Wales Maximum 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 6.1 7.2 8.9 9.6 14.5 17.1 17.3 16.9 15.6 12.5 6.9 8.0 --- 11.02 17.10 11.71 11.76 1911 5.8 6.5 7.5 9.7 16.2 17.8 21.7 21.4 17.3 12.4 8.2 8.2 6.79 11.18 20.31 12.64 12.78 1912 6.0 7.5 9.1 12.5 14.4 16.0 18.4 15.0 13.7 11.6 8.4 9.1 7.23 11.97 16.46 11.28 11.82 1913 6.7 7.2 8.5 10.4 13.8 16.5 17.6 18.5 16.5 13.5 10.6 7.0 7.67 10.90 17.51 13.53 12.25 1914 5.6 8.7 8.4 13.2 13.8 17.6 18.5 19.1 17.0 12.9 9.1 6.8 7.04 11.82 18.42 13.01 12.59 1915 5.9 6.4 7.7 10.8 15.1 18.0 16.9 17.7 17.0 11.9 6.0 7.8 6.36 11.19 17.53 11.62 11.79 1916 9.2 5.7 5.5 11.1 14.1 14.5 18.3 19.2 16.0 12.9 8.8 4.8 7.59 10.23 17.36 12.56 11.70 1917 2.7 3.8 6.1 8.4 16.3 17.5 19.3 17.1 16.2 10.7 9.9 5.0 3.77 10.31 17.98 12.25 11.13 1918 6.4 8.4 8.7 10.1 16.2 16.6 18.4 18.3 14.3 11.5 8.5 9.1 6.56 11.69 17.77 11.40 12.24 1919 5.4 3.9 5.7 9.6 16.8 16.7 17.4 18.5 15.6 11.3 5.7 7.9 6.22 10.72 17.54 10.86 11.26 1920 7.6 8.4 9.3 10.0 14.2 17.3 16.0 16.1 15.8 13.3 9.7 6.4 7.97 11.19 16.46 12.95 12.02 1921 8.9 7.1 9.3 11.9 14.5 18.6 22.2 17.6 17.7 16.3 8.0 8.7 7.46 11.91 19.50 13.99 13.44 1922 6.5 7.1 7.0 8.7 15.8 16.7 15.8 15.7 14.8 11.2 8.7 7.6 7.45 10.51 16.07 11.56 11.32 1923 7.6 7.8 9.0 10.3 11.9 15.0 19.3 17.4 14.9 11.8 6.4 6.9 7.64 10.40 17.26 11.02 11.54 1924 6.9 5.6 7.9 9.9 13.8 16.1 17.4 16.3 15.1 12.5 9.1 8.9 6.46 10.54 16.58 12.25 11.64 1925 7.7 7.2 7.4 10.2 13.6 19.1 19.5 18.1 14.2 13.3 6.4 5.5 7.94 10.39 18.90 11.30 11.87 1926 7.1 8.5 8.7 12.3 13.2 16.5 19.8 18.9 16.9 10.9 8.4 6.4 6.97 11.38 18.41 12.05 12.32 1927 6.9 6.9 9.2 10.4 14.9 15.2 18.2 18.0 14.7 13.3 8.5 3.7 6.71 11.51 17.16 12.20 11.69 1928 7.7 8.1 8.1 11.4 14.6 15.7 18.2 17.8 15.9 12.9 10.1 6.4 6.46 11.35 17.26 12.99 12.26 1929 4.1 3.1 10.9 10.2 14.9 16.1 18.8 17.4 18.5 12.1 9.5 8.1 4.58 11.98 17.44 13.34 12.01 1930 7.6 4.2 7.5 10.4 13.5 18.4 17.4 17.9 15.9 12.7 9.1 7.0 6.71 10.47 17.89 12.57 11.85 1931 5.9 6.3 7.4 9.6 13.7 16.6 17.1 17.1 14.4 12.1 9.9 7.8 6.43 10.23 16.96 12.13 11.53 1932 8.5 5.6 7.8 9.1 12.4 18.1 17.8 19.8 15.8 11.5 8.6 7.6 7.34 9.79 18.58 11.98 11.92 1933 5.0 6.4 10.6 11.7 15.0 18.6 20.4 20.4 18.7 12.5 7.8 3.5 6.31 12.42 19.81 13.00 12.57 1934 7.1 6.4 7.7 10.2 14.1 18.4 21.7 17.7 17.0 12.3 8.0 9.5 5.62 10.68 19.28 12.42 12.54 1935 6.5 7.7 9.1 10.8 14.3 17.3 19.8 19.4 16.0 11.8 8.8 5.4 7.90 11.38 18.88 12.18 12.27 1936 5.8 5.2 9.0 9.1 14.9 17.4 17.0 18.6 16.7 12.4 8.5 8.0 5.48 10.98 17.65 12.52 11.89 1937 7.3 7.4 6.0 11.8 15.1 16.7 18.0 20.1 16.3 12.8 7.9 5.5 7.60 10.97 18.30 12.33 12.11 1938 7.9 7.0 11.2 11.5 13.8 16.2 16.9 18.1 16.3 12.9 11.2 6.6 6.78 12.16 17.05 13.46 12.49 1939 6.1 7.8 8.1 11.7 14.8 17.9 17.0 19.3 16.8 11.3 10.7 5.7 6.81 11.53 18.06 12.91 12.28 1940 2.6 5.5 8.9 11.5 15.9 20.4 17.6 18.6 16.0 12.2 9.2 6.5 4.60 12.11 18.87 12.46 12.10 1941 2.3 5.9 8.2 9.3 12.8 18.2 19.9 17.1 17.6 13.4 9.4 8.2 4.88 10.13 18.41 13.47 11.89 1942 4.8 3.7 8.7 13.0 14.7 18.0 17.9 18.8 16.3 12.8 8.1 9.1 5.60 12.11 18.24 12.38 12.20 1943 7.5 8.3 9.9 13.2 15.1 16.7 19.5 17.9 15.7 13.4 9.1 6.0 8.29 12.74 18.05 12.74 12.72 1944 8.4 5.9 8.6 13.2 15.0 16.1 18.5 19.8 15.4 11.4 9.0 6.8 6.78 12.24 18.18 11.93 12.36 1945 3.5 9.0 10.5 13.6 15.0 16.7 18.3 18.7 16.5 14.5 9.4 7.7 6.35 13.04 17.93 13.49 12.81 1946 5.7 7.7 8.3 13.1 14.3 15.1 18.0 16.4 15.9 11.9 10.2 6.1 7.00 11.89 16.53 12.65 11.91 1947 4.5 -0.3 5.9 10.8 15.9 17.7 18.5 22.6 17.4 13.8 9.6 7.1 3.57 10.86 19.62 13.58 12.03 1948 7.3 6.5 12.3 11.9 15.4 15.6 17.9 17.1 15.9 12.7 10.2 7.9 6.97 13.22 16.87 12.93 12.59 1949 7.7 8.2 8.6 12.2 14.6 18.9 20.9 19.6 19.0 14.4 9.1 8.0 7.94 11.80 19.81 14.18 13.47 1950 6.6 7.7 10.5 10.3 14.9 18.8 18.1 17.5 14.9 12.1 8.1 3.5 7.44 11.93 18.15 11.70 11.95 1951 5.9 5.9 6.4 9.7 12.9 17.1 19.1 16.9 16.2 12.8 10.2 8.1 5.08 9.64 17.71 13.08 11.80 1952 5.3 6.2 9.0 12.5 16.2 16.6 19.0 18.2 13.7 11.5 6.6 6.0 6.56 12.55 17.93 10.59 11.75 1953 5.8 6.4 9.9 10.5 15.9 17.2 17.7 18.6 16.3 12.8 10.5 9.3 6.04 12.12 17.82 13.19 12.60 1954 5.3 5.4 8.4 11.3 14.1 15.6 15.7 16.5 15.3 13.7 9.5 8.4 6.66 11.25 15.94 12.85 11.63 1955 5.1 3.6 6.3 12.1 12.4 16.2 21.6 21.8 17.1 12.4 9.4 8.4 5.75 10.28 19.91 12.95 12.26 1956 6.4 2.9 9.6 10.7 15.0 16.0 18.1 15.9 16.4 12.3 8.5 7.9 5.97 11.78 16.67 12.40 11.68 1957 7.6 7.7 11.8 12.1 14.3 19.4 18.4 18.0 14.7 13.5 8.4 7.3 7.75 12.74 18.59 12.21 12.80 1958 6.5 7.6 6.6 10.5 13.7 16.5 18.1 17.6 17.3 12.9 9.2 7.0 7.09 10.29 17.42 13.11 11.98 1959 5.1 7.6 9.5 11.8 16.7 18.0 19.8 20.0 19.3 15.6 9.6 8.0 6.51 12.68 19.30 14.84 13.45 1960 6.6 6.2 8.8 11.8 16.4 19.4 17.4 17.5 15.5 12.3 9.3 6.2 6.95 12.34 18.08 12.39 12.30 1961 6.1 8.9 10.7 12.3 14.2 17.0 17.5 17.8 17.7 13.1 8.6 5.0 6.97 12.36 17.43 13.14 12.40 1962 6.9 6.5 5.9 10.5 12.6 16.6 17.5 16.4 14.9 13.3 7.9 5.3 6.12 9.68 16.81 12.05 11.22 1963 0.2 1.9 8.5 10.7 13.0 17.7 17.8 16.5 15.7 13.2 10.2 5.2 2.49 10.70 17.34 13.05 10.93 1964 5.8 6.4 6.7 10.9 15.7 15.9 18.0 18.2 17.3 11.9 9.9 6.4 5.78 11.09 17.39 13.03 11.94 1965 5.7 5.2 8.4 11.0 14.1 16.8 16.5 17.7 14.5 13.8 7.0 7.5 5.77 11.15 17.05 11.78 11.56 1966 4.8 7.3 8.9 9.4 14.0 17.5 17.4 17.7 16.7 12.5 7.7 8.2 6.53 10.78 17.54 12.30 11.87 1967 6.6 7.4 8.7 10.5 12.6 17.4 18.8 18.0 15.8 12.5 8.1 6.8 7.40 10.61 18.08 12.15 11.97 1968 6.9 4.3 8.6 10.9 12.7 17.6 18.1 18.6 16.0 14.2 8.5 5.6 6.03 10.70 18.09 12.92 11.84 1969 7.3 3.2 6.0 10.9 13.6 17.4 19.0 18.4 16.2 15.3 7.9 6.0 5.42 10.15 18.27 13.20 11.83 1970 6.4 5.5 6.3 9.0 15.6 19.6 17.0 18.6 16.7 13.0 10.1 6.5 5.99 10.32 18.40 13.26 12.07 1971 6.8 6.9 7.5 10.8 15.0 15.1 20.4 17.9 18.1 14.4 9.2 8.3 6.74 11.09 17.84 13.94 12.58 1972 5.9 6.3 9.4 10.6 12.5 13.6 18.3 17.7 15.1 13.2 9.0 8.3 6.86 10.81 16.55 12.43 11.67 1973 6.5 6.6 9.3 10.0 14.1 17.8 18.1 19.5 16.8 12.1 9.2 7.7 7.15 11.12 18.48 12.69 12.34 1974 8.2 7.6 8.2 12.2 13.6 16.6 16.8 17.6 13.9 10.1 8.7 9.4 7.82 11.30 16.98 10.89 11.92 1975 8.6 7.2 7.0 10.7 13.7 18.7 20.0 21.1 15.7 12.9 9.1 7.4 8.45 10.48 19.95 12.60 12.72 1976 7.4 6.2 7.3 11.1 14.2 19.6 21.3 22.1 15.6 12.3 8.8 4.5 7.02 10.87 21.00 12.20 12.55 1977 4.9 7.2 9.1 9.4 14.3 15.4 19.0 18.3 15.1 14.0 8.3 7.9 5.48 10.95 17.60 12.49 11.95 1978 5.7 4.7 8.7 9.2 15.3 16.1 16.9 17.1 16.1 14.3 10.7 6.5 6.12 11.10 16.70 13.71 11.82 1979 3.3 3.2 6.5 10.1 11.9 16.5 18.6 17.2 15.8 13.7 9.6 8.0 4.38 9.49 17.41 13.03 11.24 1980 4.8 8.0 6.9 12.0 15.5 15.9 17.1 17.9 16.6 11.4 8.3 8.1 6.91 11.45 17.01 12.08 11.89 1981 7.2 5.4 9.6 11.0 13.6 15.4 17.6 19.3 17.1 10.7 10.0 3.8 6.97 11.40 17.44 12.57 11.76 1982 5.4 7.3 8.7 11.9 14.9 18.2 19.3 17.7 16.9 12.5 9.7 7.1 5.44 11.83 18.43 13.05 12.50 1983 8.5 4.2 8.4 9.5 12.6 16.9 23.1 20.9 15.7 12.7 9.6 8.5 6.68 10.18 20.35 12.66 12.62 1984 6.3 6.1 6.9 12.5 13.9 17.6 20.8 21.0 15.7 13.3 9.4 7.9 6.99 11.08 19.82 12.83 12.64 1985 3.7 5.0 7.4 10.8 13.8 15.4 18.4 16.3 17.1 13.0 6.9 8.4 5.53 10.66 16.71 12.34 11.38 1986 5.8 1.2 7.6 8.2 13.1 17.9 17.6 15.7 14.7 13.3 10.2 8.7 5.26 9.65 17.06 12.75 11.23 1987 3.4 6.3 6.6 13.2 13.4 15.0 18.5 18.2 16.2 12.1 8.7 7.4 6.10 11.06 17.27 12.32 11.61 1988 7.5 7.1 8.4 11.3 15.2 18.0 16.2 17.3 15.3 12.8 9.0 9.4 7.35 11.65 17.16 12.37 12.31 1989 8.5 8.4 9.8 9.5 16.9 18.1 21.7 19.3 17.0 13.9 9.2 7.0 8.79 12.07 19.69 13.36 13.30 1990 8.8 9.5 10.5 11.6 16.9 16.0 20.7 20.5 15.9 13.8 8.9 6.7 8.36 13.05 19.09 12.89 13.36 1991 5.4 4.6 10.0 10.7 14.2 14.6 19.5 19.7 18.2 12.2 9.0 7.3 5.62 11.67 17.94 13.10 12.16 1992 6.0 8.0 9.4 11.1 17.1 19.3 18.7 17.3 15.4 10.1 10.0 6.3 7.06 12.58 18.41 11.81 12.40 1993 8.4 6.9 8.9 12.1 14.4 17.9 17.3 17.3 15.2 10.6 7.4 7.8 7.20 11.79 17.50 11.08 12.04 1994 7.5 5.5 9.3 10.6 13.6 16.5 20.2 18.0 14.8 13.1 11.8 9.1 6.95 11.18 18.28 13.22 12.55 1995 7.5 8.5 8.2 12.0 14.8 17.9 21.4 23.4 16.4 15.4 10.3 4.8 8.39 11.68 20.92 14.03 13.41 1996 5.9 5.3 7.0 11.3 12.3 17.6 19.3 19.1 16.9 13.7 8.6 5.3 5.33 10.20 18.67 13.08 11.88 1997 5.0 8.7 10.6 12.6 15.4 16.4 19.6 21.2 16.6 13.3 10.8 8.3 6.23 12.87 19.10 13.58 13.24 1998 7.3 9.8 10.3 10.2 16.6 16.3 17.3 18.6 17.0 12.9 9.0 8.5 8.40 12.38 17.41 12.98 12.83 1999 8.1 7.5 9.4 12.0 15.5 16.6 20.8 19.0 18.1 13.3 10.0 7.6 8.03 12.32 18.82 13.82 13.20 2000 7.2 8.5 9.8 10.6 15.5 17.6 18.7 19.2 17.2 12.6 9.0 7.6 7.77 12.02 18.49 12.95 12.82 2001 5.8 7.3 7.6 10.3 16.2 17.3 19.3 18.9 15.9 15.1 10.4 6.8 6.85 11.40 18.54 13.82 12.61 2002 8.3 9.0 10.3 12.3 14.5 16.2 18.0 19.1 17.5 12.8 10.9 7.2 7.98 12.35 17.81 13.72 13.03 2003 6.6 6.8 11.4 13.8 14.3 18.7 19.7 21.1 17.8 12.0 10.6 7.8 6.88 13.15 19.85 13.45 13.41 2004 7.6 7.5 9.2 12.0 15.7 18.2 18.0 19.9 17.2 12.7 10.1 8.5 7.63 12.29 18.68 13.30 13.05 2005 8.4 6.6 9.7 12.0 14.6 18.4 19.5 19.3 18.0 14.7 9.4 7.6 7.87 12.09 19.09 14.01 13.21 2006 6.5 5.9 7.4 11.6 15.0 19.5 23.0 18.5 19.0 14.9 10.9 8.5 6.70 11.31 20.33 14.94 13.43 2007 9.0 8.4 10.1 15.7 15.1 18.1 17.3 18.5 16.6 13.9 10.4 7.9 8.64 13.61 17.95 13.63 13.43 2008 8.8 9.2 8.7 11.0 17.2 16.9 18.8 17.8 16.1 12.3 9.4 6.5 8.63 12.32 17.86 12.60 12.75 2009 5.9 6.6 9.8 13.0 14.8 18.7 18.2 18.6 16.7 14.4 10.5 5.8 6.30 12.54 18.51 13.86 12.77 2010 4.0 5.6 9.0 13.0 14.7 19.3 18.8 17.9 16.6 13.4 7.8 3.0 5.10 12.20 18.62 12.61 11.93 2011 5.9 8.6 10.3 15.8 14.9 16.9 18.5 17.8 17.2 14.8 12.0 8.6 5.74 13.65 17.73 14.65 13.45 2012 8.0 7.0 12.0 10.2 15.3 16.0 17.7 18.9 15.6 12.1 9.1 7.7 7.88 12.55 17.55 12.28 12.50 2013 6.0 5.7 5.5 10.3 13.4 17.1 22.4 19.3 16.8 14.5 9.2 9.2 6.49 9.73 19.64 13.51 12.50 2014 7.9 7.9 10.7 13.2 15.1 18.8 20.8 17.6 18.7 14.5 10.7 8.1 8.33 12.99 19.10 14.65 13.70 2015 7.1 6.5 9.0 13.4 13.4 17.4 18.0 18.2 16.1 13.9 11.9 11.5 7.27 11.91 17.87 13.94 13.06 2016 8.1 7.5 8.9 10.9 16.3 18.2 18.7 19.3 18.0 13.5 8.6 9.1 9.05 12.02 18.76 13.39 13.12 2017 7.2 8.1 10.9 12.3 16.9 18.3 19.3 18.1 16.0 14.3 9.8 7.6 8.13 13.36 18.60 13.41 13.28 2018 7.5 5.6 7.2 12.2 16.9 20.5 22.6 18.9 16.1 13.3 10.2 9.1 6.98 12.10 20.66 13.20 13.39 2019 6.7 10.4 10.1 13.1 14.8 8.66 12.66