Indicator Climate

Evolution of annual mean temperature

The combustion of coal, gas and oil, together with forest logging and large-scale livestock farming, are the main causes of the rise in greenhouse gas concentrations in the atmosphere that has been observed for several decades and the associated warming. Higher temperatures, even if only by a few degrees Celsius, have wide-ranging impacts upon natural systems and human societies.

Assessment of the state
impossible to evaluate impossible to evaluate
Assessment of the trend
negative negative
20-years weighted mean 2015: 2.3429506 20-years weighted mean 2014: 2.2478496 20-years weighted mean 2013: 2.1498206 20-years weighted mean 2012: 2.0644836 20-years weighted mean 2011: 1.9871496 20-years weighted mean 2010: 1.9276076 20-years weighted mean 2009: 1.8808496 20-years weighted mean 2008: 1.8550336 20-years weighted mean 2007: 1.8395176 20-years weighted mean 2006: 1.8317516 20-years weighted mean 2005: 1.8335866 20-years weighted mean 2004: 1.8349086 20-years weighted mean 2003: 1.8291266 20-years weighted mean 2002: 1.8180276 20-years weighted mean 2001: 1.7996806 20-years weighted mean 2000: 1.7676856 20-years weighted mean 1999: 1.7273416 20-years weighted mean 1998: 1.6882236 20-years weighted mean 1997: 1.6575846 20-years weighted mean 1996: 1.6382336 20-years weighted mean 1995: 1.6219406 20-years weighted mean 1994: 1.6063786 20-years weighted mean 1993: 1.5878856 20-years weighted mean 1992: 1.5576576 20-years weighted mean 1991: 1.5116146 20-years weighted mean 1990: 1.4477886 20-years weighted mean 1989: 1.3612046 20-years weighted mean 1988: 1.2555676 20-years weighted mean 1987: 1.1504036 20-years weighted mean 1986: 1.0440016 20-years weighted mean 1985: 0.9475206 20-years weighted mean 1984: 0.870901600000001 20-years weighted mean 1983: 0.805716600000001 20-years weighted mean 1982: 0.753428600000001 20-years weighted mean 1981: 0.705833600000001 20-years weighted mean 1980: 0.667370600000001 20-years weighted mean 1979: 0.6428106 20-years weighted mean 1978: 0.6268736 20-years weighted mean 1977: 0.615305600000001 20-years weighted mean 1976: 0.6054966 20-years weighted mean 1975: 0.594397600000001 20-years weighted mean 1974: 0.574622600000001 20-years weighted mean 1973: 0.5484896 20-years weighted mean 1972: 0.529626600000001 20-years weighted mean 1971: 0.509318600000001 20-years weighted mean 1970: 0.488390600000001 20-years weighted mean 1969: 0.4819216 20-years weighted mean 1968: 0.4748626 20-years weighted mean 1967: 0.4784096 20-years weighted mean 1966: 0.4859446 20-years weighted mean 1965: 0.5043956 20-years weighted mean 1964: 0.5244116 20-years weighted mean 1963: 0.5546176 20-years weighted mean 1962: 0.5845566 20-years weighted mean 1961: 0.615023600000001 20-years weighted mean 1960: 0.628886600000001 20-years weighted mean 1959: 0.623836600000001 20-years weighted mean 1958: 0.603708600000001 20-years weighted mean 1957: 0.5815396 20-years weighted mean 1956: 0.572803600000001 20-years weighted mean 1955: 0.585267600000001 20-years weighted mean 1954: 0.631881600000001 20-years weighted mean 1953: 0.708686600000001 20-years weighted mean 1952: 0.795071600000001 20-years weighted mean 1951: 0.898697600000001 20-years weighted mean 1950: 0.984123600000001 20-years weighted mean 1949: 1.0411056 20-years weighted mean 1948: 1.0552346 20-years weighted mean 1947: 1.0311826 20-years weighted mean 1946: 0.960555600000001 20-years weighted mean 1945: 0.8599526 20-years weighted mean 1944: 0.738297600000001 20-years weighted mean 1943: 0.615203600000001 20-years weighted mean 1942: 0.5097296 20-years weighted mean 1941: 0.4245526 20-years weighted mean 1940: 0.3726556 20-years weighted mean 1939: 0.350371600000001 20-years weighted mean 1938: 0.3568996 20-years weighted mean 1937: 0.3777636 20-years weighted mean 1936: 0.4035706 20-years weighted mean 1935: 0.4279646 20-years weighted mean 1934: 0.4432616 20-years weighted mean 1933: 0.4574796 20-years weighted mean 1932: 0.4727566 20-years weighted mean 1931: 0.4904086 20-years weighted mean 1930: 0.5025446 20-years weighted mean 1929: 0.5187566 20-years weighted mean 1928: 0.5315066 20-years weighted mean 1927: 0.5305216 20-years weighted mean 1926: 0.5259016 20-years weighted mean 1925: 0.5058626 20-years weighted mean 1924: 0.4900956 20-years weighted mean 1923: 0.4652796 20-years weighted mean 1922: 0.4363596 20-years weighted mean 1921: 0.3954986 20-years weighted mean 1920: 0.3465456 20-years weighted mean 1919: 0.2934996 20-years weighted mean 1918: 0.2389636 20-years weighted mean 1917: 0.1881596 20-years weighted mean 1916: 0.1532146 20-years weighted mean 1915: 0.1304126 20-years weighted mean 1914: 0.1146106 20-years weighted mean 1913: 0.1014406 20-years weighted mean 1912: 0.0840356000000003 20-years weighted mean 1911: 0.0626206000000004 20-years weighted mean 1910: 0.0446676000000004 20-years weighted mean 1909: 0.0204906000000004 20-years weighted mean 1908: 0.0120936000000004 20-years weighted mean 1907: 0.0127306000000004 20-years weighted mean 1906: 0.0302316000000004 20-years weighted mean 1905: 0.0594176000000005 20-years weighted mean 1904: 0.0917856000000005 20-years weighted mean 1903: 0.1326306 20-years weighted mean 1902: 0.1721146 20-years weighted mean 1901: 0.215104600000001 20-years weighted mean 1900: 0.2478846 20-years weighted mean 1899: 0.2579166 20-years weighted mean 1898: 0.2451106 20-years weighted mean 1897: 0.2078136 20-years weighted mean 1896: 0.1502766 20-years weighted mean 1895: 0.0692686000000004 20-years weighted mean 1894: -0.0164813999999996 20-years weighted mean 1893: -0.1069854 20-years weighted mean 1892: -0.1925844 20-years weighted mean 1891: -0.2735704 20-years weighted mean 1890: -0.3287694 20-years weighted mean 1889: -0.3525804 20-years weighted mean 1888: -0.3370954 20-years weighted mean 1887: -0.2951014 20-years weighted mean 1886: -0.2357664 20-years weighted mean 1885: -0.1701014 20-years weighted mean 1884: -0.1099434 20-years weighted mean 1883: -0.0642953999999996 20-years weighted mean 1882: -0.0352363999999995 20-years weighted mean 1881: -0.0189323999999996 20-years weighted mean 1880: -0.00721539999999954 20-years weighted mean 1879: -0.00277439999999954 20-years weighted mean 1878: 0.00698060000000048 20-years weighted mean 1877: 0.0209646000000004 20-years weighted mean 1876: 0.0441186000000005 20-years weighted mean 1875: 0.0655066000000005 20-years weighted mean 1874: 0.0891536000000005 20-years weighted mean 1873: 0.1068526 Years above the average of 1961–1990 2023: 3.36733333333333 Years above the average of 1961–1990 2022: 3.54733333333333 Years above the average of 1961–1990 2021: 1.76733333333333 Years above the average of 1961–1990 2020: 2.99733333333333 Years above the average of 1961–1990 2019: 2.62733333333333 Years above the average of 1961–1990 2018: 3.01733333333333 Years above the average of 1961–1990 2017: 2.32733333333333 Years above the average of 1961–1990 2016: 2.20733333333333 Years above the average of 1961–1990 2015: 2.80733333333333 Years above the average of 1961–1990 2014: 2.64733333333333 Years above the average of 1961–1990 2013: 1.40733333333333 Years above the average of 1961–1990 2012: 1.95733333333333 Years above the average of 1961–1990 2011: 2.75733333333333 Years above the average of 1961–1990 2010: 0.817333333333333 Years above the average of 1961–1990 2009: 1.93733333333333 Years above the average of 1961–1990 2008: 1.74733333333333 Years above the average of 1961–1990 2007: 2.19733333333333 Years above the average of 1961–1990 2006: 2.08733333333333 Years above the average of 1961–1990 2005: 1.12733333333333 Years above the average of 1961–1990 2004: 1.53733333333333 Years above the average of 1961–1990 2003: 2.37733333333333 Years above the average of 1961–1990 2002: 2.21733333333333 Years above the average of 1961–1990 2001: 1.59733333333333 Years above the average of 1961–1990 2000: 2.12733333333333 Years above the average of 1961–1990 1999: 1.50733333333333 Years above the average of 1961–1990 1998: 1.59733333333333 Years above the average of 1961–1990 1997: 1.98733333333333 Years above the average of 1961–1990 1996: 0.767333333333334 Years above the average of 1961–1990 1995: 1.33733333333333 Years above the average of 1961–1990 1994: 2.51733333333333 Years above the average of 1961–1990 1993: 1.31733333333333 Years above the average of 1961–1990 1992: 1.86733333333333 Years above the average of 1961–1990 1991: 1.11733333333333 Years above the average of 1961–1990 1990: 1.83733333333333 Years above the average of 1961–1990 1989: 1.98733333333333 Years above the average of 1961–1990 1988: 1.48733333333333 Years above the average of 1961–1990 1987: 0.827333333333334 Years above the average of 1961–1990 1986: 0.747333333333334 Years above the average of 1961–1990 1985: 0.497333333333334 Years above the average of 1961–1990 1984: 0.257333333333334 Years above the average of 1961–1990 1983: 1.47733333333333 Years above the average of 1961–1990 1982: 1.35733333333333 Years above the average of 1961–1990 1981: 0.617333333333334 Years below the average of 1961–1990 1980: -0.0126666666666662 Years above the average of 1961–1990 1979: 0.567333333333333 Years above the average of 1961–1990 1978: 0.287333333333334 Years above the average of 1961–1990 1977: 0.877333333333334 Years above the average of 1961–1990 1976: 0.757333333333334 Years above the average of 1961–1990 1975: 0.887333333333334 Years above the average of 1961–1990 1974: 0.627333333333334 Years above the average of 1961–1990 1973: 0.387333333333334 Years above the average of 1961–1990 1972: 0.377333333333334 Years above the average of 1961–1990 1971: 0.757333333333334 Years above the average of 1961–1990 1970: 0.207333333333334 Years above the average of 1961–1990 1969: 0.217333333333334 Years above the average of 1961–1990 1968: 0.477333333333334 Years above the average of 1961–1990 1967: 0.847333333333334 Years above the average of 1961–1990 1966: 0.777333333333333 Years below the average of 1961–1990 1965: -0.182666666666666 Years above the average of 1961–1990 1964: 1.06733333333333 Years below the average of 1961–1990 1963: -0.152666666666666 Years below the average of 1961–1990 1962: -0.162666666666666 Years above the average of 1961–1990 1961: 1.66733333333333 Years above the average of 1961–1990 1960: 0.557333333333334 Years above the average of 1961–1990 1959: 1.41733333333333 Years above the average of 1961–1990 1958: 0.797333333333334 Years above the average of 1961–1990 1957: 0.927333333333334 Years below the average of 1961–1990 1956: -0.762666666666666 Years above the average of 1961–1990 1955: 0.327333333333334 Years above the average of 1961–1990 1954: 0.167333333333334 Years above the average of 1961–1990 1953: 1.03733333333333 Years above the average of 1961–1990 1952: 0.557333333333334 Years above the average of 1961–1990 1951: 0.857333333333334 Years above the average of 1961–1990 1950: 1.16733333333333 Years above the average of 1961–1990 1949: 1.56733333333333 Years above the average of 1961–1990 1948: 1.41733333333333 Years above the average of 1961–1990 1947: 1.74733333333333 Years above the average of 1961–1990 1946: 0.877333333333334 Years above the average of 1961–1990 1945: 1.04733333333333 Years above the average of 1961–1990 1944: 0.0873333333333339 Years above the average of 1961–1990 1943: 1.39733333333333 Years above the average of 1961–1990 1942: 0.437333333333334 Years below the average of 1961–1990 1941: -0.312666666666666 Years below the average of 1961–1990 1940: -0.412666666666666 Years above the average of 1961–1990 1939: 0.167333333333334 Years above the average of 1961–1990 1938: 0.547333333333334 Years above the average of 1961–1990 1937: 0.707333333333334 Years above the average of 1961–1990 1936: 0.527333333333333 Years above the average of 1961–1990 1935: 0.157333333333333 Years above the average of 1961–1990 1934: 1.26733333333333 Years below the average of 1961–1990 1933: -0.0326666666666662 Years above the average of 1961–1990 1932: 0.407333333333333 Years below the average of 1961–1990 1931: -0.162666666666666 Years above the average of 1961–1990 1930: 1.04733333333333 Years above the average of 1961–1990 1929: 0.247333333333334 Years above the average of 1961–1990 1928: 0.987333333333333 Years above the average of 1961–1990 1927: 0.647333333333334 Years above the average of 1961–1990 1926: 0.877333333333334 Years above the average of 1961–1990 1925: 0.167333333333334 Years above the average of 1961–1990 1924: 0.197333333333333 Years above the average of 1961–1990 1923: 0.547333333333334 Years below the average of 1961–1990 1922: -0.172666666666666 Years above the average of 1961–1990 1921: 1.36733333333333 Years above the average of 1961–1990 1920: 1.19733333333333 Years below the average of 1961–1990 1919: -0.502666666666666 Years above the average of 1961–1990 1918: 0.467333333333334 Years below the average of 1961–1990 1917: -0.562666666666666 Years above the average of 1961–1990 1916: 0.267333333333334 Years below the average of 1961–1990 1915: -0.102666666666666 Years above the average of 1961–1990 1914: 0.0773333333333337 Years above the average of 1961–1990 1913: 0.447333333333333 Years below the average of 1961–1990 1912: -0.102666666666666 Years above the average of 1961–1990 1911: 0.977333333333334 Years below the average of 1961–1990 1910: -0.182666666666666 Years below the average of 1961–1990 1909: -0.662666666666666 Years below the average of 1961–1990 1908: -0.0926666666666662 Years above the average of 1961–1990 1907: 0.0473333333333339 Years above the average of 1961–1990 1906: 0.0273333333333339 Years below the average of 1961–1990 1905: -0.292666666666666 Years above the average of 1961–1990 1904: 0.717333333333334 Years above the average of 1961–1990 1903: 0.0373333333333337 Years below the average of 1961–1990 1902: -0.0326666666666662 Years below the average of 1961–1990 1901: -0.462666666666666 Years above the average of 1961–1990 1900: 0.637333333333334 Years above the average of 1961–1990 1899: 0.747333333333334 Years above the average of 1961–1990 1898: 0.877333333333334 Years above the average of 1961–1990 1897: 0.597333333333334 Years below the average of 1961–1990 1896: -0.552666666666666 Years below the average of 1961–1990 1895: -0.182666666666666 Years above the average of 1961–1990 1894: 0.157333333333333 Years above the average of 1961–1990 1893: 0.407333333333333 Years above the average of 1961–1990 1892: 0.0773333333333337 Years below the average of 1961–1990 1891: -0.622666666666666 Years below the average of 1961–1990 1890: -0.712666666666666 Years below the average of 1961–1990 1889: -0.842666666666666 Years below the average of 1961–1990 1888: -0.622666666666666 Years below the average of 1961–1990 1887: -0.902666666666666 Years above the average of 1961–1990 1886: 0.0973333333333337 Years above the average of 1961–1990 1885: 0.237333333333333 Years above the average of 1961–1990 1884: 0.337333333333334 Years below the average of 1961–1990 1883: -0.402666666666666 Years above the average of 1961–1990 1882: 0.207333333333334 Years above the average of 1961–1990 1881: 0.127333333333334 Years above the average of 1961–1990 1880: 0.637333333333334 Years below the average of 1961–1990 1879: -1.01266666666667 Years below the average of 1961–1990 1878: -0.332666666666666 Years above the average of 1961–1990 1877: 0.197333333333333 Years above the average of 1961–1990 1876: 0.367333333333334 Years below the average of 1961–1990 1875: -0.0126666666666662 Years below the average of 1961–1990 1874: -0.0726666666666662 Years above the average of 1961–1990 1873: 0.537333333333334 Years above the average of 1961–1990 1872: 0.807333333333334 Years below the average of 1961–1990 1871: -0.782666666666666 Years below the average of 1961–1990 1870: -0.502666666666666 Years above the average of 1961–1990 1869: 0.167333333333334 Years above the average of 1961–1990 1868: 0.937333333333334 Years above the average of 1961–1990 1867: 0.197333333333333 Years above the average of 1961–1990 1866: 0.717333333333334 Years above the average of 1961–1990 1865: 0.547333333333334 Years below the average of 1961–1990 1864: -0.702666666666666
Variations from the average of 1871–1900, in °C

Data for the graph: Excel
Source: MeteoSwiss
Annual mean temperature 2023: 7.23 Annual mean temperature 2022: 7.41 Annual mean temperature 2021: 5.63 Annual mean temperature 2020: 6.86 Annual mean temperature 2019: 6.49 Annual mean temperature 2018: 6.88 Annual mean temperature 2017: 6.19 Annual mean temperature 2016: 6.07 Annual mean temperature 2015: 6.67 Annual mean temperature 2014: 6.51 Annual mean temperature 2013: 5.27 Annual mean temperature 2012: 5.82 Annual mean temperature 2011: 6.62 Annual mean temperature 2010: 4.68 Annual mean temperature 2009: 5.8 Annual mean temperature 2008: 5.61 Annual mean temperature 2007: 6.06 Annual mean temperature 2006: 5.95 Annual mean temperature 2005: 4.99 Annual mean temperature 2004: 5.4 Annual mean temperature 2003: 6.24 Annual mean temperature 2002: 6.08 Annual mean temperature 2001: 5.46 Annual mean temperature 2000: 5.99 Annual mean temperature 1999: 5.37 Annual mean temperature 1998: 5.46 Annual mean temperature 1997: 5.85 Annual mean temperature 1996: 4.63 Annual mean temperature 1995: 5.2 Annual mean temperature 1994: 6.38 Annual mean temperature 1993: 5.18 Annual mean temperature 1992: 5.73 Annual mean temperature 1991: 4.98 Annual mean temperature 1990: 5.7 Annual mean temperature 1989: 5.85 Annual mean temperature 1988: 5.35 Annual mean temperature 1987: 4.69 Annual mean temperature 1986: 4.61 Annual mean temperature 1985: 4.36 Annual mean temperature 1984: 4.12 Annual mean temperature 1983: 5.34 Annual mean temperature 1982: 5.22 Annual mean temperature 1981: 4.48 Annual mean temperature 1980: 3.85 Annual mean temperature 1979: 4.43 Annual mean temperature 1978: 4.15 Annual mean temperature 1977: 4.74 Annual mean temperature 1976: 4.62 Annual mean temperature 1975: 4.75 Annual mean temperature 1974: 4.49 Annual mean temperature 1973: 4.25 Annual mean temperature 1972: 4.24 Annual mean temperature 1971: 4.62 Annual mean temperature 1970: 4.07 Annual mean temperature 1969: 4.08 Annual mean temperature 1968: 4.34 Annual mean temperature 1967: 4.71 Annual mean temperature 1966: 4.64 Annual mean temperature 1965: 3.68 Annual mean temperature 1964: 4.93 Annual mean temperature 1963: 3.71 Annual mean temperature 1962: 3.7 Annual mean temperature 1961: 5.53 Annual mean temperature 1960: 4.42 Annual mean temperature 1959: 5.28 Annual mean temperature 1958: 4.66 Annual mean temperature 1957: 4.79 Annual mean temperature 1956: 3.1 Annual mean temperature 1955: 4.19 Annual mean temperature 1954: 4.03 Annual mean temperature 1953: 4.9 Annual mean temperature 1952: 4.42 Annual mean temperature 1951: 4.72 Annual mean temperature 1950: 5.03 Annual mean temperature 1949: 5.43 Annual mean temperature 1948: 5.28 Annual mean temperature 1947: 5.61 Annual mean temperature 1946: 4.74 Annual mean temperature 1945: 4.91 Annual mean temperature 1944: 3.95 Annual mean temperature 1943: 5.26 Annual mean temperature 1942: 4.3 Annual mean temperature 1941: 3.55 Annual mean temperature 1940: 3.45 Annual mean temperature 1939: 4.03 Annual mean temperature 1938: 4.41 Annual mean temperature 1937: 4.57 Annual mean temperature 1936: 4.39 Annual mean temperature 1935: 4.02 Annual mean temperature 1934: 5.13 Annual mean temperature 1933: 3.83 Annual mean temperature 1932: 4.27 Annual mean temperature 1931: 3.7 Annual mean temperature 1930: 4.91 Annual mean temperature 1929: 4.11 Annual mean temperature 1928: 4.85 Annual mean temperature 1927: 4.51 Annual mean temperature 1926: 4.74 Annual mean temperature 1925: 4.03 Annual mean temperature 1924: 4.06 Annual mean temperature 1923: 4.41 Annual mean temperature 1922: 3.69 Annual mean temperature 1921: 5.23 Annual mean temperature 1920: 5.06 Annual mean temperature 1919: 3.36 Annual mean temperature 1918: 4.33 Annual mean temperature 1917: 3.3 Annual mean temperature 1916: 4.13 Annual mean temperature 1915: 3.76 Annual mean temperature 1914: 3.94 Annual mean temperature 1913: 4.31 Annual mean temperature 1912: 3.76 Annual mean temperature 1911: 4.84 Annual mean temperature 1910: 3.68 Annual mean temperature 1909: 3.2 Annual mean temperature 1908: 3.77 Annual mean temperature 1907: 3.91 Annual mean temperature 1906: 3.89 Annual mean temperature 1905: 3.57 Annual mean temperature 1904: 4.58 Annual mean temperature 1903: 3.9 Annual mean temperature 1902: 3.83 Annual mean temperature 1901: 3.4 Annual mean temperature 1900: 4.5 Annual mean temperature 1899: 4.61 Annual mean temperature 1898: 4.74 Annual mean temperature 1897: 4.46 Annual mean temperature 1896: 3.31 Annual mean temperature 1895: 3.68 Annual mean temperature 1894: 4.02 Annual mean temperature 1893: 4.27 Annual mean temperature 1892: 3.94 Annual mean temperature 1891: 3.24 Annual mean temperature 1890: 3.15 Annual mean temperature 1889: 3.02 Annual mean temperature 1888: 3.24 Annual mean temperature 1887: 2.96 Annual mean temperature 1886: 3.96 Annual mean temperature 1885: 4.1 Annual mean temperature 1884: 4.2 Annual mean temperature 1883: 3.46 Annual mean temperature 1882: 4.07 Annual mean temperature 1881: 3.99 Annual mean temperature 1880: 4.5 Annual mean temperature 1879: 2.85 Annual mean temperature 1878: 3.53 Annual mean temperature 1877: 4.06 Annual mean temperature 1876: 4.23 Annual mean temperature 1875: 3.85 Annual mean temperature 1874: 3.79 Annual mean temperature 1873: 4.4 Annual mean temperature 1872: 4.67 Annual mean temperature 1871: 3.08 Annual mean temperature 1870: 3.36 Annual mean temperature 1869: 4.03 Annual mean temperature 1868: 4.8 Annual mean temperature 1867: 4.06 Annual mean temperature 1866: 4.58 Annual mean temperature 1865: 4.41 Annual mean temperature 1864: 3.16
Annual mean temperature in °C

Data for the graph: Excel
Source: MeteoSwiss
Comment

The annual mean temperature in Switzerland is subject to relatively large natural fluctuations. Since around 1950, however, the observed fluctuations can no longer be explained by natural factors alone. The rising concentration of greenhouse gases in the atmosphere caused by humans has contributed substantially to the observed warming. Temperatures in Switzerland have increased by 2°C since measurements began. The year 2023 was the second warmest since measurements began in 1864. It thus continues the strong warming trend of recent years.

The variations of the annual mean temperature from the average of 1871-1900 cannot be rated positively or negatively as such. However, the trend observed over the past decades gives cause for concern. The changes to the climatic setting are happening relatively rapidly; as a result, ecosystems and endangered sectors of the economy (such as winter tourism) are unable or have difficulty to adjust to the new conditions.

International comparison

The Swiss temperature measurement series have been produced in accordance with internationally standardised methods. Globally, annual mean temperature variation since 1864 is about 1 °C, while it is around 2 °C in Switzerland. Global warming is more pronounced over the continents than over the oceans.

A global rise by 2 °C above the pre-industrialisation level is considered to be a critical threshold. If this threshold is crossed, severe ecological, social and economic damage is likely. In view of the longer-term development trends in greenhouse gas emissions and the great inertia of the climate system, it is becoming increasingly probable that global temperatures will indeed cross the 2 °C threshold.

Method

With its ground-level observation system (SwissMetNet), the Federal Office of Meteorology and Climatology (MeteoSwiss) records a range of meteorological and climatological parameters across the entire territory of the country. The annual mean temperature for Switzerland describes the average temperature measured across the entire territory and at the different altitudes in Switzerland. High-resolution data are available from 1981. In order to extend the time series back to 1864 (beginning of records), the various measurement stations for the specified years are weighted on the basis of their representativity.

 
Last updated on: 11.09.2024

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