Heat stress - Cities and FUAs — Mean population exposure to heat in Sintra
Sintra: Heat stress - Cities and FUAs — Mean population exposure to heat was 0.604 Days per year in 2025. ◆ Volatile
Heat stress - Cities and FUAs — Mean population exposure to heat in Sintra, 1981–2025
Source: Organisation for Economic Co-operation and Development. Measured in Days per year.
Analysis
Sintra recorded 0.604 Days per year for heat stress - cities and fuas — mean population exposure to heat in 2025.
Compared with earlier readings it is up 298.2% on the previous year and up 298.8% over ten years.
Over the whole period, heat stress - cities and fuas — mean population exposure to heat in Sintra peaked at 3.88 Days per year in 2003 and was at its lowest, 0.057 Days per year, in 1994.
Sintra ranks 1230th of 1315 regions on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Heat stress - Cities and FUAs — Mean population exposure to heat in Sintra, year by year
| Year | Days per year | Change |
|---|---|---|
| 1981 | 0.3167 Days per year | — |
| 1982 | 0.2342 Days per year | -26.1% |
| 1983 | 0.2724 Days per year | +16.3% |
| 1984 | 0.2257 Days per year | -17.1% |
| 1985 | 1.08 Days per year | +377.4% |
| 1986 | 0.0929 Days per year | -91.4% |
| 1987 | 2.73 Days per year | +2843.1% |
| 1988 | 0.6232 Days per year | -77.2% |
| 1989 | 0.5141 Days per year | -17.5% |
| 1990 | 0.6429 Days per year | +25.1% |
| 1991 | 1.48 Days per year | +130.2% |
| 1992 | 0.2288 Days per year | -84.5% |
| 1993 | 0.1387 Days per year | -39.4% |
| 1994 | 0.057 Days per year | -58.9% |
| 1995 | 0.151 Days per year | +164.6% |
| 1996 | 0.1098 Days per year | -27.3% |
| 1997 | 0.1484 Days per year | +35.2% |
| 1998 | 0.1485 Days per year | +0.1% |
| 1999 | 0.0817 Days per year | -45.0% |
| 2000 | 0.0916 Days per year | +12.1% |
| 2001 | 0.1364 Days per year | +48.9% |
| 2002 | 0.0586 Days per year | -57.0% |
| 2003 | 3.88 Days per year | +6518.7% |
| 2004 | 0.1495 Days per year | -96.1% |
| 2005 | 0.6032 Days per year | +303.4% |
| 2006 | 3.34 Days per year | +453.2% |
| 2007 | 0.1556 Days per year | -95.3% |
| 2008 | 0.0579 Days per year | -62.8% |
| 2009 | 0.1756 Days per year | +203.3% |
| 2010 | 1.47 Days per year | +738.7% |
| 2011 | 0.3204 Days per year | -78.2% |
| 2012 | 0.6051 Days per year | +88.8% |
| 2013 | 0.4005 Days per year | -33.8% |
| 2014 | 0.0852 Days per year | -78.7% |
| 2015 | 0.1514 Days per year | +77.7% |
| 2016 | 0.612 Days per year | +304.1% |
| 2017 | 0.3554 Days per year | -41.9% |
| 2018 | 2.25 Days per year | +534.0% |
| 2019 | 0.0872 Days per year | -96.1% |
| 2020 | 0.1771 Days per year | +103.0% |
| 2021 | 0.0839 Days per year | -52.6% |
| 2022 | 0.6123 Days per year | +630.2% |
| 2023 | 0.428 Days per year | -30.1% |
| 2024 | 0.1517 Days per year | -64.6% |
| 2025 | 0.604 Days per year | +298.2% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.6768 Days per year | 0.0929 Days per year | 2.73 Days per year | 9 |
| 1990s | 0.3187 Days per year | 0.057 Days per year | 1.48 Days per year | 10 |
| 2000s | 0.8643 Days per year | 0.0579 Days per year | 3.88 Days per year | 10 |
| 2010s | 0.6344 Days per year | 0.0852 Days per year | 2.25 Days per year | 10 |
| 2020s | 0.3428 Days per year | 0.0839 Days per year | 0.6123 Days per year | 6 |
More population data for Sintra
- Population by age and sex - Cities and FUAs 400,947 Persons (2024)
- Population by citizenship - Cities and FUAs 16 Percentage of population (2023)
- Population and built-up density - Cities and FUAs — Urbanised area 24 Square kilometres (2030)
Frequently asked questions
- What is heat stress - cities and fuas — mean population exposure to heat in Sintra?
- Heat stress - cities and fuas — mean population exposure to heat in Sintra was 0.604 Days per year in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest heat stress - cities and fuas — mean population exposure to heat recorded in Sintra?
- The highest recorded value was 3.88 Days per year in 2003.
- What is the lowest heat stress - cities and fuas — mean population exposure to heat recorded in Sintra?
- The lowest recorded value was 0.057 Days per year in 1994.
- How does Sintra rank for heat stress - cities and fuas — mean population exposure to heat?
- Sintra ranks 1230th out of 1315 regions with data for 2025.
- Is heat stress - cities and fuas — mean population exposure to heat rising or falling in Sintra?
- Over the last ten years it is up 298.8%. The long-run trend across the full record is volatile.
- Where does this Sintra data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Heat stress - Cities and FUAs — Mean population exposure to heat stress. 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 an indicator of population exposure to heat stress. Data sources and methodology The indicator uses the Universal Thermal Comfort Index (UTCI). The UTCI enables to assess the impact of atmospheric conditions on the human body by considering air temperature, wind, radiation and humidity. UTCI values from 32°C to 38°C are considered as strong heat stress, from 38°C to 46°C as very strong heat stress, and above 46°C as extreme heat stress. Population exposure to heat stress was computed using the hourly thermal comfort indices grids from the Copernicus Climate Data Store (Di Napoli C. et al.). For each 0.25° by 0.25° grid cell, the number of days for which the maximum UTCI value is above each heat stress threshold (32°C, 38°C and 46°C) is computed. FUA and city level indicators correspond to the population-weighted average number of days above each heat stress threshold, obtained by intersecting the computed grid with the Global Human Settlement Population layer (European Commission, GHSL Data Package 2023). 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 (Heat stress - Cities and 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