KAZALCI OKOLJA

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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 PS07-1: 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 PS07-2: 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 PS07-3: 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 PS07-4: Projected change in number of hot days (with max temperature above 30 °C) in Slovenia and associated reliability of change (2011-2040)
Figure PS07-5: Projected change in number of frost and icing days in Slovenia and associated reliability of change (2011-2040)

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.


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