Air temperature, hot days, tropical nights and icing days - Cities in Porto
Porto: Air temperature, hot days, tropical nights and icing days - Cities was 0.0565 Degrees celsius in 2025. ◆ Volatile
Air temperature, hot days, tropical nights and icing days - Cities in Porto, 1981–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degrees celsius.
Analysis
The most recent figure for air temperature, hot days, tropical nights and icing days - cities in Porto is 0.0565 Degrees celsius, measured in 2025.
That represents a change of down 94.5% on the previous year and down 88.8% over ten years.
Over the whole period, air temperature, hot days, tropical nights and icing days - cities in Porto peaked at 1.12 Degrees celsius in 2022 and was at its lowest, -0.7662 Degrees celsius, in 1993.
The series is highly variable year to year, so single readings are best treated with caution.
Air temperature, hot days, tropical nights and icing days - Cities in Porto, year by year
| Year | Degrees celsius | Change |
|---|---|---|
| 1981 | -0.0489 Degrees celsius | — |
| 1982 | -0.2951 Degrees celsius | +502.9% |
| 1983 | -0.4222 Degrees celsius | +43.1% |
| 1984 | -0.5918 Degrees celsius | +40.2% |
| 1985 | -0.2072 Degrees celsius | -65.0% |
| 1986 | -0.6399 Degrees celsius | +208.8% |
| 1987 | 0.4027 Degrees celsius | -162.9% |
| 1988 | -0.2397 Degrees celsius | -159.5% |
| 1989 | 0.9787 Degrees celsius | -508.3% |
| 1990 | 0.5812 Degrees celsius | -40.6% |
| 1991 | -0.0885 Degrees celsius | -115.2% |
| 1992 | -0.4434 Degrees celsius | +401.2% |
| 1993 | -0.7662 Degrees celsius | +72.8% |
| 1994 | -0.291 Degrees celsius | -62.0% |
| 1995 | 1.07 Degrees celsius | -467.6% |
| 1996 | -0.2106 Degrees celsius | -119.7% |
| 1997 | 0.8419 Degrees celsius | -499.8% |
| 1998 | 0.2738 Degrees celsius | -67.5% |
| 1999 | -0.3873 Degrees celsius | -241.5% |
| 2000 | -0.2617 Degrees celsius | -32.4% |
| 2001 | -0.1133 Degrees celsius | -56.7% |
| 2002 | 0.0094 Degrees celsius | -108.3% |
| 2003 | 0.2931 Degrees celsius | +3006.8% |
| 2004 | -0.0538 Degrees celsius | -118.4% |
| 2005 | 0.0787 Degrees celsius | -246.1% |
| 2006 | 0.6283 Degrees celsius | +698.8% |
| 2007 | -0.122 Degrees celsius | -119.4% |
| 2008 | -0.4779 Degrees celsius | +291.8% |
| 2009 | 0.2777 Degrees celsius | -158.1% |
| 2010 | 0.2254 Degrees celsius | -18.8% |
| 2011 | 0.7127 Degrees celsius | +216.2% |
| 2012 | -0.3817 Degrees celsius | -153.6% |
| 2013 | 0.1559 Degrees celsius | -140.8% |
| 2014 | 0.2908 Degrees celsius | +86.6% |
| 2015 | 0.5038 Degrees celsius | +73.2% |
| 2016 | 0.4896 Degrees celsius | -2.8% |
| 2017 | 0.7074 Degrees celsius | +44.5% |
| 2018 | 0.3144 Degrees celsius | -55.6% |
| 2019 | 0.139 Degrees celsius | -55.8% |
| 2020 | 0.7408 Degrees celsius | +432.8% |
| 2021 | 0.2051 Degrees celsius | -72.3% |
| 2022 | 1.12 Degrees celsius | +446.2% |
| 2023 | 0.9898 Degrees celsius | -11.7% |
| 2024 | 1.02 Degrees celsius | +3.1% |
| 2025 | 0.0565 Degrees celsius | -94.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -0.1182 Degrees celsius | -0.6399 Degrees celsius | 0.9787 Degrees celsius | 9 |
| 1990s | 0.058 Degrees celsius | -0.7662 Degrees celsius | 1.07 Degrees celsius | 10 |
| 2000s | 0.0258 Degrees celsius | -0.4779 Degrees celsius | 0.6283 Degrees celsius | 10 |
| 2010s | 0.3157 Degrees celsius | -0.3817 Degrees celsius | 0.7127 Degrees celsius | 10 |
| 2020s | 0.6889 Degrees celsius | 0.0565 Degrees celsius | 1.12 Degrees celsius | 6 |
Countries ranked near Porto
- 1 Luxembourg 0.0872 Degrees celsius compare
- 2 Armenia -0.2189 Degrees celsius compare
More climate change data for Porto
- Air temperature, hot days, tropical nights and icing days - Cities 14.64 Degrees celsius (2025)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 17.36 Degrees celsius (2060)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 2.43 Degrees celsius (2060)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.02 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.22 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.52 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.49 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0.47 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 0.58 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions total 1.91 Tonnes of CO2-equivalent (2024)
Frequently asked questions
- What is air temperature, hot days, tropical nights and icing days - cities in Porto?
- Air temperature, hot days, tropical nights and icing days - cities in Porto was 0.0565 Degrees celsius in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest air temperature, hot days, tropical nights and icing days - cities recorded in Porto?
- The highest recorded value was 1.12 Degrees celsius in 2022.
- What is the lowest air temperature, hot days, tropical nights and icing days - cities recorded in Porto?
- The lowest recorded value was -0.7662 Degrees celsius in 1993.
- How does Porto rank for air temperature, hot days, tropical nights and icing days - cities?
- Porto ranks 4th out of 9 groups with data for 2025.
- Is air temperature, hot days, tropical nights and icing days - cities rising or falling in Porto?
- Over the last ten years it is down 88.8%. The long-run trend across the full record is volatile.
- Where does this Porto data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Air temperature, hot days, tropical nights and icing days - Cities and FUAs — Change in air temperature at 2 meters from 1981–2010 period. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 45 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset provides indicators of air temperature, hot days, tropical nights and icing days. Data sources and methodology Indicators are estimated using ERA5-Land data. Air temperature indicators correspond to the average annual air temperature at a height of 2 meters. Hot days correspond to the number of days when the maximum temperature exceeds 35°C. Tropical nights correspond to the days when the minimum temperature is above 20°C, and icing days to the number of days when the maximum temperature is below 0°C. ERA5-Land is used as it provides harmonised, globally consistent coverage at fine spatial resolution (0.1 degree), enabling the production of comparable subnational indicators also where national meteorological data are not available at the required scale. These estimates may differ from official subnational climate statistics due to differences in methodological approaches, such as the use of reanalysis based top down modelling versus in situ observations, along with variations in input data sources, spatial resolution, and the models and algorithms used to generate temperature estimates. Defining FUAs and cities The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of: A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city. A commuting zone – including all local areas where at least 15% of employed residents work in the city. The delineation process includes: Assigning municipalities surrounded by a single FUA to that FUA. Excluding non-contiguous municipalities. The correspondence table between SAUs and FUAs/cities is available in parquet and csv format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries. Cite this dataset OECD Regions, cities and local areas database (Air temperature, hot days, tropical nights and icing days - FUAs), http://oe.cd/geostats Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email CitiesStat@oecd.org