Cooling and heating degree days - Cities and FUAs — Cooling degree in Sliven
Sliven: Cooling and heating degree days - Cities and FUAs — Cooling degree was -39.98 % change on previous year in 2025. ◆ Volatile
Latest (2025)
-39.98 % change on previous year
Change on year
down 229.0%
Rank
673rd
of 1306 regions
All-time high
103.77 % change on previous year
in 1977
All-time low
-57.88 % change on previous year
in 1955
Years of data
75
1951–2025
Cooling and heating degree days - Cities and FUAs — Cooling degree in Sliven, 1951–2025
Source: Statizoid (derived). Measured in % change on previous year.
Analysis
The most recent figure for cooling and heating degree days - cities and fuas — cooling degree in Sliven is -39.98 % change on previous year, measured in 2025.
That represents a change of down 229.0% on the previous year and down 167.8% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas — cooling degree in Sliven peaked at 103.77 % change on previous year in 1977 and was at its lowest, -57.88 % change on previous year, in 1955.
That places Sliven 673rd 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 Sliven, year by year
| Year | % change on previous year | Change |
|---|---|---|
| 1951 | -24.25 % change on previous year | — |
| 1952 | 13.93 % change on previous year | -157.5% |
| 1953 | -41.03 % change on previous year | -394.5% |
| 1954 | 20.52 % change on previous year | -150.0% |
| 1955 | -57.88 % change on previous year | -382.1% |
| 1956 | 85.59 % change on previous year | -247.9% |
| 1957 | 22.02 % change on previous year | -74.3% |
| 1958 | -5.87 % change on previous year | -126.7% |
| 1959 | -43.19 % change on previous year | +635.7% |
| 1960 | 4.19 % change on previous year | -109.7% |
| 1961 | 5.24 % change on previous year | +25.0% |
| 1962 | 95.54 % change on previous year | +1724.7% |
| 1963 | -21.86 % change on previous year | -122.9% |
| 1964 | -45.67 % change on previous year | +108.9% |
| 1965 | 62.73 % change on previous year | -237.4% |
| 1966 | -29.95 % change on previous year | -147.8% |
| 1967 | -4.96 % change on previous year | -83.5% |
| 1968 | 19.14 % change on previous year | -486.1% |
| 1969 | 0.4816 % change on previous year | -97.5% |
| 1970 | 10.33 % change on previous year | +2044.0% |
| 1971 | -31.58 % change on previous year | -405.8% |
| 1972 | 28.49 % change on previous year | -190.2% |
| 1973 | -23.32 % change on previous year | -181.9% |
| 1974 | 23.78 % change on previous year | -201.9% |
| 1975 | -7.79 % change on previous year | -132.8% |
| 1976 | -45.32 % change on previous year | +481.5% |
| 1977 | 103.77 % change on previous year | -329.0% |
| 1978 | -33.6 % change on previous year | -132.4% |
| 1979 | 34.27 % change on previous year | -202.0% |
| 1980 | -4.72 % change on previous year | -113.8% |
| 1981 | 39.27 % change on previous year | -931.8% |
| 1982 | -23.13 % change on previous year | -158.9% |
| 1983 | -16.81 % change on previous year | -27.3% |
| 1984 | 31.34 % change on previous year | -286.4% |
| 1985 | 12.89 % change on previous year | -58.9% |
| 1986 | -0.6038 % change on previous year | -104.7% |
| 1987 | 34.85 % change on previous year | -5871.3% |
| 1988 | 1.04 % change on previous year | -97.0% |
| 1989 | -33.97 % change on previous year | -3367.1% |
| 1990 | 30.35 % change on previous year | -189.3% |
| 1991 | -31.47 % change on previous year | -203.7% |
| 1992 | 35.16 % change on previous year | -211.7% |
| 1993 | 5.89 % change on previous year | -83.3% |
| 1994 | 30.4 % change on previous year | +416.2% |
| 1995 | -39.55 % change on previous year | -230.1% |
| 1996 | 28.44 % change on previous year | -171.9% |
| 1997 | -26.58 % change on previous year | -193.4% |
| 1998 | 69.03 % change on previous year | -359.7% |
| 1999 | -10.65 % change on previous year | -115.4% |
| 2000 | 52.3 % change on previous year | -590.9% |
| 2001 | -13.21 % change on previous year | -125.3% |
| 2002 | -24.5 % change on previous year | +85.5% |
| 2003 | 32.7 % change on previous year | -233.5% |
| 2004 | -52.52 % change on previous year | -260.6% |
| 2005 | 2.85 % change on previous year | -105.4% |
| 2006 | 55.32 % change on previous year | +1838.2% |
| 2007 | 63.65 % change on previous year | +15.0% |
| 2008 | -24.64 % change on previous year | -138.7% |
| 2009 | -18 % change on previous year | -26.9% |
| 2010 | 15.05 % change on previous year | -183.6% |
| 2011 | -9.03 % change on previous year | -160.0% |
| 2012 | 87.17 % change on previous year | -1065.7% |
| 2013 | -41.38 % change on previous year | -147.5% |
| 2014 | -26.91 % change on previous year | -35.0% |
| 2015 | 58.99 % change on previous year | -319.2% |
| 2016 | 2.61 % change on previous year | -95.6% |
| 2017 | 10.43 % change on previous year | +298.8% |
| 2018 | -30.7 % change on previous year | -394.5% |
| 2019 | 13.45 % change on previous year | -143.8% |
| 2020 | 19.17 % change on previous year | +42.6% |
| 2021 | 2.55 % change on previous year | -86.7% |
| 2022 | 3.75 % change on previous year | +47.1% |
| 2023 | 10.59 % change on previous year | +182.1% |
| 2024 | 30.99 % change on previous year | +192.6% |
| 2025 | -39.98 % change on previous year | -229.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | -3.35 % change on previous year | -57.88 % change on previous year | 85.59 % change on previous year | 9 |
| 1960s | 8.49 % change on previous year | -45.67 % change on previous year | 95.54 % change on previous year | 10 |
| 1970s | 5.9 % change on previous year | -45.32 % change on previous year | 103.77 % change on previous year | 10 |
| 1980s | 4.02 % change on previous year | -33.97 % change on previous year | 39.27 % change on previous year | 10 |
| 1990s | 9.1 % change on previous year | -39.55 % change on previous year | 69.03 % change on previous year | 10 |
| 2000s | 7.4 % change on previous year | -52.52 % change on previous year | 63.65 % change on previous year | 10 |
| 2010s | 7.97 % change on previous year | -41.38 % change on previous year | 87.17 % change on previous year | 10 |
| 2020s | 4.51 % change on previous year | -39.98 % change on previous year | 30.99 % change on previous year | 6 |
More reference data data for Sliven
- Cooling and heating degree days - Cities and FUAs — Change in cooling -69.64 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 195.56 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 56.8 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs 1,825 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -419.34 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -13.08 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -2.59 % change on previous year (2025)
- Precipitation - Cities and FUAs — Change in extreme precipitation -1.09 Days per year (2024)
- Precipitation - Cities and FUAs — Extreme precipitation days 3.68 Days per year (2024)
- Projected deaths by age, sex, type of projection and NUTS 3 region 1,454 Person (2100)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas — cooling degree in Sliven?
- Cooling and heating degree days - cities and fuas — cooling degree in Sliven was -39.98 % 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 Sliven?
- The highest recorded value was 103.77 % change on previous year in 1977.
- What is the lowest cooling and heating degree days - cities and fuas — cooling degree recorded in Sliven?
- The lowest recorded value was -57.88 % change on previous year in 1955.
- How does Sliven rank for cooling and heating degree days - cities and fuas — cooling degree?
- Sliven ranks 673rd out of 1306 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas — cooling degree rising or falling in Sliven?
- Over the last ten years it is down 167.8%. The long-run trend across the full record is volatile.
- Where does this Sliven 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.
Download this data
CSV · JSON — 75 observations, free to reuse under Derived by Statizoid from the sources named on the page.
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
- Cooling and heating degree days - Cities and FUAs — Cooling degree Organisation for Economic Co-operation and Development
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
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.