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[PP07] Extreme temperatures
State

Key message
Bad

Temperature observations show increasing trend of maximum and minimum absolute temperature in between 1961 and 2018, reflecting a global warming. Number of hot days is increasing, including the frequency of extreme hot days with daily maximum temperature above 35 °C. Number of days with temperature below zero show a decline.

Charts

Figure PP07-1: Absolute maximum and minimum temperature in Slovenia, 1961-2018
Sources:

ARSO Meteorological Data Archive, Slovenian Environment Agency, 2019

Show data
max. Kredarica[°C] max. Rateče[°C] max Murska Sobota[°C] max. Novo mesto[°C] max Ljubljana[°C] max Portorož[°C] min Kredarica[°C] min Rateče[°C] min Murska Sobota[°C] min Novo mesto[°C] min Ljubljana[°C] min Portorož[°C]
1961 15.40 29 33.60 33.80 33.90 -24.10 -21.20 -22.40 -20.40 -15.20
1962 17.40 29.80 32.60 33.90 33.50 -25.80 -19 -16.70 -17 -13.80
1963 14 28.60 33.90 35.40 33.80 -28 -23.20 -31 -23.60 -20.20
1964 16.70 28.40 31.20 32.30 32.20 -21 -19.70 -21.20 -17.10 -15.30
1965 16.30 30.40 32 34 34.70 -22.80 -19.80 -18.40 -16.90 -11.50
1966 16.70 29.40 30.60 30.40 31.30 -21.30 -20.20 -22.10 -17.80 -15.30
1967 16.60 30.60 33.30 34.20 33.50 -21.70 -20.40 -23.80 -22.30 -13.70
1968 16.80 30.40 37.20 36.20 35.30 -26.70 -24.80 -25.50 -23.40 -19.70
1969 15.60 30.50 33.20 31.80 33.60 -22.60 -23 -27.60 -21.60 -16.30
1970 17 29.30 31.80 32.60 33.20 -22.60 -22 -18.80 -18.40 -13.70
1971 18.10 32.10 34.40 36.40 36.50 -28.10 -22 -18.60 -14.50 -14.70
1972 17.40 29.20 32.40 32.50 33.20 -19.10 -15.20 -14 -10.90 -10
1973 16.10 28.40 30.40 31.70 31.40 -24 -18.80 -17.50 -15.60 -16
1974 16.60 30.70 32.40 32.90 33.10 -17.70 -12.20 -7.70 -7.50 -6.70
1975 18.40 28 29.80 31.20 32 -20.60 -17.60 -11.20 -10.80 -9.90
1976 15 30 32.30 32.60 34 -22.20 -19.80 -22.40 -15.90 -14.60
1977 13.80 28.80 31.20 31.10 32 -19.10 -17.70 -20.70 -11.60 -8.40
1978 14.60 26.70 29.40 31 29.60 -19.90 -21.20 -23.60 -16.70 -12.20
1979 14 27.40 30.50 32.60 31.80 -27.80 -22.70 -20 -17 -14.50
1980 17.80 28.50 30.80 31.60 32.80 -22.20 -20.10 -22.20 -17.30 -15.20
1981 18 29 32.10 31.70 33.70 -25.10 -21.80 -21.60 -16.10 -14.40
1982 16.60 28.80 31.80 31.70 32.80 -23.40 -19.30 -19 -12.20 -10.60
1983 21.60 36.10 35.60 34.70 37.10 -22.70 -20.20 -17.40 -15.20 -14.10
1984 18.20 31.80 31.20 33.50 33.30 -21.10 -20.40 -19.60 -13.70 -12.90
1985 16 29.30 31.80 32.10 33.10 -28.30 -26.40 -26.40 -23.50 -20.30
1986 14.30 29.70 32.70 32.50 32.70 -22.60 -22 -22.70 -17.10 -13.30
1987 17 27.80 33.10 31.70 33.20 -24.20 -24.30 -26.90 -19.40 -18.30
1988 15.80 29.80 34.80 34.30 34.90 -21.40 -19.20 -16.60 -15.10 -14.50
1989 15.10 29.10 30.90 30.40 32 33 -17.60 -14.20 -13.10 -11.60 -11.40 -6.90
1990 15.90 28.40 32.40 33 33.40 34.90 -19.60 -14.40 -14.10 -13.40 -11.10 -5
1991 16.60 30.50 33.20 33.20 34.20 33.60 -25.30 -20.40 -17.10 -15.80 -14.60 -10.30
1992 17.80 33.20 37.20 36.20 36.50 34.70 -22.70 -15.60 -11.50 -12.30 -11.30 -6.20
1993 15.40 30.40 35.20 35.60 34.90 34.10 -25.20 -18.20 -17.30 -18.60 -12.60 -6.80
1994 16.10 31.60 34.10 34.70 34.70 35.70 -22.60 -17.60 -17.50 -14 -10.60 -8.20
1995 17.80 30.10 31.40 31.40 33.50 34.40 -20.80 -15.50 -19.40 -11.70 -9.20 -6.40
1996 14.30 29.20 32.20 32 33.30 34.40 -26.30 -20.80 -21.30 -17.10 -13 -8.50
1997 16.80 27.80 30.40 30 30.80 31.40 -17.80 -13.10 -13.40 -9.50 -9.10 -4.40
1998 17.80 32.40 33.50 33.80 34.10 36.30 -19.90 -16.70 -15.60 -14.40 -13.10 -6.30
1999 17.40 29.30 32.90 33.30 33.10 33 -24.80 -20.30 -16 -14 -11.90 -5.50
2000 18 31 37.90 36.70 35.60 35 -23.70 -20.40 -14.60 -15.70 -14 -9.50
2001 16.90 30.30 35.60 35.50 35.20 34.70 -24.20 -18.10 -22 -15.10 -14.50 -7.80
2002 16.70 31.70 34.10 34 34.90 34 -19.60 -17.50 -13.70 -12.40 -12.90 -7.50
2003 18.60 34.30 38.40 38.40 37.30 36.90 -20.90 -21 -21.60 -18.20 -16.20 -8.80
2004 15.60 31.40 33.40 33 34.30 34.90 -19.20 -20.10 -18.80 -15.20 -11.20 -8.60
2005 18.40 30.80 33.40 33.40 35 34.60 -25.80 -24.30 -24.10 -17.20 -14.10 -10.50
2006 17.30 32.60 33.30 34.40 35.90 35.90 -19.10 -20.40 -22.60 -16.10 -15.70 -8.60
2007 18.20 32.30 39.10 36.60 37 36.70 -18.40 -14 -8.20 -9.40 -6.90 -3.60
2008 16.40 30.50 33.20 32.70 32.70 33.50 -18.90 -16.70 -11 -9.60 -7.70 -6.70
2009 17 30.40 33.70 33.70 32.90 33.80 -23.10 -21.20 -21.10 -15.90 -13.10 -9.90
2010 16.20 31.80 33.50 35.60 35.90 35.50 -22.50 -20.70 -20.30 -14.90 -11.90 -7.40
2011 19.60 32.80 35 36.70 36 35.10 -19.20 -16.30 -10.40 -10.30 -7.60 -5.70
2012 18.80 33 37.20 37.80 37.10 36.80 -25 -17.40 -20.40 -16.60 -12.20 -8.10
2013 19.10 35.80 40.10 39.90 40.20 37.30 -19.90 -16.80 -15.50 -10 -7.20 -3.80
2014 15.50 31 34.40 33.60 35 33.60 -20.40 -14.20 -15.60 -14.10 -11 -2
2015 18.10 32.40 35.70 35 36.50 37.40 -19.30 -13.60 -11.70 -14.80 -9.60 -3.50
2016 17.30 30.30 33.40 34 33.70 34.50 -19.50 -13.20 -11.50 -10.30 -8.20 -4.60
2017 19.30 32.50 37.80 36.70 38.10 37.30 -24 -19 -16.30 -16.90 -13.30 -8.70
2018 17.40 31.80 34 33.40 34.60 35.40 -27.20 -21.10 -19.10 -17.20 -12.70 -5.90
Figure PP07-2: Number of hot days (with max temperature above 30 °C) in Slovenia, 1961-2018
Sources:

ARSO Meteorological Data Archive, Slovenian Environment Agency, 2019

Show data
Kredarica[number of days] Rateče[number of days] Murska Sobota[number of days] Novo mesto[number of days] Ljubljana[number of days] Portorož[number of days]
1961 0 0 9 9 11
1962 0 0 8 16 16
1963 0 0 14 15 14
1964 0 0 2 3 7
1965 0 1 3 9 10
1966 0 0 2 3 4
1967 0 1 10 14 18
1968 0 1 7 8 8
1969 0 1 5 7 6
1970 0 0 3 6 12
1971 0 1 11 11 18
1972 0 0 5 8 7
1973 0 0 2 4 8
1974 0 2 12 8 15
1975 0 0 0 2 3
1976 0 0 6 7 7
1977 0 0 1 1 4
1978 0 0 0 1 0
1979 0 0 3 7 5
1980 0 0 4 4 7
1981 0 0 4 6 7
1982 0 0 4 3 10
1983 0 8 13 10 18
1984 0 3 2 6 4
1985 0 0 9 7 17
1986 0 0 7 9 12
1987 0 0 11 7 10 16
1988 0 0 18 16 24 34
1989 0 0 4 3 7 9
1990 0 0 10 9 9 13
1991 0 1 11 7 15 26
1992 0 13 36 22 26 25
1993 0 1 27 24 21 23
1994 0 6 29 25 31 52
1995 0 1 6 5 14 21
1996 0 0 5 6 7 7
1997 0 0 1 0 3 9
1998 0 5 16 23 32 36
1999 0 0 10 13 13 23
2000 0 2 32 30 27 24
2001 0 2 30 28 29 36
2002 0 3 20 12 14 17
2003 0 14 55 56 54 68
2004 0 2 13 14 14 21
2005 0 3 14 15 16 23
2006 0 12 25 25 28 39
2007 0 7 28 23 24 34
2008 0 1 18 14 17 40
2009 0 1 14 20 23 38
2010 0 7 22 22 20 21
2011 0 7 23 29 28 28
2012 0 8 41 37 39 57
2013 0 16 29 29 35 43
2014 0 1 14 12 14 12
2015 0 12 40 42 43 51
2016 0 1 17 16 19 52
2017 0 6 34 45 42 44
2018 0 7 28 25 33 48
Figure PP07-3: Number of icing days (with max temperature below 0 °C) in Slovenia, 1961-2018
Sources:

ARSO Meteorological Data Archive, Slovenian Environment Agency, 2019

Show data
Kredarica[number of days] Rateče[number of days] Murska Sobota[number of days] Novo mesto[number of days] Ljubljana[number of days] Portorož[number of days]
1961 131 31 25 18 22
1962 187 43 33 31 31
1963 148 56 60 54 49
1964 171 41 35 32 31
1965 174 39 18 14 17
1966 156 33 23 18 23
1967 142 35 19 20 20
1968 165 43 38 29 28
1969 166 57 42 38 35
1970 174 40 28 25 22
1971 162 36 36 26 29
1972 172 45 32 30 22
1973 162 27 15 13 14
1974 196 6 1 3 1
1975 165 15 5 6 11
1976 171 35 25 22 17
1977 141 28 16 13 9
1978 164 40 30 26 20
1979 163 31 18 14 12
1980 167 48 31 24 21
1981 148 34 17 16 17
1982 151 26 28 26 21
1983 130 25 24 18 11
1984 166 36 19 20 16
1985 164 43 40 32 31
1986 149 45 45 37 36
1987 160 41 39 28 23
1988 149 13 10 6 13
1989 126 13 14 7 6 0
1990 127 26 20 16 16 0
1991 165 45 24 20 25 1
1992 131 21 12 15 15 0
1993 128 28 28 24 21 1
1994 137 17 16 13 5 1
1995 148 28 23 16 7 0
1996 159 37 46 46 37 3
1997 143 22 22 15 12 0
1998 147 28 23 19 17 0
1999 126 26 27 20 20 0
2000 124 18 19 12 12 0
2001 151 33 20 15 17 0
2002 121 21 21 18 14 0
2003 144 22 23 22 14 0
2004 142 29 19 14 14 0
2005 142 50 22 19 11 0
2006 132 28 27 14 15 0
2007 127 7 15 18 11 0
2008 151 16 10 9 8 0
2009 155 31 20 23 21 1
2010 169 54 26 26 25 0
2011 123 21 21 19 13 0
2012 130 31 20 19 20 6
2013 148 23 14 11 10 0
2014 117 14 12 9 6 0
2015 111 11 7 5 2 0
2016 149 8 17 13 11 0
2017 132 28 24 19 18 0
2018 114 26 12 11 7 2
Figure PP07-4: Projected change in number of hot days (with max temperature above 30 °C) in Slovenia and associated reliability of change (2011-2040)
Sources:

Ocena podnebnih sprememb v Sloveniji do konca 21. stoletja, 2018

Figure PP07-5: Projected change in number of frost and icing days in Slovenia and associated reliability of change (2011-2040)
Sources:

Ocena podnebnih sprememb v Sloveniji do konca 21. stoletja, 2018

Goals

  • to monitor and analyse the data on extreme weather events;
  • to mitigate the adverse effects and sensitivity caused by extreme weather events;
  • to incorporate adjustment mechanisms into development plans.

Methodology

Date of data source summarization

Related indicators

Last modified
27.08.2019
Author(s)

Tanja Cegnar, Slovenian Environment Agency; Živa Vlahović, Slovenian Environment Agency