Year,Value,ValueRank 1940,20.268,79 1941,19.604,86 1942,21.241,49 1943,20.63,69 1944,21.291,47 1945,19.896,83 1946,21.405,37 1947,20.123,82 1948,20.819,63 1949,20.174,81 1950,21.169,51 1951,20.634,68 1952,20.382,76 1953,20.74,64 1954,19.777,85 1955,22.1,18 1956,20.488,73 1957,20.532,71 1958,21.095,53 1959,21.03,54 1960,21.379,40 1961,22.004,21 1962,21.154,52 1963,21.336,43 1964,21.312,44 1965,20.386,75 1966,20.27,78 1967,21.64,30 1968,20.822,62 1969,20.689,67 1970,20.984,57 1971,20.988,56 1972,21.246,48 1973,21.546,32 1974,20.705,66 1975,21.348,41 1976,20.26,80 1977,20.917,58 1978,22.695,5 1979,21.343,42 1980,20.359,77 1981,21.009,55 1982,20.537,70 1983,20.472,74 1984,22.271,13 1985,21.45,35 1986,20.725,65 1987,21.441,36 1988,20.844,61 1989,20.881,59 1990,22.333,12 1991,21.619,31 1992,20.88,60 1993,19.809,84 1994,22.691,6 1995,21.404,38 1996,21.175,50 1997,21.395,39 1998,21.303,45 1999,22.017,19 2000,22.246,16 2001,21.764,26 2002,21.531,34 2003,20.53,72 2004,22.256,15 2005,22.005,20 2006,21.75,27 2007,21.698,28 2008,21.543,33 2009,21.292,46 2010,23.021,4 2011,22.264,14 2012,21.972,22 2013,22.507,9 2014,21.895,24 2015,21.649,29 2016,22.124,17 2017,21.942,23 2018,22.518,8 2019,21.858,25 2020,22.423,11 2021,22.45,10 2022,22.644,7 2023,23.645,2 2024,23.57,3 2025,23.912,1 Variable: Temperature Domain: Japan (Country) Month(s): Jun-Aug Average of all values: 21.373 Normal Period: 1940 to 2024 Normal Value = 21.343 Degrees C Trend Begin Value = 20.345 Degrees C Trend End Value = 22.4 Degrees C Total Trend (Change) = 2.056 Degrees C Total Trend (Change) per Decade = 0.239 Degrees C Trend Statistical Sig. (M-K Test): Increasing Trend P-value (M-K Test): 0.0