Wales 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 3.9 5.0 5.8 6.5 10.6 13.6 13.6 13.9 12.2 10.1 4.2 6.2 --- 7.66 13.71 8.85 8.83 1911 4.0 4.5 4.7 6.7 12.3 13.6 16.8 17.2 13.4 9.5 5.7 6.3 4.89 7.93 15.93 9.52 9.60 1912 3.5 4.9 6.5 8.4 10.7 12.4 14.8 11.7 10.5 8.2 6.3 6.8 4.91 8.54 12.97 8.35 8.74 1913 4.4 4.6 5.4 7.2 10.1 12.6 14.0 14.6 13.3 10.6 8.1 5.1 5.28 7.58 13.77 10.65 9.19 1914 3.1 6.0 5.5 8.8 9.7 13.2 14.6 15.1 12.7 9.7 6.1 4.1 4.68 7.99 14.29 9.52 9.06 1915 3.7 3.5 4.3 7.2 10.3 13.1 13.3 14.1 12.7 8.6 2.6 5.2 3.80 7.26 13.52 7.96 8.24 1916 7.0 3.3 2.8 7.1 9.9 10.7 14.2 15.1 12.5 10.2 6.2 2.0 5.19 6.62 13.35 9.63 8.43 1917 0.9 0.7 2.8 4.7 11.4 13.0 14.9 14.1 13.0 7.3 7.6 2.5 1.19 6.32 14.00 9.26 7.77 1918 3.8 6.3 5.1 6.3 11.3 12.0 14.1 14.7 11.2 8.6 5.5 6.8 4.13 7.60 13.62 8.44 8.84 1919 3.0 1.4 2.7 6.0 12.0 12.6 13.2 14.4 11.8 7.6 2.9 5.4 3.82 6.91 13.41 7.42 7.79 1920 4.8 5.6 6.0 7.3 10.4 13.1 13.0 12.8 12.0 10.0 6.8 3.9 5.25 7.89 12.96 9.62 8.81 1921 6.7 4.3 6.4 7.4 9.9 13.5 17.0 14.0 13.0 12.2 5.1 6.2 5.01 7.90 14.84 10.10 9.68 1922 3.8 4.3 4.1 4.8 11.1 12.3 12.3 12.2 11.3 7.8 5.6 5.6 4.80 6.68 12.29 8.23 7.96 1923 5.3 5.5 5.9 6.9 8.3 11.6 15.7 13.9 11.3 9.1 3.4 4.3 5.45 7.05 13.73 7.97 8.47 1924 4.5 3.0 3.9 6.1 10.2 12.5 13.7 12.9 12.2 9.5 6.5 6.7 3.96 6.71 13.05 9.41 8.49 1925 5.3 4.5 4.4 6.6 10.1 13.8 15.3 14.5 10.8 9.9 3.2 3.0 5.53 7.03 14.50 8.00 8.46 1926 4.7 6.2 5.7 8.4 9.2 12.1 15.8 15.1 13.4 7.6 5.3 4.0 4.56 7.74 14.33 8.76 8.96 1927 4.5 3.8 6.3 7.0 10.3 11.3 14.6 14.4 11.6 9.9 5.9 1.9 4.12 7.88 13.47 9.15 8.50 1928 4.8 5.4 5.1 7.5 10.2 11.8 14.3 14.0 11.7 9.8 7.4 3.6 4.01 7.60 13.39 9.61 8.81 1929 1.6 0.5 5.6 6.1 10.2 11.8 14.4 13.7 14.0 9.0 6.4 5.5 1.95 7.32 13.30 9.80 8.29 1930 4.8 1.7 4.5 7.2 9.6 13.7 13.9 14.1 12.7 9.9 6.1 4.5 4.11 7.10 13.89 9.56 8.60 1931 3.3 3.7 3.6 6.6 9.8 13.0 13.7 13.5 11.0 8.3 7.3 5.4 3.82 6.68 13.40 8.86 8.29 1932 5.9 2.7 4.1 5.8 9.0 13.2 14.5 15.9 12.3 8.2 6.2 5.3 4.68 6.28 14.53 8.88 8.60 1933 2.1 3.4 6.6 7.7 10.7 13.9 15.9 15.9 14.0 9.4 5.1 1.1 3.59 8.33 15.27 9.50 8.84 1934 4.1 3.1 4.2 6.6 9.9 13.8 16.7 13.7 13.1 9.6 5.6 7.5 2.76 6.92 14.74 9.44 9.04 1935 4.2 5.1 5.7 7.2 9.5 13.4 15.6 14.9 12.6 8.9 5.9 2.9 5.65 7.45 14.66 9.13 8.85 1936 3.3 2.5 6.1 5.5 10.4 13.3 13.8 14.7 13.3 9.0 5.6 5.4 2.92 7.38 13.94 9.28 8.60 1937 4.8 5.1 2.9 8.5 10.8 12.6 14.4 15.5 12.4 9.5 5.0 3.0 5.07 7.38 14.20 8.99 8.73 1938 5.4 4.5 7.6 6.8 9.7 12.5 13.3 14.3 12.5 10.0 8.7 4.3 4.30 8.06 13.40 10.40 9.18 1939 3.8 5.0 5.4 7.7 10.4 13.2 13.7 15.2 13.0 7.8 8.2 3.2 4.34 7.83 14.07 9.66 8.91 1940 -0.7 2.9 5.4 7.9 11.2 15.0 13.6 14.5 11.9 9.0 6.6 4.0 1.78 8.18 14.38 9.18 8.46 1941 0.0 3.0 4.6 5.8 8.4 13.7 15.4 13.6 13.9 10.1 6.5 5.8 2.33 6.26 14.22 10.16 8.42 1942 2.0 0.4 5.3 8.6 10.1 13.1 14.0 15.1 12.7 9.7 4.9 6.8 2.82 7.97 14.08 9.13 8.61 1943 5.0 5.6 6.2 9.3 10.5 12.8 14.9 14.4 12.0 9.9 6.4 3.5 5.81 8.65 14.08 9.43 9.23 1944 5.9 3.3 4.8 9.1 10.1 12.3 15.0 15.5 11.5 8.5 6.2 4.2 4.26 8.00 14.30 8.75 8.90 1945 0.7 6.2 7.0 9.3 10.8 12.9 14.6 14.7 13.2 11.1 6.8 5.4 3.60 9.00 14.08 10.36 9.39 1946 2.8 5.6 4.6 8.8 9.7 11.4 14.2 13.0 12.9 9.2 7.8 3.3 4.55 7.69 12.88 9.93 8.61 1947 2.0 -2.3 3.0 7.3 11.5 13.6 14.7 17.2 13.6 10.0 6.9 5.0 1.12 7.29 15.21 10.16 8.62 1948 4.8 4.0 7.9 7.8 10.2 12.2 14.2 13.8 12.7 9.6 7.5 5.2 4.62 8.63 13.43 9.95 9.19 1949 5.2 5.1 5.0 8.7 10.0 14.0 16.2 15.4 14.9 11.2 6.5 5.5 5.18 7.87 15.20 10.89 9.84 1950 4.1 4.9 6.9 6.8 10.6 14.5 14.4 13.9 11.9 9.1 5.3 1.4 4.83 8.12 14.27 8.76 8.67 1951 3.6 3.2 3.5 5.9 9.0 12.8 14.9 13.5 13.1 9.4 7.6 5.4 2.71 6.14 13.74 10.03 8.52 1952 2.8 3.2 6.1 8.3 11.9 12.6 15.2 14.6 10.2 8.6 4.2 3.4 3.82 8.80 14.14 7.65 8.45 1953 3.3 3.7 5.3 6.5 11.5 13.1 14.3 14.8 13.0 9.3 8.1 7.0 3.46 7.81 14.07 10.10 9.19 1954 2.9 2.5 5.3 6.9 10.2 12.2 12.8 13.2 11.9 11.1 6.7 6.3 4.22 7.47 12.74 9.92 8.55 1955 2.6 0.9 2.8 8.3 8.8 12.8 16.4 17.1 13.3 8.8 6.4 5.7 3.36 6.58 15.47 9.48 8.70 1956 3.8 -0.4 5.8 6.4 10.5 12.1 14.5 12.6 13.4 9.0 6.0 5.6 3.11 7.56 13.05 9.49 8.31 1957 4.9 4.7 8.7 8.2 9.8 13.9 15.0 14.4 11.8 10.3 5.9 4.4 5.08 8.91 14.47 9.35 9.38 1958 3.7 4.8 3.3 6.6 9.9 12.5 14.4 14.4 14.0 10.1 6.6 4.4 4.25 6.62 13.79 10.22 8.74 1959 2.2 4.5 6.6 8.3 11.8 13.6 15.3 15.6 13.9 11.8 6.9 5.5 3.71 8.88 14.87 10.90 9.71 1960 3.9 3.3 5.8 7.8 11.8 14.6 13.8 13.7 12.1 9.3 6.6 3.5 4.25 8.50 14.06 9.31 8.88 1961 3.3 6.3 7.3 8.9 9.9 12.7 13.7 14.1 14.0 9.9 6.0 2.3 4.32 8.71 13.51 9.97 9.05 1962 4.2 3.9 2.1 6.7 9.0 12.3 13.7 13.1 11.7 9.7 5.2 2.6 3.44 5.92 13.03 8.87 7.87 1963 -2.5 -1.2 5.4 7.5 9.3 13.7 13.8 13.2 12.0 10.2 7.4 2.5 -0.33 7.37 13.54 9.88 7.64 1964 3.5 3.8 3.8 7.5 11.8 12.4 14.3 14.1 13.2 8.3 7.2 3.3 3.24 7.71 13.61 9.57 8.62 1965 3.1 2.4 4.5 7.2 10.3 12.9 12.9 13.9 11.0 10.4 4.1 4.7 2.97 7.35 13.22 8.53 8.16 1966 2.7 5.1 5.9 6.3 10.0 13.8 13.7 13.6 12.9 9.4 5.0 5.5 4.14 7.40 13.71 9.09 8.68 1967 4.2 4.6 5.9 7.0 9.0 13.1 14.8 14.3 12.5 9.7 5.2 4.3 4.79 7.29 14.08 9.13 8.74 1968 4.4 1.4 5.3 6.7 8.7 13.5 13.9 14.6 12.7 11.8 6.1 3.0 3.40 6.91 14.02 10.22 8.54 1969 5.0 0.4 2.9 6.7 9.9 12.7 14.9 14.8 12.7 12.2 4.9 3.2 2.88 6.51 14.15 9.98 8.41 1970 3.7 2.5 3.2 5.6 11.6 14.9 13.6 14.7 13.3 9.8 7.4 4.0 3.15 6.81 14.40 10.21 8.74 1971 4.4 4.1 4.5 7.0 10.4 11.3 15.7 14.4 13.8 10.9 6.0 6.2 4.14 7.30 13.85 10.25 9.09 1972 3.5 3.8 5.8 7.3 9.0 10.0 14.3 13.6 10.8 9.8 6.0 5.7 4.51 7.34 12.70 8.88 8.33 1973 4.4 4.0 5.4 6.1 10.3 13.4 14.2 15.5 13.2 8.8 6.4 4.9 4.70 7.28 14.38 9.45 8.91 1974 5.4 4.8 4.8 7.6 9.6 12.4 13.5 13.6 10.7 7.2 6.1 7.2 5.06 7.34 13.19 8.00 8.61 1975 6.1 4.4 4.1 7.3 9.1 13.6 15.9 16.7 11.9 9.5 6.1 5.1 5.97 6.85 15.41 9.15 9.18 1976 5.2 3.8 4.0 7.1 10.4 14.9 16.5 16.4 12.0 9.3 6.0 2.0 4.70 7.16 15.94 9.07 8.97 1977 2.4 4.6 6.2 6.1 9.6 11.4 14.8 14.2 11.9 11.1 5.6 5.7 2.94 7.30 13.50 9.53 8.66 1978 3.3 2.2 5.7 5.6 10.8 12.2 13.4 13.7 12.7 11.3 7.9 3.8 3.77 7.38 13.09 10.65 8.59 1979 0.2 0.8 3.6 6.6 8.1 12.5 14.5 13.4 12.0 10.5 6.6 5.3 1.64 6.10 13.50 9.73 7.90 1980 2.0 5.5 4.0 7.8 10.4 12.3 13.4 14.4 13.4 8.2 5.9 5.3 4.25 7.40 13.37 9.17 8.56 1981 4.6 2.6 7.0 7.2 10.0 12.0 14.1 15.2 13.3 7.5 7.3 0.8 4.23 8.10 13.77 9.34 8.50 1982 2.9 4.6 5.3 7.7 10.3 14.2 15.2 14.3 13.1 9.5 7.3 4.2 2.72 7.80 14.54 9.95 9.07 1983 6.0 1.5 5.8 5.8 9.1 13.1 18.1 16.2 12.6 9.6 7.1 5.8 3.99 6.90 15.83 9.76 9.28 1984 3.5 3.3 4.0 7.8 9.3 13.4 15.5 16.4 12.6 10.3 7.0 5.1 4.22 7.03 15.10 9.95 9.03 1985 0.7 2.3 4.1 7.4 9.8 11.4 14.7 13.2 13.7 10.0 3.9 6.0 2.73 7.11 13.13 9.21 8.15 1986 3.3 -1.4 4.4 4.7 9.7 13.7 14.1 12.2 10.3 10.1 7.2 5.8 2.75 6.30 13.33 9.19 7.90 1987 0.9 3.3 3.7 9.3 9.3 11.5 14.7 14.5 12.6 8.9 6.3 5.3 3.34 7.41 13.57 9.23 8.37 1988 5.1 4.3 5.7 7.4 10.7 13.7 13.2 13.6 12.0 9.7 5.4 7.3 4.88 7.97 13.51 9.07 9.04 1989 5.9 5.5 6.5 5.6 12.1 13.2 16.8 15.1 13.1 10.9 6.5 4.3 6.25 8.11 15.05 10.18 9.66 1990 6.2 6.7 7.4 7.2 11.9 12.3 15.8 16.4 11.9 11.0 6.2 4.0 5.70 8.85 14.90 9.72 9.79 1991 2.8 1.3 7.0 7.1 10.2 10.9 15.8 15.4 13.6 9.2 6.2 4.9 2.74 8.10 14.05 9.69 8.75 1992 3.5 5.3 6.6 7.7 12.5 14.4 14.9 13.7 12.1 7.1 7.1 3.7 4.53 8.91 14.33 8.73 9.04 1993 5.5 4.7 5.8 8.7 10.3 13.7 13.8 13.2 11.4 7.2 4.6 5.1 4.63 8.27 13.54 7.72 8.68 1994 4.8 2.8 6.6 7.0 9.7 12.6 15.7 14.2 11.6 9.7 9.6 6.4 4.27 7.76 14.17 10.29 9.25 1995 4.5 5.8 4.7 8.0 10.3 13.2 16.9 18.0 12.5 12.2 7.2 2.2 5.56 7.66 16.07 10.65 9.66 1996 4.0 2.1 4.1 7.5 8.0 12.8 14.9 14.9 12.7 10.7 5.6 2.6 2.81 6.54 14.20 9.69 8.36 1997 2.2 5.8 7.3 8.3 10.7 12.7 15.2 17.1 13.1 9.7 8.1 5.5 3.47 8.77 15.04 10.31 9.67 1998 4.7 6.8 7.3 6.7 12.1 12.9 14.0 14.5 13.6 9.8 6.2 5.3 5.63 8.74 13.83 9.86 9.51 1999 5.1 4.9 6.4 8.5 11.8 12.4 16.2 15.0 14.0 9.9 7.2 4.8 5.13 8.90 14.58 10.40 9.73 2000 4.4 5.6 6.6 6.8 11.1 13.5 14.5 15.1 13.6 9.3 6.3 5.2 4.91 8.18 14.40 9.76 9.36 2001 3.1 3.9 4.5 6.7 11.5 13.0 15.2 15.2 12.7 12.3 7.3 3.6 4.08 7.57 14.47 10.79 9.11 2002 5.5 6.2 6.8 8.1 10.7 12.7 14.2 15.2 13.1 9.4 8.4 5.2 5.06 8.55 14.06 10.29 9.65 2003 4.1 3.6 7.0 9.1 10.6 14.4 15.9 16.6 13.1 8.3 7.7 4.8 4.34 8.91 15.61 9.69 9.64 2004 4.9 4.6 5.7 8.5 11.1 14.1 14.3 16.1 13.8 9.7 7.6 5.8 4.79 8.44 14.85 10.36 9.70 2005 5.9 3.8 6.7 8.2 10.3 14.2 15.5 14.9 14.0 12.0 5.9 4.8 5.21 8.39 14.87 10.66 9.72 2006 4.0 3.4 4.4 7.9 11.0 14.7 17.8 15.0 15.2 11.9 7.6 6.1 4.08 7.76 15.84 11.57 9.95 2007 6.6 5.4 6.4 10.4 11.0 14.2 14.0 14.4 13.0 10.5 7.4 5.0 6.05 9.28 14.19 10.31 9.89 2008 6.2 5.2 5.6 7.2 12.7 12.8 15.1 14.9 12.4 9.2 6.9 3.5 5.45 8.52 14.28 9.50 9.32 2009 2.9 4.0 6.2 8.7 10.8 14.0 14.9 15.1 12.9 11.0 8.0 3.0 3.42 8.56 14.68 10.64 9.31 2010 1.2 2.5 5.1 8.1 10.0 14.2 15.4 14.1 13.0 9.8 4.7 -0.5 2.21 7.72 14.56 9.16 8.15 2011 3.1 6.1 6.1 10.9 11.1 12.6 14.1 14.1 13.9 11.8 9.1 6.1 2.80 9.34 13.63 11.58 9.93 2012 5.5 4.1 7.9 6.5 10.9 12.8 14.2 15.4 12.0 9.0 6.1 4.8 5.27 8.46 14.14 9.02 9.12 2013 3.7 3.0 2.4 6.4 9.3 12.8 17.2 15.5 13.1 11.9 6.2 6.3 3.87 6.02 15.20 10.42 9.02 2014 5.4 5.5 6.8 9.2 11.3 14.1 16.2 14.0 14.1 11.5 7.8 5.2 5.71 9.13 14.77 11.15 10.12 2015 4.5 3.5 5.5 8.4 9.8 13.0 14.4 14.4 11.8 10.1 9.1 9.2 4.43 7.92 13.92 10.34 9.51 2016 5.4 4.5 5.3 6.9 11.8 14.5 15.2 15.6 14.6 10.1 5.5 6.3 6.40 8.02 15.11 10.06 9.66 2017 4.5 5.7 7.6 8.2 12.4 14.7 15.3 14.5 12.6 11.6 6.7 5.0 5.47 9.39 14.84 10.33 9.93 2018 4.9 2.7 4.1 8.7 11.8 15.4 17.2 15.2 12.5 9.6 7.5 7.0 4.25 8.18 15.95 9.88 9.76 2019 4.3 6.4 7.0 8.8 10.2 5.88 8.66