.0 3.3 3.1 1912 3.2 3.0 3.1 3.4 3.4 3.4 3.7 3.9 3.8 3.5 3.1 2.8 1913 2.6 2.5 2.2 1.8 1.7 1.6 1.5 1.5 1.6 2.4 3.3 4.0 1914 4.6 5.0 5.8 6.5 7.4 8.8 10.4 12.9 16.1 18.6 20.7 24.3 1915 29.4 34.8 38.9 42.3 45.3 46.9 48.3 49.8 51.5 53.9 56.9 58.6 1916 57.8 55.6 54.0 53.7 54.6 56.3 58.3 60.2 62.0 63.3 65.1 68.7 1917 73.4 81.2 89.7 94.1 96.3 100.7 104.8 105.4 104.2 103.5 102.2 98.3 1918 95.5 92.8 88.5 87.0 87.0 83.5 78.6 77.2 77.5 76.1 75.4 78.0 1919 78.4 75.2 72.8 70.4 67.4 64.6 63.7 62.8 61.9 60.5 56.7 51.4 1920 46.8 43.2 40.3 39.4 38.7 37.9 36.8 34.9 32.1 31.0 31.3 30.6 1921 31.0 31.7 31.1 29.0 27.3 26.5 25.3 24.4 25.5 25.8 24.3 22.5 1922 20.1 18.1 16.9 15.8 14.9 14.4 13.9 12.6 9.4 7.1 6.7 6.6 1923 6.4 5.9 6.0 6.6 6.9 6.4 5.6 5.6 5.7 5.8 6.8 8.1 1924 9.8 11.6 12.9 13.9 15.1 16.1 16.9 17.9 19.3 20.8 22.6 24.5 1925 25.9 27.1 29.4 32.6 36.0 40.9 47.1 51.8 55.6 57.7 58.9 60.9 1926 62.5 64.1 65.1 65.2 65.4 64.7 64.3 65.7 66.9 69.5 72.4 72.4 1927 71.9 71.7 71.7 71.7 71.6 70.5 69.1 68.4 68.2 68.4 67.7 69.0 1928 72.1 75.2 77.3 78.1 77.4 77.2 77.2 76.1 74.2 71.6 69.7 68.1 1929 66.1 64.2 61.1 58.5 59.5 62.8 64.7 64.0 62.9 61.6 60.1 57.4 1930 53.6 49.9 48.1 47.2 44.5 39.1 33.6 31.2 30.7 30.2 29.4 28.4 1931 27.6 26.9 25.9 24.3 22.6 21.6 21.1 19.7 17.5 15.9 14.8 14.8 1932 14.8 14.2 13.3 12.6 12.1 11.4 11.2 11.6 12.1 11.7 10.7 9.4 1933 8.4 7.9 7.6 7.4 6.9 6.1 5.3 4.3 3.5 3.6 4.6 5.4 1934 5.7 6.3 6.6 6.7 7.1 8.1 9.3 10.5 11.8 12.6 13.0 14.9 1935 17.6 19.5 22.0 25.6 29.9 34.1 37.9 42.0 46.5 51.3 55.1 57.2 1936 59.0 62.1 65.9 68.8 72.4 77.2 82.6 87.8 90.3 92.1 96.1 101.2 1937 107.6 113.5 116.7 119.2 119.0 115.8 113.0 111.2 110.9 110.7 110.8 109.8 1938 109.3 109.2 107.9 106.3 107.2 109.4 108.8 106.3 103.6 103.1 103.0 102.8 1939 100.1 96.9 97.4 97.9 95.2 90.9 87.5 85.5 85.5 84.3 79.6 76.3 1940 74.3 73.0 71.1 67.8 66.0 66.7 67.6 66.8 64.6 61.9 59.7 57.7 1941 56.6 54.7 52.8 52.4 51.2 48.9 47.1 47.0 47.7 49.2 50.1 47.9 1942 43.9 40.1 36.5 33.3 31.9 31.1 29.6 27.7 25.6 23.0 21.1 20.5 1943 20.2 19.9 19.6 18.8 17.5 16.5 16.0 14.4 12.6 10.8 9.2 8.6 1944 8.2 7.7 7.8 8.4 8.8 9.2 10.2 11.3 12.3 14.1 16.5 19.0 1945 21.9 23.8 25.1 28.1 31.7 33.1 34.3 38.6 43.9 48.1 52.1 56.0 1946 60.6 67.0 72.9 76.8 81.4 88.6 95.3 100.2 104.3 109.6 117.6 126.2 1947 131.7 136.8 143.4 149.0 151.8 151.7 151.2 148.9 145.5 145.7 146.2 145.3 1948 144.8 142.8 140.5 138.2 135.8 135.3 136.6 141.1 147.7 148.5 143.9 139.2 1949 136.6 134.5 133.2 133.0 134.8 136.0 134.4 130.0 124.4 121.0 119.6 118.0 1950 115.0 111.9 106.4 99.5 92.9 86.6 82.2 79.0 75.3 72.2 71.4 72.3 1951 71.7 69.5 69.8 70.7 70.2 69.8 68.6 66.3 63.3 59.2 53.0 46.8 1952 43.2 42.0 39.5 36.0 33.6 31.9 30.8 29.4 28.2 27.6 27.1 26.0 1953 24.1 21.6 19.9 18.9 17.4 15.2 12.8 11.5 11.4 10.4 8.8 7.4 1954 6.3 5.6 4.2 3.4 3.7 4.2 5.4 7.2 7.8 7.9 9.5 12.0 1955 14.2 16.4 19.5 23.4 28.8 35.1 40.1 46.5 55.5 64.4 73.0 81.0 1956 88.8 98.5 109.3 118.7 127.4 136.9 145.5 149.6 151.5 155.8 159.6 164.3 1957 170.2 172.2 174.3 181.0 185.5 187.9 191.4 194.4 197.3 199.5 200.8 200.1 1958 199.0 200.9 201.3 196.8 191.3 186.8 185.2 184.9 183.8 182.2 180.7 180.5 1959 178.6 176.9 174.5 169.2 165.1 161.4 155.8 151.3 146.3 141.1 137.2 132.5 1960 128.9 125.0 121.6 119.6 117.0 113.9 108.6 102.4 97.9 93.3 87.9 83.7 1961 80.2 74.8 68.8 64.3 60.1 55.8 53.1 52.5 52.3 51.4 50.5 48.7 1962 45.2 41.8 39.8 39.4 39.2 38.3 36.8 34.9 32.7 30.8 30.0 29.8 1963 29.4 29.8 29.7 29.1 28.7 28.2 27.7 27.2 26.9 26.0 23.8 21.3 1964 19.5 17.8 15.4 12.7 10.8 10.2 10.3 10.2 9.9 9.6 10.2 11.1 1965 11.7 12.1 12.5 13.6 14.6 15.0 15.5 16.4 17.4 19.7 22.3 24.5 1966 27.7 31.3 34.5 37.4 40.7 44.6 50.3 56.6 63.1 67.6 70.2 72.7 1967 75.0 78.8 82.2 84.6 87.5 91.3 94.1 95.3 95.3 95.0 97.1 100.6 1968 102.6 102.9 104.7 107.2 107.6 106.6 105.2 104.8 107.0 109.9 110.6 110.1 1969 110.0 109.6 108.0 106.4 106.2 106.1 105.9 106.5 105.4 104.1 104.6 104.9 1970 105.6 106.0 106.2 106.1 105.8 105.3 103.8 101.0 97.2 93.9 89.4 84.1 1971 80.4 77.8 74.4 70.9 68.1 66.7 65.4 64.6 65.8 66.2 66.8 69.4 1972 70.8 71.2 72.4 73.4 72.9 70.5 68.2 65.5 62.2 60.6 58.7 55.1 1973 50.9 46.5 44.2 42.7 40.7 39.1 37.5 36.1 34.4 32.6 31.8 31.5 1974 32.7 34.4 34.0 33.9 34.6 34.5 34.0 33.1 32.1 30.2 27.5 25.2 1975 23.0 22.1 21.2 18.6 16.8 16.0 15.0 14.3 14.4 15.4 16.1 16.3 1976 15.2 13.2 12.2 12.6 12.5 12.2 12.9 14.0 14.3 13.5 13.5 14.8 1977 16.7 18.1 20.0 22.2 24.2 26.3 29.0 33.4 39.1 45.6 51.9 56.9 1978 61.3 64.5 69.6 76.9 83.2 89.3 97.4 104.0 108.4 111.1 113.3 117.7 1979 123.7 130.9 136.5 141.1 147.3 153.0 155.0 155.4 155.7 157.8 162.3 164.5 1980 163.9 162.6 160.9 158.7 156.3 154.7 152.8 150.3 150.1 150.2 147.7 142.7 1981 140.3 141.5 143.0 143.4 142.9 141.5 140.3 141.1 142.8 142.2 138.8 137.8 1982 137.0 133.3 129.2 124.3 119.9 117.3 115.2 109.4 101.0 95.7 94.7 94.6 1983 92.8 90.3 85.9 81.5 77.1 70.5 65.5 65.8 67.9 68.2 66.8 64.0 1984 60.2 56.4 53.0 49.8 47.5 46.5 44.2 39.6 33.9 28.9 24.7 21.7 1985 20.5 19.6 18.6 18.3 18.3 18.0 17.4 17.1 17.3 17.3 16.8 15.3 1986 13.8 13.1 13.0 13.7 14.3 13.8 13.7 13.2 12.3 13.1 14.7 16.1 1987 17.4 19.3 21.8 24.1 26.2 28.1 31.0 34.6 38.7 43.3 46.6 51.3 1988 58.2 64.6 71.2 77.5 83.8 93.7 104.3 113.7 121.3 125.3 130.4 137.6 1989 142.0 145.0 149.7 153.5 156.9 158.4 158.5 157.7 156.6 157.4 157.5 153.5 1990 150.6 152.9 152.0 149.3 147.0 143.8 140.6 140.5 142.1 142.1 141.7 143.9 1991 147.6 147.6 146.6 146.5 145.5 145.2 146.3 146.6 144.9 141.7 138.1 131.7 1992 123.7 115.4 108.2 103.3 100.3 97.1 90.7 84.0 79.5 76.4 74.4 73.2 1993 71.4 69.3 66.6 63.6 59.9 56.1 54.7 52.3 48.4 44.9 41.2 38.4 1994 36.6 34.8 34.1 33.7 32.5 30.8 28.5 26.9 26.6 26.5 26.3 25.6 1995 24.2 23.0 22.1 20.6 19.3 18.2 17.0 15.4 13.4 12.1 11.3 10.8 1996 10.4 10.1 9.7 8.4 8.0 8.5 8.4 8.3 8.4 8.8 9.8 10.4 1997 10.4 11.0 13.5 16.5 18.3 20.3 22.6 25.0 28.3 31.8 35.0 39.0 1998 43.7 48.9 53.4 56.5 59.3 62.4 65.4 67.8 69.5 70.5 73.0 77.9 1999 82.6 84.6 83.8 85.5 90.5 93.1 94.4 97.5 102.3 107.7 110.9 111.0 2000 112.9 116.8 119.9 120.8 119.0 118.7 119.8 118.6 116.2 114.6 112.7 112.0 2001 158.3 152.5 155.1 160.7 163.7 167.4 172.0 175.8 177.1 177.3 180.3 179.1 2002 177.6 179.7 178.2 174.4 171.3 166.9 161.5 155.4 149.5 143.9 136.0 131.4 2003 129.6 125.7 118.7 111.9 107.0 101.7 96.0 92.9 91.8 89.1 86.9 84.1 2004 80.1 76.4 73.2 71.0 69.5 67.1 64.8 63.0 60.2 57.9 56.6 55.7 2005 54.5 53.2 52.3 49.3 45.0 44.5 44.6 41.9 39.4 38.9 38.4 36.0 2006 33.0 29.7 27.4 27.0 27.4 26.2 25.0 25.9 26.0 23.7 21.1 20.2 2007 19.8 19.0 17.7 16.4 14.4 12.8 11.6 9.9 9.6 9.9 9.2 7.9 2008 6.6 5.6 5.1 5.1 5.3 4.8 4.0 3.8 3.2 2.4 2.3 2.2 2009 2.5 2.7 2.9 3.3 3.5 4.1 5.5 7.4 9.5 10.9 11.7 12.7 2010 14.0 16.1 18.5 20.8 23.1 24.6 25.2 26.4 29.5 34.5 39.1 42.5 2011 45.7 48.8 53.8 61.1 69.3 77.2 83.6 86.3 86.6 87.4 89.4 92.5 2012 95.5 98.2 98.3 95.1 90.9 86.6 84.5 85.1 85.3 85.8 87.7 88.1 2013 86.8 86.1 84.4 84.3 87.0 90.9 94.6 99.0 104.7 107.0 106.9 107.6 2014 109.3 110.5 114.3 116.4 115.0 114.1 112.6 108.3 101.9 97.3 94.7 92.2 2015 89.3 86.1 82.2 78.9 76.1 72.1 68.3 66.4 65.9 64.3 61.2 57.8 2016 54.4 52.5 50.4 47.8 44.8 41.5 38.5 36.0 33.2 31.5 29.9 28.5 2017 27.8 26.5 25.7 24.8 23.3 22.2 21.0 19.6 18.3 16.7 15.4 15.0 2018 14.2 12.6 9.9 7.8 7.5 7.2 7.0 6.7 6.5 6.8 6.7 6.0 2019 5.4 5.0 4.5 4.3 3.9 3.7 3.5 3.4 3.1 2.6 2.0 1.8 2020 2.2 2.7 3.0 3.6 5.6 7.9 9.0 9.5 10.5 11.9 13.6 15.3 2021 17.2 19.0 21.7 24.8 25.8 27.6 31.4 35.4 40.2 45.2 50.8 55.9 2022 60.1 64.7 68.7 73.0 77.4 81.1 86.7 92.6 96.5 99.0 101.2 106.7 2023 113.3 117.8 121.1 122.9 124.1 125.1 124.3 124.0 124.6 125.7 126.1 123.7 2024 120.2 118.5 117.8 117.6 118.5 118.6 117.9 116.8 115.2 113.7 111.9 110.8 2025 110.5 110.3 109.4 107.5 105.2 102.8 101.3 100.0 98.1 95.6 93.6 91.4 2026 88.5 85.1 82.0 79.3 77.1 75.3 73.1 70.0 67.5 65.6 63.7 62.1 2027 60.7 58.7 56.2 54.5 52.9 51.0 49.5 48.5 47.3 45.3 43.3 41.4 2028 39.6 38.1 36.6 34.9 33.5 32.3 30.8 29.3 28.2 27.1 26.5 26.1 2029 25.5 24.8 24.3 23.6 22.5 21.4 20.4 19.7 18.9 17.7 16.5 15.5