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

Stara Zagora: Cooling and heating degree days - Cities and FUAs — Cooling degree was -35.71 % change on previous year in 2025. ◆ Volatile

Latest (2025)
-35.71 % change on previous year
Change on year
down 225.7%
Rank
604th
of 1306 regions
All-time high
99.81 % change on previous year
in 1962
All-time low
-58.12 % change on previous year
in 1955
Years of data
75
1951–2025

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

-50050100195119882025

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

Analysis

Stara Zagora recorded -35.71 % change on previous year for cooling and heating degree days - cities and fuas — cooling degree in 2025.

Compared with earlier readings it is down 225.7% on the previous year and down 185.6% over ten years.

Over the whole period, cooling and heating degree days - cities and fuas — cooling degree in Stara Zagora peaked at 99.81 % change on previous year in 1962 and was at its lowest, -58.12 % change on previous year, in 1955.

That places Stara Zagora 604th 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 — Cooling degree in Stara Zagora, year by year

Annual values for Cooling and heating degree days - Cities and FUAs — Cooling degree days, annual growth rate in Stara Zagora, 1951 to 2025.
Year % change on previous year Change
1951 -16.07 % change on previous year
1952 6.92 % change on previous year -143.1%
1953 -37.5 % change on previous year -642.0%
1954 22.11 % change on previous year -159.0%
1955 -58.12 % change on previous year -362.9%
1956 90.2 % change on previous year -255.2%
1957 3.13 % change on previous year -96.5%
1958 4.46 % change on previous year +42.6%
1959 -38.73 % change on previous year -968.2%
1960 2.85 % change on previous year -107.3%
1961 1.51 % change on previous year -46.9%
1962 99.81 % change on previous year +6499.9%
1963 -24.94 % change on previous year -125.0%
1964 -36.52 % change on previous year +46.5%
1965 42.17 % change on previous year -215.5%
1966 -26.87 % change on previous year -163.7%
1967 -4.95 % change on previous year -81.6%
1968 23.86 % change on previous year -582.3%
1969 -1.06 % change on previous year -104.4%
1970 6.49 % change on previous year -711.6%
1971 -30.49 % change on previous year -569.8%
1972 22.12 % change on previous year -172.6%
1973 -17.92 % change on previous year -181.0%
1974 20.8 % change on previous year -216.1%
1975 -0.9304 % change on previous year -104.5%
1976 -43.2 % change on previous year +4543.1%
1977 88.7 % change on previous year -305.3%
1978 -30.21 % change on previous year -134.1%
1979 30.68 % change on previous year -201.6%
1980 -13.59 % change on previous year -144.3%
1981 38.5 % change on previous year -383.3%
1982 -17.23 % change on previous year -144.8%
1983 -16.83 % change on previous year -2.3%
1984 14.97 % change on previous year -188.9%
1985 28.33 % change on previous year +89.2%
1986 -9.62 % change on previous year -134.0%
1987 42.1 % change on previous year -537.7%
1988 -0.3964 % change on previous year -100.9%
1989 -35.29 % change on previous year +8801.8%
1990 33.01 % change on previous year -193.6%
1991 -30.28 % change on previous year -191.7%
1992 47.84 % change on previous year -258.0%
1993 4.27 % change on previous year -91.1%
1994 36.11 % change on previous year +745.5%
1995 -42.18 % change on previous year -216.8%
1996 17.1 % change on previous year -140.5%
1997 -21.01 % change on previous year -222.9%
1998 44.43 % change on previous year -311.5%
1999 2.5 % change on previous year -94.4%
2000 39.81 % change on previous year +1495.2%
2001 -13.6 % change on previous year -134.2%
2002 -28.84 % change on previous year +112.1%
2003 34.07 % change on previous year -218.1%
2004 -48.21 % change on previous year -241.5%
2005 -0.5126 % change on previous year -98.9%
2006 58.77 % change on previous year -11565.3%
2007 39.24 % change on previous year -33.2%
2008 -16.91 % change on previous year -143.1%
2009 -14.13 % change on previous year -16.4%
2010 12.67 % change on previous year -189.7%
2011 -1.19 % change on previous year -109.4%
2012 67.16 % change on previous year -5734.3%
2013 -34.07 % change on previous year -150.7%
2014 -28.22 % change on previous year -17.2%
2015 41.71 % change on previous year -247.8%
2016 10.25 % change on previous year -75.4%
2017 11.76 % change on previous year +14.8%
2018 -25.59 % change on previous year -317.6%
2019 10.77 % change on previous year -142.1%
2020 20.65 % change on previous year +91.8%
2021 5.67 % change on previous year -72.6%
2022 -10.91 % change on previous year -292.7%
2023 22.42 % change on previous year -305.4%
2024 28.42 % change on previous year +26.8%
2025 -35.71 % change on previous year -225.7%

Averages by decade

DecadeAverage LowestHighest Years
1950s -2.62 % change on previous year -58.12 % change on previous year 90.2 % change on previous year 9
1960s 7.59 % change on previous year -36.52 % change on previous year 99.81 % change on previous year 10
1970s 4.61 % change on previous year -43.2 % change on previous year 88.7 % change on previous year 10
1980s 3.09 % change on previous year -35.29 % change on previous year 42.1 % change on previous year 10
1990s 9.18 % change on previous year -42.18 % change on previous year 47.84 % change on previous year 10
2000s 4.97 % change on previous year -48.21 % change on previous year 58.77 % change on previous year 10
2010s 6.52 % change on previous year -34.07 % change on previous year 67.16 % change on previous year 10
2020s 5.09 % change on previous year -35.71 % change on previous year 28.42 % 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 — cooling degree in Stara Zagora?
Cooling and heating degree days - cities and fuas — cooling degree in Stara Zagora was -35.71 % change on previous year in 2025, according to Statizoid (derived).
What is the highest cooling and heating degree days - cities and fuas — cooling degree recorded in Stara Zagora?
The highest recorded value was 99.81 % change on previous year in 1962.
What is the lowest cooling and heating degree days - cities and fuas — cooling degree recorded in Stara Zagora?
The lowest recorded value was -58.12 % change on previous year in 1955.
How does Stara Zagora rank for cooling and heating degree days - cities and fuas — cooling degree?
Stara Zagora ranks 604th out of 1306 regions with data for 2025.
Is cooling and heating degree days - cities and fuas — cooling degree rising or falling in Stara Zagora?
Over the last ten years it is down 185.6%. 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 — Cooling degree days, annual growth rate. Statizoid updates them automatically from the source API.

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Cooling and heating degree days - Cities and FUAs — Cooling degree 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-cooling-degree-days-annual-growth-rate/stara-zagora/

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<a href="https://reference.statizoid.com/stat/cooling-and-heating-degree-days-cities-and-fuas-cooling-degree-days-annual-growth-rate/stara-zagora/">Cooling and heating degree days - Cities and FUAs — Cooling degree in Stara Zagora</a> — Statizoid

How this figure is calculated

The year-on-year percentage change in Cooling and heating degree days - Cities and FUAs — Cooling degree days. 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 — Cooling degree days, 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, 97,987 data points, 1951–2025
Last refreshed

The year-on-year percentage change in Cooling and heating degree days - Cities and FUAs — Cooling degree days. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.