Cooling and heating degree days - Cities and FUAs — Change in cooling in Stara Zagora

Stara Zagora: Cooling and heating degree days - Cities and FUAs — Change in cooling was -61.46 % change on previous year in 2025. ◆ Volatile

Latest (2025)
-61.46 % change on previous year
Change on year
down 199.9%
Rank
331st
of 1306 regions
All-time high
834.18 % change on previous year
in 1994
All-time low
-549.68 % change on previous year
in 1997
Years of data
71
1951–2025

Cooling and heating degree days - Cities and FUAs — Change in cooling in Stara Zagora, 1951–2025

-50005001.0k195119882025

Source: Statizoid (derived). Measured in % change on previous year.

Analysis

In 2025, cooling and heating degree days - cities and fuas — change in cooling in Stara Zagora stood at -61.46 % change on previous year.

The figure is down 199.9% on the previous year and down 111.3% over ten years.

Over the whole period, cooling and heating degree days - cities and fuas — change in cooling in Stara Zagora peaked at 834.18 % change on previous year in 1994 and was at its lowest, -549.68 % change on previous year, in 1997.

That places Stara Zagora 331st out of 1306 regions with data for 2025, putting it in the middle of the range.

The series is highly variable year to year, so single readings are best treated with caution.

Cooling and heating degree days - Cities and FUAs — Change in cooling in Stara Zagora, year by year

Annual values for Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period, annual growth rate in Stara Zagora, 1951 to 2025.
Year % change on previous year Change
1951 -33.32 % change on previous year
1952 18.06 % change on previous year -154.2%
1953 -88.65 % change on previous year -590.9%
1954 287.95 % change on previous year -424.8%
1955 -238.25 % change on previous year -182.7%
1956 111.98 % change on previous year -147.0%
1957 61.64 % change on previous year -45.0%
1958 56.08 % change on previous year -9.0%
1959 -325.85 % change on previous year -681.0%
1960 6.5 % change on previous year -102.0%
1961 3.8 % change on previous year -41.6%
1962 264.44 % change on previous year +6864.8%
1963 -80.28 % change on previous year -130.4%
1964 -447.54 % change on previous year +457.5%
1965 94.39 % change on previous year -121.1%
1967 -12.64 % change on previous year -113.4%
1968 51.43 % change on previous year -507.1%
1969 -5.83 % change on previous year -111.3%
1970 33.35 % change on previous year -671.8%
1971 -250.33 % change on previous year -850.7%
1972 36.04 % change on previous year -114.4%
1973 -55.73 % change on previous year -254.6%
1974 34.1 % change on previous year -161.2%
1975 -2.8 % change on previous year -108.2%
1976 -125.12 % change on previous year +4376.5%
1977 64.83 % change on previous year -151.8%
1978 -118.43 % change on previous year -282.7%
1979 38.43 % change on previous year -132.5%
1980 -36.14 % change on previous year -194.0%
1981 64.98 % change on previous year -279.8%
1982 -115.01 % change on previous year -277.0%
1983 -43.23 % change on previous year -62.4%
1984 22.33 % change on previous year -151.6%
1985 62.54 % change on previous year +180.1%
1986 -72.76 % change on previous year -216.3%
1987 166.6 % change on previous year -329.0%
1988 -3.35 % change on previous year -102.0%
1989 -307.04 % change on previous year +9073.5%
1990 89.79 % change on previous year -129.2%
1992 100.76 % change on previous year +12.2%
1994 834.18 % change on previous year +727.9%
1995 -141.98 % change on previous year -117.0%
1996 79.25 % change on previous year -155.8%
1997 -549.68 % change on previous year -793.6%
1998 141.33 % change on previous year -125.7%
1999 27.74 % change on previous year -80.4%
2000 355.05 % change on previous year +1180.0%
2001 -37.26 % change on previous year -110.5%
2002 -108.85 % change on previous year +192.1%
2004 -210.05 % change on previous year +93.0%
2005 -1.05 % change on previous year -99.5%
2006 118.65 % change on previous year -11387.8%
2007 674.29 % change on previous year +468.3%
2008 -52.24 % change on previous year -107.7%
2009 -75.98 % change on previous year +45.4%
2010 243.5 % change on previous year -420.5%
2011 -7.51 % change on previous year -103.1%
2012 452.31 % change on previous year -6120.4%
2013 -69.44 % change on previous year -115.4%
2014 -124.12 % change on previous year +78.7%
2015 545.9 % change on previous year -539.8%
2016 42.62 % change on previous year -92.2%
2017 37.82 % change on previous year -11.3%
2018 -66.73 % change on previous year -276.5%
2019 62.8 % change on previous year -194.1%
2020 81.95 % change on previous year +30.5%
2021 14.91 % change on previous year -81.8%
2022 -26.41 % change on previous year -277.2%
2023 65.66 % change on previous year -348.6%
2024 61.51 % change on previous year -6.3%
2025 -61.46 % change on previous year -199.9%

Averages by decade

DecadeAverage LowestHighest Years
1950s -16.71 % change on previous year -325.85 % change on previous year 287.95 % change on previous year 9
1960s -13.97 % change on previous year -447.54 % change on previous year 264.44 % change on previous year 9
1970s -34.57 % change on previous year -250.33 % change on previous year 64.83 % change on previous year 10
1980s -26.11 % change on previous year -307.04 % change on previous year 166.6 % change on previous year 10
1990s 72.67 % change on previous year -549.68 % change on previous year 834.18 % change on previous year 8
2000s 73.62 % change on previous year -210.05 % change on previous year 674.29 % change on previous year 9
2010s 111.71 % change on previous year -124.12 % change on previous year 545.9 % change on previous year 10
2020s 22.69 % change on previous year -61.46 % change on previous year 81.95 % change on previous year 6

More reference data data for Stara Zagora

All data for Stara Zagora →

Frequently asked questions

What is cooling and heating degree days - cities and fuas — change in cooling in Stara Zagora?
Cooling and heating degree days - cities and fuas — change in cooling in Stara Zagora was -61.46 % change on previous year in 2025, according to Statizoid (derived).
What is the highest cooling and heating degree days - cities and fuas — change in cooling recorded in Stara Zagora?
The highest recorded value was 834.18 % change on previous year in 1994.
What is the lowest cooling and heating degree days - cities and fuas — change in cooling recorded in Stara Zagora?
The lowest recorded value was -549.68 % change on previous year in 1997.
How does Stara Zagora rank for cooling and heating degree days - cities and fuas — change in cooling?
Stara Zagora ranks 331st out of 1306 regions with data for 2025.
Is cooling and heating degree days - cities and fuas — change in cooling rising or falling in Stara Zagora?
Over the last ten years it is down 111.3%. The long-run trend across the full record is volatile.
Where does this Stara Zagora data come from?
The figures come from Statizoid (derived), published as part of Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period, annual growth rate. Statizoid updates them automatically from the source API.

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Cooling and heating degree days - Cities and FUAs — Change in cooling in Stara Zagora. Statizoid, drawing on Statizoid (derived). Retrieved 08 September 2026, from https://reference.statizoid.com/stat/cooling-and-heating-degree-days-cities-and-fuas-change-in-cooling-degree-days-from-1981-2/stara-zagora/

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How this figure is calculated

The year-on-year percentage change in Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.

Computed from

Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.

About this data

Indicator
Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period, annual growth rate
Unit
% change on previous year
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
1,324 places, 93,596 data points, 1951–2025
Last refreshed

The year-on-year percentage change in Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.