Northern Ireland Rainfall (mm) Areal Series, starting from 1914 Allowances have been made for topographic, coastal and urban effects where relationships are found to exist. The 30 year averages have been derived from 1km grids, whereas the rest of the values have been derived from 5km grids. Seasons: Winter=Dec-Feb, Spring=Mar-May, Summer=June-Aug, Autumn=Sept-Nov. (Winter: Year refers to Jan/Feb). Data is provisional from February 2008 & Winter 2007/2008. Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC WIN SPR SUM AUT ANN 1914 63.9 137.5 127.7 52.5 55.3 37.9 68.8 103.0 48.6 47.2 134.9 198.5 --- 235.5 209.7 230.7 1075.8 1915 103.6 122.8 35.2 74.8 33.6 63.6 129.1 94.7 40.3 81.7 79.3 173.8 424.9 143.6 287.4 201.3 1032.5 1916 94.1 118.6 49.3 115.8 155.8 61.8 81.1 79.0 32.5 188.8 118.4 87.5 386.5 320.9 221.9 339.7 1182.7 1917 68.2 63.4 83.6 75.9 99.6 66.5 61.1 159.6 65.6 181.3 148.7 85.9 219.1 259.1 287.2 395.6 1159.4 1918 90.9 127.8 35.6 42.9 74.2 48.3 110.8 104.6 163.3 122.3 125.9 138.3 304.6 152.7 263.7 411.5 1184.9 1919 128.5 34.3 101.5 62.2 50.9 86.9 19.6 101.5 93.2 54.2 94.7 223.8 301.1 214.6 208.0 242.1 1051.3 1920 143.4 79.8 100.1 93.7 102.7 70.8 99.6 77.8 80.9 145.8 112.4 119.3 447.0 296.5 248.2 339.1 1226.3 1921 148.1 28.5 102.6 40.2 60.8 11.5 113.4 110.8 42.3 100.8 108.5 129.9 295.9 203.6 235.7 251.6 997.4 1922 127.8 123.0 52.9 109.2 54.4 68.2 113.0 110.5 79.5 39.0 57.4 115.4 380.7 216.5 291.7 175.9 1050.3 1923 115.7 173.2 59.0 96.7 57.0 39.9 83.9 179.4 126.3 125.6 120.1 124.7 404.3 212.7 303.2 372.0 1301.5 1924 117.6 46.0 32.7 92.3 126.3 80.8 131.7 150.6 150.9 76.5 89.3 135.6 288.3 251.3 363.1 316.7 1230.3 1925 95.4 131.5 51.5 109.9 133.0 20.4 103.5 63.8 89.6 91.1 66.0 104.4 362.5 294.4 187.7 246.7 1060.1 1926 158.7 101.3 50.1 60.8 83.7 68.9 91.6 104.9 71.3 101.0 129.3 43.9 364.4 194.6 265.4 301.6 1065.5 1927 129.4 61.0 86.1 51.1 42.7 99.6 88.4 102.0 132.9 89.5 114.6 60.8 234.3 179.9 290.0 337.0 1058.1 1928 192.0 126.2 105.3 52.8 34.8 137.0 62.9 148.6 92.0 154.2 148.9 105.5 379.0 192.9 348.5 395.1 1360.2 1929 50.6 90.3 17.9 36.8 69.0 70.6 90.3 163.7 33.2 144.5 133.4 211.3 246.4 123.7 324.6 311.1 1111.6 1930 128.8 21.1 71.7 50.9 48.8 62.9 107.8 180.7 96.2 161.2 116.6 111.6 361.2 171.4 351.4 374.0 1158.3 1931 106.1 99.9 42.8 81.4 108.5 147.0 117.5 80.5 63.3 69.7 162.0 96.3 317.6 232.7 345.0 295.0 1175.0 1932 112.7 4.8 63.9 97.2 70.0 43.4 130.5 72.7 101.4 107.0 74.8 157.3 213.8 231.1 246.6 283.2 1035.7 1933 84.2 89.2 71.7 47.9 68.6 71.1 83.3 63.9 17.2 82.5 43.0 60.3 330.7 188.2 218.3 142.7 782.9 1934 108.5 11.2 65.4 83.0 84.9 54.4 68.0 142.6 156.6 139.2 34.6 161.1 180.0 233.3 265.0 330.4 1109.5 1935 56.8 116.9 40.7 81.5 30.3 111.5 37.1 68.8 134.5 146.8 130.8 96.3 334.8 152.5 217.4 412.1 1052.0 1936 128.1 64.6 69.0 27.8 46.2 88.1 186.0 74.2 120.3 91.4 121.1 118.9 289.0 143.0 348.3 332.8 1135.7 1937 158.8 137.0 69.1 68.8 39.9 62.8 119.1 92.7 85.6 60.4 45.3 94.5 414.7 177.8 274.6 191.3 1034.0 1938 137.0 51.1 48.6 8.2 82.0 114.0 141.0 69.4 78.4 182.1 158.8 122.9 282.6 138.8 324.4 419.3 1193.5 1939 107.1 92.3 102.0 65.5 29.0 66.3 129.6 46.8 66.3 74.7 156.1 95.0 322.3 196.5 242.7 297.1 1030.7 1940 103.8 85.6 125.6 112.1 35.4 36.4 124.3 29.6 85.7 132.7 138.4 139.4 284.4 273.1 190.3 356.8 1149.0 1941 63.3 95.9 98.7 52.4 60.9 14.5 97.0 123.4 35.2 134.4 132.9 63.8 298.6 212.0 234.9 302.5 972.4 1942 178.7 56.3 91.8 59.9 99.7 14.9 115.3 150.2 142.9 107.5 29.2 142.2 298.8 251.4 280.4 279.6 1188.6 1943 139.5 77.8 38.7 71.0 102.5 97.0 65.7 172.1 85.8 100.4 91.8 79.0 359.5 212.2 334.8 278.0 1121.3 1944 117.6 38.8 24.5 63.3 57.0 85.6 99.3 86.6 149.3 137.0 150.8 134.5 235.4 144.8 271.5 437.1 1144.3 1945 100.2 100.9 43.1 51.3 118.1 119.0 113.3 44.2 90.9 111.7 29.8 112.7 335.6 212.5 276.5 232.4 1035.2 1946 128.1 86.8 44.7 28.6 33.0 99.1 109.5 141.9 179.9 37.0 119.6 131.8 327.6 106.3 350.5 336.5 1140.0 1947 108.6 33.5 137.1 106.3 105.0 106.5 116.8 12.3 81.6 57.3 151.5 80.8 273.9 348.4 235.6 290.4 1097.3 1948 179.0 68.1 72.7 61.6 52.3 100.8 82.2 110.0 110.9 89.9 78.2 162.9 327.9 186.6 293.0 279.0 1168.6 1949 97.2 79.4 67.5 81.1 60.3 29.2 70.4 88.9 67.7 142.9 106.9 154.0 339.5 208.9 188.5 317.5 1045.5 1950 69.2 99.4 53.1 123.1 37.4 66.1 153.9 153.5 193.1 100.1 86.0 103.8 322.6 213.6 373.5 379.2 1238.7 1951 98.5 94.8 82.5 53.5 51.2 67.1 92.5 123.5 72.8 34.0 164.6 138.1 297.1 187.2 283.1 271.4 1073.1 1952 139.0 39.6 49.4 43.9 43.6 71.3 52.3 126.3 59.7 115.4 78.9 120.9 316.7 136.9 249.9 254.0 940.3 1953 39.9 39.6 16.3 56.0 62.2 48.7 135.7 94.2 91.0 62.7 102.4 92.7 200.4 134.5 278.6 256.1 841.4 1954 90.0 118.1 95.7 25.5 106.1 77.1 112.9 82.1 125.5 159.3 147.1 135.3 300.8 227.3 272.1 431.9 1274.7 1955 109.4 94.9 32.0 71.2 84.4 115.7 41.5 32.5 108.5 79.3 69.8 138.2 339.6 187.6 189.7 257.6 977.4 1956 95.8 45.7 51.8 38.8 40.7 87.1 117.4 181.5 100.0 80.8 67.1 140.8 279.7 131.3 386.0 247.9 1047.5 1957 136.2 78.5 88.9 40.0 58.1 45.1 125.6 125.0 139.1 106.1 42.8 144.7 355.5 187.0 295.7 288.0 1130.1 1958 118.5 124.4 48.4 48.2 80.0 142.5 132.0 129.5 110.5 83.3 57.6 141.5 387.6 176.6 404.0 251.4 1216.4 1959 70.7 30.1 79.9 88.7 35.6 65.8 96.1 36.1 45.1 127.4 126.6 160.3 242.3 204.2 198.0 299.1 962.4 1960 112.9 98.5 63.4 80.1 57.3 72.0 162.7 134.2 82.4 124.9 112.4 106.2 371.7 200.8 368.9 319.7 1207.0 1961 115.3 103.6 36.9 144.4 73.1 51.1 71.2 94.9 120.2 128.1 71.6 95.1 325.1 254.4 217.2 319.9 1105.5 1962 122.1 58.8 68.3 55.3 73.5 48.7 63.1 118.6 183.7 51.8 77.1 119.7 276.0 197.1 230.4 312.6 1040.7 1963 39.6 68.7 116.5 73.5 94.8 101.9 70.8 106.4 84.9 130.1 184.2 29.0 227.9 284.7 279.0 399.2 1100.3 1964 56.5 38.6 92.4 62.4 66.9 79.3 54.3 109.9 89.4 140.3 88.5 127.7 124.1 221.7 243.6 318.2 1006.2 1965 135.0 14.9 98.8 85.1 76.4 101.3 82.3 103.7 110.4 87.1 120.9 148.6 277.6 260.3 287.4 318.4 1164.6 1966 74.3 161.3 96.1 98.2 97.9 125.2 54.9 73.9 81.0 126.7 110.0 175.9 384.1 292.3 254.0 317.7 1275.4 1967 89.2 89.3 92.5 54.8 122.3 41.5 86.2 103.6 146.3 167.1 99.3 110.5 354.4 269.6 231.3 412.6 1202.5 1968 132.0 44.1 85.9 60.8 79.4 75.8 40.0 77.0 143.9 149.2 103.5 91.9 286.6 226.1 192.7 396.6 1083.5 1969 136.6 82.3 48.4 71.9 105.3 84.3 48.7 58.8 40.8 63.4 139.5 119.0 310.9 225.7 191.8 243.7 999.2 1970 110.9 130.5 87.4 89.2 38.4 62.7 93.0 110.6 130.3 121.7 139.0 44.0 360.4 215.0 266.3 391.1 1157.8 1971 80.5 78.1 50.8 86.7 65.3 95.7 67.8 106.9 40.5 63.8 130.1 33.9 202.7 202.9 270.4 234.5 900.3 1972 132.7 81.3 114.3 83.6 117.9 89.7 71.8 59.1 14.7 56.9 117.0 98.2 248.0 315.8 220.6 188.6 1037.2 1973 117.7 81.0 33.4 57.6 83.0 44.8 81.5 97.2 77.6 59.3 116.5 113.9 296.9 174.0 223.4 253.4 963.5 1974 168.7 102.6 57.0 28.5 83.1 49.2 96.1 83.8 154.9 73.1 113.8 126.2 385.2 168.6 229.1 341.8 1136.9 1975 162.0 35.8 61.6 66.2 20.8 32.0 73.2 53.4 127.9 93.4 83.7 41.5 324.0 148.5 158.5 305.0 851.3 1976 136.2 55.2 86.9 33.3 118.2 58.6 66.4 17.2 120.9 189.0 74.0 101.8 233.0 238.4 142.2 383.9 1057.7 1977 110.8 162.3 87.2 79.7 28.4 55.1 53.9 93.5 76.2 108.7 127.5 104.8 374.8 195.3 202.5 312.3 1088.0 1978 141.5 75.2 123.8 35.4 32.0 60.4 75.1 81.9 124.3 56.9 124.2 201.4 321.6 191.3 217.5 305.4 1132.4 1979 94.3 31.4 100.4 85.8 96.0 55.0 54.5 138.3 81.2 135.2 167.1 125.9 327.1 282.3 247.9 383.5 1165.3 1980 114.1 97.7 113.9 19.1 35.2 113.8 92.0 86.7 131.2 144.3 89.8 143.7 337.7 168.2 292.6 365.3 1181.5 1981 109.5 73.9 130.6 45.9 146.6 87.0 82.2 42.3 176.4 152.8 93.2 96.0 327.0 323.0 211.5 422.4 1236.3 1982 107.5 90.1 113.6 24.3 67.3 121.2 21.1 94.8 99.3 128.0 163.3 144.5 293.6 205.1 237.1 390.6 1174.9 1983 127.0 50.2 117.7 57.0 83.1 51.1 23.3 34.0 111.1 140.0 40.7 140.5 321.7 257.8 108.3 291.7 975.6 1984 185.7 113.4 75.4 30.5 22.6 60.2 54.1 72.8 105.9 116.7 117.0 118.7 439.6 128.5 187.2 339.5 1073.0 1985 74.8 37.7 89.9 76.0 78.6 76.6 114.9 192.2 156.2 48.4 90.6 98.4 231.3 244.5 383.7 295.2 1134.4 1986 157.1 5.6 118.0 104.5 130.3 47.6 75.6 144.2 9.7 112.4 133.6 164.1 261.1 352.8 267.4 255.8 1202.6 1987 50.3 64.4 108.1 47.5 41.1 99.3 71.2 120.0 87.9 140.5 86.4 71.7 278.7 196.7 290.5 314.8 988.4 1988 180.0 116.7 140.5 41.0 47.5 48.9 135.4 132.4 112.8 146.1 58.8 93.2 368.4 229.0 316.7 317.7 1253.3 1989 76.5 105.3 127.8 107.7 32.8 59.0 44.9 117.7 54.8 147.6 50.2 76.7 275.0 268.4 221.6 252.6 1001.0 1990 139.8 193.4 65.3 73.4 50.2 126.2 63.0 91.2 47.9 208.2 88.3 121.1 409.9 189.0 280.5 344.5 1268.2 1991 101.5 57.3 113.8 119.6 11.2 98.9 64.6 39.3 61.0 109.8 143.2 123.9 280.0 244.7 202.7 313.9 1044.0 1992 80.9 94.0 146.5 109.8 48.7 40.0 91.1 171.9 90.4 85.3 138.9 85.4 298.8 305.1 303.0 314.6 1182.9 1993 141.1 31.5 68.3 124.8 138.7 74.4 110.6 69.6 107.7 41.4 60.6 197.9 258.1 331.8 254.6 209.7 1166.7 1994 156.4 135.2 134.5 90.8 39.0 69.4 68.9 91.2 73.5 65.3 94.2 152.2 489.5 264.2 229.5 233.1 1170.6 1995 153.5 122.6 110.6 37.4 53.4 32.5 79.6 13.8 84.9 172.9 152.5 65.7 428.2 201.5 125.9 410.3 1079.3 1996 121.5 99.9 55.9 115.2 90.0 46.7 70.8 110.9 41.3 151.3 127.4 65.1 287.1 261.0 228.3 320.0 1095.8 1997 31.7 140.8 51.3 47.1 104.8 94.5 99.8 70.9 57.7 80.7 126.7 136.9 237.5 203.2 265.2 265.0 1042.8 1998 120.0 51.4 86.1 100.0 47.9 116.6 126.2 93.4 83.4 178.3 133.1 121.5 308.3 234.0 336.2 394.8 1257.9 1999 144.3 88.5 63.0 96.3 63.7 67.3 53.7 95.4 178.2 57.5 110.8 217.9 354.3 223.0 216.4 346.5 1236.7 2000 63.8 111.2 57.1 102.1 65.2 60.4 40.7 104.7 131.0 178.0 155.2 153.3 392.9 224.4 205.8 464.2 1222.7 2001 65.3 68.1 68.3 74.6 50.8 65.8 62.8 109.6 58.0 112.7 78.5 82.8 286.7 193.7 238.1 249.2 897.2 2002 126.7 164.9 73.7 102.0 135.0 119.5 104.7 57.2 42.3 200.6 192.0 89.6 374.5 310.7 281.4 435.0 1408.3 2003 108.1 68.4 48.4 52.5 127.7 85.9 93.2 22.9 65.7 52.4 115.5 95.7 266.1 228.6 202.0 233.6 936.4 2004 133.2 51.0 87.0 78.5 48.7 108.9 62.8 114.1 105.8 132.9 60.7 107.3 279.9 214.2 285.8 299.3 1090.9 2005 135.5 59.9 76.4 91.7 102.8 55.5 45.6 90.5 89.2 129.6 82.8 111.8 302.7 270.9 191.6 301.6 1071.4 2006 51.5 46.7 142.2 72.9 113.7 36.3 67.9 91.4 136.2 125.2 130.3 138.9 210.0 328.7 195.7 391.8 1153.3 2007 129.2 86.6 81.3 28.8 71.4 148.3 130.8 104.6 57.7 56.6 87.4 112.0 354.7 181.5 383.7 201.6 1094.6 2008 186.3 58.6 137.2 47.5 18.7 72.9 124.7 203.2 356.9 203.4 400.8 MIN 31.7 4.8 16.3 8.2 11.2 11.5 19.6 12.3 9.7 34.0 29.2 29.0 124.1 106.3 108.3 142.7 782.9 MAX 192.0 193.4 146.5 144.4 155.8 148.3 186.0 203.2 193.1 208.2 192.0 223.8 489.5 352.8 404.0 464.2 1408.3 6190 115.9 81.1 90.9 66.6 73.0 73.3 71.2 95.4 100.2 114.8 107.0 109.6 306.7 230.5 239.8 322.0 1099.0 7100 119.1 86.6 93.5 70.6 68.1 72.1 73.2 90.9 94.5 114.6 110.6 118.5 324.2 232.2 236.3 319.6 1112.3