KAZALCI OKOLJA
  1. Home
  2. Podnebne spremembe
  3. Climate change adaptation
  4. Extreme temperatures

[PP07] Extreme temperatures
State

Key message
Bad

Temperature observations show increasing trend of maximum and minimum absolute temperature in between 1961 and 2022, reflecting a global warming. Number of hot days is increasing, including the frequency of extreme hot days with daily maximum temperature above 35 °C. In the summer of 2013, the highest temperature so far was measured in Slovenia, and local temperature records were observed at many meteorological stations. A record number of hot days was observed in 2022. Number of days with temperature below zero show a decline.

Charts

Figure PP07-1: Absolute maximum and minimum temperature in Slovenia, 1961-2022
Sources:

ARSO Meteorological Data Archive, Slovenian Environment Agency, 2023

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 15.10 29.10 33.60 33.50 33.80 32.70 -24 -21.20 -21.80 -19.60 -14.80 -7.10
1962 16.50 30 32.60 33.60 33.40 34.30 -25.70 -18.60 -16.10 -16.30 -13.10 -6.50
1963 13.10 28.80 34 35.10 33.70 32 -28 -22.80 -30.40 -22.70 -19.80 -10
1964 15.80 28.50 31.30 32.10 32.10 33.60 -21.40 -19 -20.60 -16.20 -14.90 -6.80
1965 15.40 30.60 32 33.80 34.60 32.70 -23.20 -19.50 -18 -16.10 -11.10 -6.60
1966 16 29.50 30.70 30.50 31.20 31.70 -21.30 -19.50 -21.50 -16.90 -14.90 -10
1967 15.70 30.80 33.40 34.30 33.40 33.10 -22.10 -19.70 -22.90 -21.50 -13.30 -8.10
1968 16.40 30.60 37.30 36.30 35.20 35 -26.70 -24.10 -24.60 -22.60 -19.30 -11.60
1969 15.20 30.70 33.30 31.90 33.50 33.30 -23 -22.70 -26.80 -20.80 -16 -7.20
1970 16.70 29.40 31.90 32.60 33.10 34.50 -23 -21.70 -17.90 -18.20 -13.40 -7.60
1971 17.80 32.20 34.60 36.40 36.40 35.40 -28.20 -22.10 -17.70 -14.30 -14.30 -7.20
1972 17 29.40 32.60 32.60 33.10 34.90 -19 -14.90 -13.70 -10.80 -9.60 -5.50
1973 15.80 28.50 30.60 31.70 31.30 34.30 -23.90 -18.90 -17.20 -15.50 -15.30 -8.90
1974 16.30 30.80 32.60 32.90 33 32.50 -17.60 -12 -7.30 -7.40 -6 -4.80
1975 18.30 28.20 29.90 31.30 31.90 31.30 -20.60 -17.30 -10.70 -10.70 -9.20 -6
1976 14.60 30.20 32.40 32.70 33.90 32.80 -22.30 -19.80 -22 -15.80 -14.40 -6.40
1977 13.10 29 31.20 31.20 31.90 30.90 -19.50 -17.70 -15.60 -11.50 -7.70 -5.60
1978 14.10 26.80 29.60 31 29.50 32.10 -19.90 -21 -23.30 -16.80 -11.90 -7.30
1979 13.30 27.50 30.50 32.60 31.70 32 -27.80 -22.70 -19.70 -17 -14.10 -11.50
1980 17.10 28.70 31 31.60 32.70 34.40 -22.10 -19.60 -21.60 -17.20 -14.50 -8.20
1981 17.30 29.20 32.30 31.80 33.60 33.30 -25.10 -21.30 -21 -16.10 -14 -9.50
1982 16.10 28.90 31.80 31.80 32.70 31.50 -23.40 -18.80 -18.40 -12.30 -10.20 -8.60
1983 20.90 36.30 35.70 34.70 37 34.80 -23.10 -20 -16.90 -15.30 -13.80 -6.10
1984 17.50 32 31.30 33.60 33.20 31.80 -21.50 -19.90 -19 -13.70 -12.50 -7.30
1985 15.30 29.50 31.60 32.20 33 34.50 -28.30 -25.90 -25.90 -23.50 -19.90 -13.70
1986 13.60 29.90 32.50 32.50 32.60 34.20 -23 -21.80 -22.70 -17.20 -13 -7.50
1987 16.50 27.90 32.90 31.80 33.10 33.60 -24.20 -23.80 -26.80 -19.40 -17.90 -8.50
1988 15.70 29.90 34.60 34.40 34.80 34.30 -21.30 -19.40 -16.80 -15 -14 -5.30
1989 14.90 29.30 30.70 30.50 31.90 33.10 -17.60 -14.20 -13.20 -11.50 -10.70 -6.70
1990 15.70 28.60 32.20 33 33.30 35 -19.50 -14.40 -14 -13.40 -10.70 -4.50
1991 16.40 30.70 33 33.30 34.10 33.60 -25.70 -20.40 -17.10 -15.90 -14.40 -9.80
1992 17.70 33.30 37 36.20 36.40 34.70 -22.70 -15.60 -11.60 -12.20 -11.10 -5.70
1993 15.20 30.50 35 35.60 34.80 34.20 -25.20 -18 -17.20 -18.70 -12.40 -6.30
1994 16 31.80 33.90 34.70 34.60 35.80 -23 -17.60 -17.50 -14.10 -10.40 -7.70
1995 17.60 30.30 31.20 31.50 33.40 34.40 -20.90 -15.30 -19.50 -11.70 -9 -5.90
1996 14 29.40 32 32.10 33.30 34.40 -26.20 -20.80 -21.30 -17.50 -13.10 -8.90
1997 16.30 27.90 30.20 30 30.90 31.40 -18.30 -13.10 -13.70 -9.90 -9 -4.10
1998 17.40 32.50 33.40 33.70 34.10 36.50 -20 -16.70 -16.10 -14.30 -13.10 -6.10
1999 17 29.50 32.80 33 32.90 32.70 -24.90 -20.30 -16 -14.20 -11.90 -5.10
2000 17.80 31.10 37.80 36.90 35.10 34.90 -23.60 -20.20 -14.60 -16 -14.10 -10
2001 16.60 30.70 35.20 35.70 35.30 34.50 -24 -18.10 -22 -15.30 -14.60 -8.10
2002 16.50 31.50 33.80 34.30 35 33.90 -19.90 -18.70 -13.70 -13.10 -11 -6.70
2003 18.20 33.80 38.40 38.50 37.60 36.30 -21.30 -21.10 -21.60 -18.50 -16.90 -8.70
2004 16 31 33.40 33.10 34.30 34.90 -19.40 -20.70 -18.30 -15.40 -11.40 -8.70
2005 18.30 30.90 33.30 33.60 35.20 34.50 -26.20 -23.50 -23.70 -17.60 -14.50 -10.40
2006 17.30 32.30 33.20 34.90 36.10 35.90 -18.90 -21.70 -22.40 -16.50 -16.10 -8.80
2007 18 31.70 39 37.10 37.40 36.70 -18.10 -14.30 -8.20 -9.50 -6.60 -3.60
2008 15.90 30.60 33.40 33.10 32.80 33.60 -18.30 -16.90 -10.70 -9.90 -7.40 -6.30
2009 16.80 30.10 33.70 34.20 33 33.80 -22.80 -21.50 -21 -16.10 -13.20 -9.90
2010 16.20 31.40 33.70 36 35.90 35.50 -22 -18.80 -20.30 -15.10 -11.80 -7.40
2011 19.60 32.80 35.20 36.60 36.30 35.10 -19.50 -16.90 -10.40 -10.60 -7.20 -5.70
2012 18.80 32.60 37.30 37.80 37.30 36.80 -25.10 -17.80 -20.70 -16.90 -12.10 -8.10
2013 19 35.80 39.70 39.90 40.20 37.30 -19.80 -16.80 -15.50 -10.20 -6.80 -3.80
2014 15.50 30.90 34.40 33.60 36.40 33.60 -19.90 -14.20 -15.60 -14.20 -11.30 -2
2015 18.10 32.40 35.60 36.50 36.50 37.40 -19.40 -13.90 -11.70 -15.10 -9.50 -3.50
2016 17.30 30.20 32.90 34 33.80 34.50 -19.50 -13.10 -11.50 -10.30 -8.20 -4.60
2017 19.30 32.50 37.80 36.70 38.10 37.30 -24 -18.80 -16.30 -16.90 -13.40 -8.70
2018 17.40 31.80 33.50 33.40 34.80 35.40 -27.20 -21.10 -19.10 -17.20 -12.70 -5.90
2019 20.80 35.50 35.20 36.30 36.80 35.60 -18.40 -14.90 -11.20 -11.20 -8.30 -4.40
2020 18 31.80 32.90 34.20 33.40 34.80 -20.20 -12.70 -8.30 -7.50 -5.90 -2.20
2021 17.20 31 34.50 35.40 35.80 35.10 -24.10 -17.80 -10.20 -9.40 -7.50 -5.10
2022 17.60 32.80 36.40 37.80 38 37.20 -18.90 -17.70 -10.50 -7.90 -7.10 -4
Figure PP07-2: Number of hot days (with max temperature above 30 °C) in Slovenia, 1961-2022
Sources:

ARSO Meteorological Data Archive, Slovenian Environment Agency, 2023

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 8 11 14
1962 0 0 8 16 15 25
1963 0 0 15 15 14 14
1964 0 0 3 3 7 21
1965 0 1 3 9 9 8
1966 0 0 2 4 4 8
1967 0 1 13 14 18 19
1968 0 1 8 8 8 8
1969 0 1 5 7 6 21
1970 0 0 3 6 12 21
1971 0 1 12 12 18 30
1972 0 0 7 8 7 15
1973 0 0 2 5 8 25
1974 0 2 13 8 15 16
1975 0 0 0 2 3 4
1976 0 1 6 7 7 13
1977 0 0 1 2 3 2
1978 0 0 0 1 0 4
1979 0 0 5 9 5 18
1980 0 0 4 4 6 16
1981 0 0 4 7 6 9
1982 0 0 5 3 10 16
1983 0 8 13 11 17 29
1984 0 3 2 6 4 10
1985 0 0 8 8 15 28
1986 0 0 5 9 12 20
1987 0 0 9 10 8 16
1988 0 0 17 16 23 35
1989 0 0 4 3 7 10
1990 0 0 7 9 9 14
1991 0 1 10 9 15 32
1992 0 14 34 22 25 29
1993 0 1 24 25 20 24
1994 0 7 27 25 30 52
1995 0 1 6 6 14 21
1996 0 0 5 6 7 8
1997 0 0 1 0 4 11
1998 0 5 16 21 34 37
1999 0 0 8 13 13 18
2000 0 2 32 30 22 26
2001 0 3 26 30 31 35
2002 0 3 15 13 14 17
2003 0 13 52 56 55 68
2004 0 2 9 13 14 20
2005 0 3 14 15 16 21
2006 0 10 24 26 31 39
2007 0 5 28 25 24 34
2008 0 1 21 14 22 40
2009 0 1 13 23 26 38
2010 0 7 22 22 20 21
2011 0 7 23 28 29 28
2012 0 6 41 37 39 57
2013 0 16 29 29 35 43
2014 0 1 13 12 15 12
2015 0 11 40 40 43 51
2016 0 2 12 16 20 52
2017 0 6 33 46 42 45
2018 0 7 26 25 35 48
2019 0 10 34 34 37 57
2020 0 3 21 22 27 33
2021 0 5 27 37 39 45
2022 0 8 30 37 52 54
Figure PP07-3: Number of icing days (with max temperature below 0 °C) in Slovenia, 1961-2022
Sources:

ARSO Meteorological Data Archive, Slovenian Environment Agency, 2023

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 145 35 25 18 20 0
1962 197 48 33 30 28 1
1963 161 60 59 53 49 11
1964 180 42 33 34 29 0
1965 189 42 16 13 15 0
1966 170 33 21 18 23 0
1967 155 36 18 20 19 0
1968 170 43 34 26 28 1
1969 178 58 40 36 35 0
1970 181 43 25 21 22 0
1971 177 36 35 23 28 2
1972 190 49 32 30 22 0
1973 163 30 14 12 13 0
1974 203 8 1 2 1 0
1975 174 17 5 6 8 0
1976 179 43 26 22 16 0
1977 158 30 16 12 8 0
1978 177 42 24 23 17 0
1979 174 36 18 11 12 0
1980 179 53 31 20 21 0
1981 165 37 17 15 15 0
1982 161 28 28 26 20 0
1983 143 25 21 13 10 0
1984 182 38 19 17 12 0
1985 175 44 39 32 31 6
1986 163 45 42 35 33 0
1987 170 44 38 27 21 1
1988 154 16 10 6 11 0
1989 139 13 14 5 5 0
1990 132 28 18 16 16 0
1991 173 46 21 20 23 1
1992 137 21 11 14 14 0
1993 133 30 28 22 18 1
1994 141 17 14 12 5 0
1995 156 29 22 11 6 0
1996 169 38 46 42 39 3
1997 144 23 22 13 13 0
1998 153 28 19 21 17 0
1999 131 28 25 18 21 0
2000 130 18 18 11 13 0
2001 151 32 19 15 18 0
2002 129 20 22 18 14 0
2003 153 22 20 22 14 0
2004 152 30 17 13 13 0
2005 146 47 23 16 12 0
2006 135 27 25 14 15 0
2007 126 9 15 17 11 0
2008 153 15 10 8 8 0
2009 154 33 20 20 21 1
2010 169 56 29 22 25 0
2011 122 23 24 19 13 0
2012 130 34 19 20 20 6
2013 146 24 14 12 10 0
2014 115 14 13 10 6 0
2015 112 11 7 5 2 0
2016 149 7 17 14 11 0
2017 132 28 25 19 20 0
2018 113 26 13 11 7 2
2019 147 13 4 3 1 0
2020 100 10 7 3 0 0
2021 148 28 4 3 5 0
2022 122 13 4 2 2 0
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:

Source: Assessment of climate changes in Slovenia by the end of the 21st century, 2018

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

Assessment of climate changes in Slovenia by the end of the 21st century, 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
Other sources and literature

  1. Agencija RS za okolje, Naše okolje, mesečni bilten ARSO.
  2. Agencija RS za okolje, Izredni dogodki (16. 6. 2023).
  3. Svetovna meteorološka organizacija, 2013. The global climate 2001-2010, Decade of climate extremes.
  4. Svetovna meteorološka organizacija, 2023. State of the Global Climate 2022.
  5. Zakon o državni meteorološki, hidrološki, oceanografski in seizmološki službi (ZDMHS) (Uradni list RS, št. 60/17)
  6. Agencija RS za okolje, 2018. Ocena podnebnih sprememb v Sloveniji do konca 21. stoletja. Ljubljana, november 2018.
  7. Agencija RS za okolje, 2022. Slovenski vremenski rekordi.

Related indicators

Last modified
29.06.2023
Author(s)

Tanja Cegnar and Živa Vlahović, Slovenian Environment Agency