Northern_Ireland Mean Temperature (Degrees C) Areal series, starting from 1910 Allowances have been made for topographic, coastal and urban effects where relationships are found to exist. Seasons: Winter=Dec-Feb, Spring=Mar-May, Summer=June-Aug, Autumn=Sept-Nov. (Winter: Year refers to Jan/Feb). Monthly values are ranked and displayed to 1 dp and seasonal/annual values to 2 dp. Where values are equal, rankings are based in order of year descending. Data are provisional from January 2018 and Winter 2018. Last updated 04/06/2019. Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC WIN SPR SUM AUT ANN 1910 3.3 3.9 5.4 5.8 9.5 12.6 12.9 13.5 11.7 10.0 3.6 5.4 --- 6.92 13.00 8.43 8.16 1911 4.2 4.4 4.6 6.8 11.0 12.2 14.8 15.0 11.8 8.6 5.1 4.7 4.66 7.48 14.01 8.53 8.63 1912 3.8 4.2 5.9 8.1 10.0 12.0 12.6 10.8 10.4 7.8 6.0 5.5 4.24 8.01 11.79 8.09 8.11 1913 4.1 4.9 4.6 6.7 9.4 11.6 12.7 13.6 12.4 10.1 7.2 4.6 4.80 6.90 12.66 9.88 8.50 1914 3.9 5.2 4.5 8.4 9.3 12.6 13.9 14.3 11.9 9.7 5.9 2.8 4.54 7.40 13.61 9.18 8.55 1915 3.0 2.8 4.9 7.4 8.9 12.5 13.0 13.3 12.3 8.5 3.9 3.8 2.86 7.03 12.91 8.24 7.87 1916 6.2 2.9 2.9 6.7 9.2 10.5 13.7 15.0 12.5 9.5 6.3 2.7 4.33 6.27 13.07 9.43 8.19 1917 2.2 2.9 3.7 4.5 10.1 12.2 14.5 14.1 12.5 6.6 7.2 3.0 2.59 6.13 13.60 8.74 7.82 1918 3.4 5.9 5.4 6.2 10.7 12.2 13.4 14.2 9.5 7.8 5.7 6.0 4.06 7.44 13.29 7.66 8.39 1919 3.1 2.6 2.8 6.9 11.3 11.8 12.7 13.7 11.0 8.2 3.0 4.3 3.96 6.98 12.76 7.40 7.66 1920 4.0 5.3 5.2 6.2 9.7 12.4 12.3 12.2 11.8 10.0 7.5 3.6 4.51 7.02 12.31 9.76 8.35 1921 6.0 5.2 5.6 7.2 9.4 13.0 15.7 12.8 12.3 11.2 6.7 6.7 4.91 7.40 13.86 10.11 9.35 1922 4.2 4.9 4.6 4.2 10.9 11.6 11.8 11.9 10.8 8.3 6.6 5.1 5.26 6.56 11.76 8.55 7.91 1923 5.5 5.4 6.1 6.4 7.7 11.5 14.8 12.9 10.8 8.5 3.2 4.3 5.33 6.75 13.10 7.54 8.13 1924 4.8 4.1 3.9 5.8 9.4 12.2 13.3 12.9 11.1 8.7 7.3 6.1 4.42 6.37 12.80 9.03 8.32 1925 5.2 3.7 5.0 6.0 9.1 12.8 14.3 13.9 10.6 9.7 4.8 3.5 5.04 6.70 13.68 8.38 8.24 1926 4.8 5.8 5.8 8.4 8.9 12.1 14.9 14.4 12.6 7.4 5.2 4.3 4.65 7.69 13.82 8.43 8.74 1927 4.3 4.8 6.3 6.8 9.5 10.0 13.8 14.0 10.9 9.8 5.8 3.5 4.46 7.55 12.61 8.85 8.31 1928 4.5 5.4 5.0 6.8 9.8 10.9 13.7 12.9 11.1 9.3 6.6 4.4 4.43 7.21 12.52 9.02 8.38 1929 2.9 3.3 6.5 6.3 9.8 11.7 13.9 13.3 13.5 8.4 5.9 4.3 3.54 7.52 13.01 9.24 8.35 1930 3.6 2.0 4.5 7.2 9.8 12.8 13.5 13.3 11.9 9.0 5.3 4.3 3.38 7.18 13.19 8.77 8.15 1931 3.3 3.6 4.3 6.9 9.8 12.4 13.5 12.9 10.7 8.4 6.7 6.2 3.76 7.01 12.93 8.62 8.26 1932 6.2 4.0 5.0 5.8 9.5 13.1 14.2 14.0 11.0 7.9 6.1 5.5 5.53 6.74 13.79 8.33 8.54 1933 2.8 3.7 6.4 8.3 9.8 13.2 15.5 14.9 12.9 9.3 5.5 4.0 4.02 8.19 14.53 9.23 8.89 1934 5.0 4.7 4.3 5.9 9.6 13.2 15.7 13.1 12.0 8.6 5.9 7.2 4.57 6.63 13.99 8.85 8.80 1935 4.8 5.0 6.2 6.9 9.6 12.4 14.3 14.3 11.7 8.3 5.0 2.6 5.67 7.56 13.66 8.32 8.43 1936 2.5 3.0 6.1 5.7 9.7 12.6 13.5 14.7 12.7 9.1 4.9 4.9 2.68 7.18 13.62 8.87 8.29 1937 4.5 4.1 2.8 7.9 10.5 12.2 13.6 14.6 11.6 8.2 6.1 3.1 4.53 7.07 13.45 8.64 8.29 1938 4.7 4.8 8.5 7.1 9.2 11.9 13.1 13.6 12.5 9.2 7.6 3.7 4.18 8.27 12.87 9.76 8.84 1939 3.0 5.7 5.6 7.6 10.3 12.7 13.5 14.2 12.3 7.8 7.4 3.6 4.06 7.85 13.49 9.14 8.65 1940 1.3 3.8 5.3 7.7 10.9 14.4 12.9 14.1 11.2 8.6 5.8 4.0 2.87 7.96 13.78 8.56 8.34 1941 0.9 3.1 4.7 5.6 8.6 13.3 14.2 13.1 13.9 9.9 6.0 5.4 2.61 6.30 13.54 9.95 8.25 1942 3.7 2.6 5.0 8.0 9.6 12.6 13.6 14.1 11.6 8.7 5.3 6.1 3.92 7.52 13.44 8.53 8.44 1943 4.9 6.0 6.5 9.2 10.0 12.9 14.3 13.5 11.7 9.7 6.4 4.8 5.67 8.54 13.58 9.25 9.17 1944 6.2 4.0 5.1 9.3 10.3 12.1 14.5 14.8 11.2 8.3 5.6 4.4 5.04 8.21 13.83 8.39 8.84 1945 0.7 6.8 8.2 8.9 10.3 12.6 14.5 14.5 13.1 10.5 7.5 6.0 3.86 9.13 13.87 10.35 9.47 1946 3.7 5.3 5.5 8.3 9.5 11.8 13.8 12.5 12.5 9.3 7.0 3.3 4.98 7.76 12.71 9.58 8.55 1947 3.0 -0.5 2.5 7.3 11.0 13.1 14.0 16.6 12.8 10.7 6.7 4.9 2.02 6.92 14.56 10.07 8.56 1948 3.5 4.6 7.9 8.2 9.6 11.9 13.7 13.6 12.4 9.5 7.9 5.3 4.33 8.56 13.07 9.91 9.01 1949 5.7 5.7 5.8 8.7 9.7 13.8 14.8 14.6 13.9 10.5 6.3 5.1 5.56 8.05 14.43 10.25 9.57 1950 5.3 4.0 7.1 6.5 10.4 14.0 14.1 13.5 11.3 8.8 4.4 1.4 4.82 8.05 13.86 8.17 8.44 1951 3.3 2.5 3.8 5.9 8.6 12.4 14.2 13.3 12.6 10.0 7.1 5.1 2.41 6.11 13.30 9.88 8.26 1952 2.3 3.8 6.3 8.5 11.2 12.3 14.7 14.0 9.9 8.5 4.7 3.4 3.74 8.67 13.69 7.71 8.32 1953 4.3 5.3 5.2 6.2 11.6 12.8 13.7 14.0 13.3 9.4 7.5 6.8 4.28 7.68 13.51 10.06 9.19 1954 4.0 3.2 5.5 7.3 10.1 11.9 12.6 12.8 10.9 10.2 5.7 6.4 4.71 7.61 12.44 8.96 8.42 1955 2.5 1.2 3.4 8.8 8.9 12.0 15.5 16.1 13.2 8.6 7.5 5.3 3.43 7.03 14.58 9.76 8.63 1956 3.1 1.8 6.4 6.9 10.7 11.7 14.0 12.0 12.6 9.2 6.8 6.1 3.44 8.00 12.57 9.52 8.46 1957 4.6 4.2 8.2 7.7 9.5 13.3 13.9 13.7 11.3 9.3 6.1 4.9 4.98 8.46 13.62 8.90 8.91 1958 3.6 4.3 3.4 7.1 9.1 12.1 14.3 13.8 13.6 10.0 7.4 4.2 4.27 6.51 13.44 10.32 8.59 1959 1.5 5.2 6.8 7.8 11.5 13.4 14.7 15.0 13.3 11.3 6.1 4.8 3.58 8.74 14.37 10.24 9.32 1960 3.9 2.8 6.0 8.4 11.8 14.3 13.6 13.2 11.8 9.3 6.3 2.9 3.87 8.74 13.68 9.15 8.71 1961 3.5 6.6 8.1 8.0 9.8 12.5 12.8 13.1 12.6 9.2 5.6 2.4 4.26 8.68 12.81 9.16 8.71 1962 3.8 4.7 2.8 7.0 9.2 11.8 13.1 12.8 11.1 10.0 5.7 4.1 3.58 6.32 12.56 8.93 8.01 1963 -0.3 0.7 5.9 7.4 9.0 13.3 13.3 12.9 11.5 10.1 6.4 3.3 1.51 7.40 13.17 9.34 7.82 1964 4.8 4.3 4.7 7.9 11.4 12.1 13.9 13.5 12.5 8.6 6.8 3.7 4.14 7.99 13.20 9.28 8.70 1965 2.6 3.4 4.7 7.2 10.3 12.7 12.4 13.0 10.8 10.2 3.9 4.0 3.23 7.39 12.70 8.30 7.95 1966 3.3 4.5 6.6 5.9 9.9 13.6 13.4 12.9 12.8 8.5 4.7 4.7 3.91 7.44 13.33 8.66 8.42 1967 4.7 4.8 5.7 7.4 8.4 12.5 13.9 13.4 12.1 8.7 5.5 4.6 4.74 7.15 13.28 8.77 8.49 1968 4.7 1.7 5.5 7.0 8.2 13.0 13.1 14.0 12.2 11.4 6.1 3.8 3.72 6.90 13.34 9.92 8.41 1969 4.1 0.8 3.1 6.6 9.5 12.3 14.5 14.3 12.2 11.9 3.9 3.9 2.99 6.37 13.76 9.36 8.15 1970 3.5 2.3 4.0 6.0 11.3 14.6 12.9 14.3 12.3 9.7 6.3 4.5 3.26 7.10 13.89 9.41 8.50 1971 4.7 5.0 5.2 7.2 9.9 11.2 14.5 13.7 13.1 10.9 6.5 6.4 4.71 7.44 13.16 10.17 9.05 1972 3.2 4.0 5.1 7.5 9.0 10.1 13.8 12.7 10.8 10.0 5.3 5.4 4.54 7.20 12.25 8.73 8.10 1973 5.0 3.9 5.7 6.5 9.5 13.0 14.1 14.4 12.5 8.7 5.7 4.8 4.82 7.24 13.83 8.96 8.68 1974 5.4 4.8 5.0 7.8 9.6 11.9 13.0 13.4 10.1 7.4 5.1 6.7 5.00 7.45 12.79 7.55 8.38 1975 5.4 4.8 4.5 7.6 9.0 13.0 15.1 15.7 11.3 9.9 6.1 5.4 5.65 7.01 14.60 9.13 9.01 1976 5.3 4.6 5.0 7.7 9.7 14.3 15.5 15.3 12.0 8.6 5.4 1.8 5.12 7.43 15.02 8.65 8.76 1977 2.4 3.5 6.2 6.4 9.2 11.5 14.9 13.7 11.4 10.8 4.5 5.6 2.56 7.28 13.41 8.92 8.39 1978 3.1 2.8 5.5 6.1 10.6 11.9 13.2 13.6 12.7 11.2 7.5 3.8 3.86 7.41 12.91 10.47 8.54 1979 0.5 2.0 3.5 6.1 7.7 12.3 14.0 12.9 11.7 10.2 6.2 4.3 2.11 5.77 13.07 9.39 7.65 1980 2.4 4.7 4.1 8.0 10.6 12.0 13.1 14.1 13.0 8.2 6.3 5.2 3.79 7.55 13.09 9.16 8.49 1981 5.1 3.8 6.5 7.6 10.0 11.9 13.5 14.5 12.6 6.5 6.8 1.6 4.72 8.04 13.30 8.62 8.38 1982 3.5 4.8 5.4 8.1 9.8 13.3 14.6 13.6 11.9 9.0 5.8 3.9 3.23 7.77 13.85 8.88 8.66 1983 5.3 2.7 6.2 5.5 9.0 12.5 16.5 15.9 12.0 9.4 7.1 6.3 4.00 6.91 14.99 9.50 9.08 1984 2.4 4.3 4.4 7.9 9.1 13.1 14.8 15.3 11.8 9.2 5.7 5.0 4.31 7.13 14.41 8.91 8.59 1985 0.8 3.4 4.4 7.7 9.3 11.3 13.9 12.5 12.9 10.0 3.7 5.3 3.06 7.11 12.59 8.86 7.95 1986 3.0 0.5 4.7 4.9 9.3 13.1 13.6 11.5 10.6 9.5 6.5 4.9 3.04 6.31 12.72 8.86 7.72 1987 2.6 3.6 4.2 8.6 9.4 10.9 14.5 13.9 11.5 7.7 6.4 5.5 3.68 7.38 13.12 8.51 8.25 1988 3.9 4.1 5.8 7.9 10.2 13.5 13.1 13.3 11.8 9.3 5.6 7.2 4.51 7.97 13.33 8.90 8.83 1989 6.4 5.0 5.7 5.7 10.8 12.7 16.3 14.1 12.0 10.4 6.1 3.7 6.24 7.42 14.37 9.49 9.10 1990 5.4 5.1 7.5 7.2 11.4 12.0 14.8 15.1 11.2 10.2 6.0 3.9 4.71 8.70 13.97 9.12 9.17 1991 2.9 2.5 6.7 7.2 10.3 10.9 15.6 15.0 12.9 8.8 5.9 5.6 3.14 8.09 13.90 9.18 8.75 1992 4.6 5.2 6.6 7.3 11.4 14.2 14.1 13.0 10.9 6.8 6.3 3.8 5.15 8.44 13.77 7.98 8.70 1993 5.0 6.0 5.8 8.3 9.7 13.1 13.2 12.8 11.3 7.0 5.1 4.1 4.91 7.96 13.03 7.81 8.47 1994 4.2 2.9 6.0 6.8 9.3 11.8 14.6 13.5 11.4 9.5 8.8 5.5 3.75 7.38 13.29 9.90 8.72 1995 3.8 5.1 4.5 8.0 9.9 13.3 15.9 17.1 12.4 11.4 7.5 2.8 4.80 7.46 15.46 10.46 9.34 1996 5.3 2.9 4.6 7.7 8.0 12.6 14.2 14.1 12.7 10.3 5.0 3.5 3.69 6.77 13.64 9.35 8.43 1997 3.9 5.2 7.2 8.5 10.3 12.0 14.9 16.1 12.4 9.7 7.8 5.9 4.18 8.66 14.37 9.98 9.53 1998 4.6 7.5 7.2 6.7 11.1 12.3 13.6 14.2 13.1 9.3 6.3 5.5 5.97 8.37 13.37 9.59 9.31 1999 4.2 5.1 6.4 8.5 11.3 11.9 15.5 14.3 13.4 10.0 7.0 4.0 4.92 8.71 13.93 10.11 9.31 2000 4.8 5.3 7.0 6.4 10.7 12.8 14.4 14.8 13.0 8.8 5.4 4.5 4.70 8.03 14.01 9.07 9.01 2001 3.1 3.8 4.3 6.9 11.6 12.2 14.3 14.3 12.6 11.7 7.8 4.1 3.81 7.59 13.62 10.71 8.92 2002 6.1 5.6 6.8 8.1 10.6 12.8 13.6 14.9 12.8 8.7 7.7 4.9 5.23 8.50 13.77 9.74 9.40 2003 4.2 4.2 6.7 9.0 10.2 13.6 15.6 15.6 12.7 8.5 7.2 5.0 4.44 8.63 14.95 9.42 9.40 2004 4.8 4.6 6.1 8.4 10.9 13.9 13.8 15.3 13.1 8.4 7.9 5.8 4.82 8.46 14.35 9.82 9.43 2005 5.9 4.5 7.3 7.8 9.7 14.1 15.0 14.5 13.3 11.1 6.1 5.3 5.40 8.26 14.54 10.19 9.58 2006 4.7 4.5 4.9 7.3 10.4 14.2 16.7 14.6 14.2 11.5 6.8 5.6 4.86 7.54 15.16 10.82 9.64 2007 6.0 5.1 6.1 10.2 10.7 13.5 13.9 14.1 12.5 11.0 8.1 5.7 5.58 8.97 13.85 10.58 9.77 2008 5.2 5.5 5.5 7.5 12.3 12.6 14.7 14.6 12.0 8.4 6.5 3.8 5.46 8.45 13.99 8.96 9.06 2009 3.5 4.7 6.3 8.7 10.5 13.6 14.6 14.5 12.5 10.7 6.7 2.4 3.96 8.49 14.25 9.97 9.08 2010 1.7 2.0 4.9 8.1 10.0 14.3 14.9 13.5 12.8 9.3 4.2 -0.7 2.04 7.67 14.21 8.80 7.95 2011 2.9 5.8 6.0 10.6 10.7 11.8 13.7 13.3 13.0 10.7 8.7 5.0 2.57 9.07 12.95 10.81 9.36 2012 5.5 6.2 8.1 6.4 10.5 12.0 13.5 15.1 11.8 7.9 5.5 4.3 5.55 8.37 13.52 8.38 8.91 2013 4.4 3.9 2.8 6.5 9.6 13.0 17.0 15.0 12.7 10.8 5.8 5.9 4.21 6.30 15.03 9.79 8.99 2014 4.5 4.7 6.3 9.6 11.3 13.8 15.7 13.4 13.3 10.3 7.2 4.5 5.05 9.08 14.30 10.28 9.59 2015 3.7 3.9 5.6 7.7 9.1 12.3 13.3 13.6 11.8 9.8 7.9 6.9 4.05 7.46 13.09 9.85 8.83 2016 5.0 4.0 6.0 6.3 11.2 14.2 14.6 15.0 13.6 10.0 5.1 6.4 5.35 7.87 14.61 9.57 9.32 2017 5.2 5.3 7.2 8.2 12.1 13.8 14.4 13.9 11.9 10.8 5.8 4.7 5.64 9.17 14.05 9.53 9.47 2018 3.9 2.9 3.9 7.9 11.8 14.9 15.8 14.4 11.5 9.2 7.2 6.4 3.88 7.89 15.02 9.28 9.19 2019 5.1 6.6 6.7 8.5 9.9 6.03 8.36