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

Porto: Cooling and heating degree days - Cities and FUAs — Change in cooling was -149.21 % change on previous year in 2025. ◆ Volatile

Latest (2025)
-149.21 % change on previous year
Change on year
up 49.0%
Rank
9th
of 16 groups
All-time high
893.87 % change on previous year
in 2010
All-time low
-802.49 % change on previous year
in 2002
Years of data
69
1951–2025

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

-1.0k-50005001.0k195119882025

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

Analysis

Porto recorded -149.21 % change on previous year for cooling and heating degree days - cities and fuas — change in cooling in 2025.

That represents a change of up 49.0% on the previous year and down 256.7% over ten years.

Over the whole period, cooling and heating degree days - cities and fuas — change in cooling in Porto peaked at 893.87 % change on previous year in 2010 and was at its lowest, -802.49 % change on previous year, in 2002.

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 Porto, 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 Porto, 1951 to 2025.
Year % change on previous year Change
1951 -29.76 % change on previous year
1952 13.28 % change on previous year -144.6%
1953 105.64 % change on previous year +695.8%
1955 70.15 % change on previous year -33.6%
1956 -431.12 % change on previous year -714.5%
1957 101.45 % change on previous year -123.5%
1959 74.41 % change on previous year -26.6%
1960 -126.61 % change on previous year -270.1%
1961 135.03 % change on previous year -206.7%
1962 -81.52 % change on previous year -160.4%
1964 139.03 % change on previous year -270.5%
1965 -481.86 % change on previous year -446.6%
1966 98.99 % change on previous year -120.5%
1968 42.66 % change on previous year -56.9%
1969 64.26 % change on previous year +50.6%
1970 -3.92 % change on previous year -106.1%
1971 -386.18 % change on previous year +9751.0%
1972 -6.4 % change on previous year -98.3%
1973 41.03 % change on previous year -741.3%
1974 26.61 % change on previous year -35.1%
1975 -34.62 % change on previous year -230.1%
1976 56.42 % change on previous year -263.0%
1977 -299.95 % change on previous year -631.6%
1978 41.08 % change on previous year -113.7%
1979 53.13 % change on previous year +29.4%
1980 -162.5 % change on previous year -405.8%
1981 154.1 % change on previous year -194.8%
1982 -243.15 % change on previous year -257.8%
1983 -33.72 % change on previous year -86.1%
1984 21.61 % change on previous year -164.1%
1985 80.2 % change on previous year +271.1%
1986 -361.34 % change on previous year -550.5%
1987 209.57 % change on previous year -158.0%
1988 -190.05 % change on previous year -190.7%
1989 331.98 % change on previous year -274.7%
1990 -35.31 % change on previous year -110.6%
1991 -17.88 % change on previous year -49.4%
1992 -170.44 % change on previous year +853.5%
1993 -11.47 % change on previous year -93.3%
1994 -85.68 % change on previous year +647.0%
1995 134.88 % change on previous year -257.4%
1996 -205.19 % change on previous year -252.1%
1997 17.88 % change on previous year -108.7%
1998 151.87 % change on previous year +749.5%
1999 -468.18 % change on previous year -408.3%
2000 32.57 % change on previous year -107.0%
2001 79.24 % change on previous year +143.3%
2002 -802.49 % change on previous year -1112.7%
2003 184.93 % change on previous year -123.0%
2004 -97.55 % change on previous year -152.8%
2006 6.82 % change on previous year -107.0%
2007 -123.55 % change on previous year -1911.6%
2008 -190.92 % change on previous year +54.5%
2009 114.26 % change on previous year -159.8%
2010 893.87 % change on previous year +682.3%
2011 -58.28 % change on previous year -106.5%
2012 -167.79 % change on previous year +187.9%
2013 454.2 % change on previous year -370.7%
2014 -141.2 % change on previous year -131.1%
2015 95.23 % change on previous year -167.4%
2017 -45.42 % change on previous year -147.7%
2018 26.04 % change on previous year -157.3%
2019 -139.45 % change on previous year -635.5%
2020 228.36 % change on previous year -263.8%
2021 -282.66 % change on previous year -223.8%
2022 182.77 % change on previous year -164.7%
2023 -103.3 % change on previous year -156.5%
2024 -292.39 % change on previous year +183.0%
2025 -149.21 % change on previous year -49.0%

Averages by decade

DecadeAverage LowestHighest Years
1950s -13.71 % change on previous year -431.12 % change on previous year 105.64 % change on previous year 7
1960s -26.25 % change on previous year -481.86 % change on previous year 139.03 % change on previous year 8
1970s -51.28 % change on previous year -386.18 % change on previous year 56.42 % change on previous year 10
1980s -19.33 % change on previous year -361.34 % change on previous year 331.98 % change on previous year 10
1990s -68.95 % change on previous year -468.18 % change on previous year 151.87 % change on previous year 10
2000s -88.52 % change on previous year -802.49 % change on previous year 184.93 % change on previous year 9
2010s 101.91 % change on previous year -167.79 % change on previous year 893.87 % change on previous year 9
2020s -69.41 % change on previous year -292.39 % change on previous year 228.36 % change on previous year 6

More reference data data for Porto

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Frequently asked questions

What is cooling and heating degree days - cities and fuas — change in cooling in Porto?
Cooling and heating degree days - cities and fuas — change in cooling in Porto was -149.21 % 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 Porto?
The highest recorded value was 893.87 % change on previous year in 2010.
What is the lowest cooling and heating degree days - cities and fuas — change in cooling recorded in Porto?
The lowest recorded value was -802.49 % change on previous year in 2002.
How does Porto rank for cooling and heating degree days - cities and fuas — change in cooling?
Porto ranks 9th out of 16 groups with data for 2025.
Is cooling and heating degree days - cities and fuas — change in cooling rising or falling in Porto?
Over the last ten years it is down 256.7%. The long-run trend across the full record is volatile.
Where does this Porto 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 Porto. Statizoid, drawing on Statizoid (derived). Retrieved 06 September 2026, from https://reference.statizoid.com/stat/cooling-and-heating-degree-days-cities-and-fuas-change-in-cooling-degree-days-from-1981-2/porto/

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<a href="https://reference.statizoid.com/stat/cooling-and-heating-degree-days-cities-and-fuas-change-in-cooling-degree-days-from-1981-2/porto/">Cooling and heating degree days - Cities and FUAs — Change in cooling in Porto</a> — Statizoid

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.