Air temperature, hot days, tropical nights and icing days - Cities in Greater Perth
Greater Perth: Air temperature, hot days, tropical nights and icing days - Cities was 1.33 Degrees celsius in 2025. ◆ Volatile
Air temperature, hot days, tropical nights and icing days - Cities in Greater Perth, 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 Greater Perth is 1.33 Degrees celsius, measured in 2025.
Compared with earlier readings it is down 3.3% on the previous year and up 72.6% over ten years.
Over the whole period, air temperature, hot days, tropical nights and icing days - cities in Greater Perth peaked at 1.38 Degrees celsius in 2024 and was at its lowest, -0.8278 Degrees celsius, in 1990.
Greater Perth ranks 491st of 1314 regions on this measure, in the middle of the range.
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 Greater Perth, year by year
| Year | Degrees celsius | Change |
|---|---|---|
| 1981 | -0.445 Degrees celsius | — |
| 1982 | -0.1844 Degrees celsius | -58.6% |
| 1983 | 0.3776 Degrees celsius | -304.7% |
| 1984 | -0.4034 Degrees celsius | -206.8% |
| 1985 | 0.3781 Degrees celsius | -193.7% |
| 1986 | -0.8005 Degrees celsius | -311.7% |
| 1987 | -0.0768 Degrees celsius | -90.4% |
| 1988 | 0.6613 Degrees celsius | -961.3% |
| 1989 | -0.1017 Degrees celsius | -115.4% |
| 1990 | -0.8278 Degrees celsius | +714.4% |
| 1991 | 0.0808 Degrees celsius | -109.8% |
| 1992 | -0.4303 Degrees celsius | -632.3% |
| 1993 | -0.474 Degrees celsius | +10.2% |
| 1994 | 0.4692 Degrees celsius | -199.0% |
| 1995 | 0.1051 Degrees celsius | -77.6% |
| 1996 | 0.3203 Degrees celsius | +204.8% |
| 1997 | 0.1962 Degrees celsius | -38.8% |
| 1998 | 0.2423 Degrees celsius | +23.5% |
| 1999 | 0.4238 Degrees celsius | +74.9% |
| 2000 | 0.21 Degrees celsius | -50.4% |
| 2001 | -0.4169 Degrees celsius | -298.5% |
| 2002 | 0.0665 Degrees celsius | -115.9% |
| 2003 | 0.2062 Degrees celsius | +210.2% |
| 2004 | 0.0197 Degrees celsius | -90.4% |
| 2005 | -0.7434 Degrees celsius | -3868.9% |
| 2006 | 0.2019 Degrees celsius | -127.2% |
| 2007 | -0.0718 Degrees celsius | -135.6% |
| 2008 | -0.057 Degrees celsius | -20.6% |
| 2009 | 0.435 Degrees celsius | -863.7% |
| 2010 | 0.6387 Degrees celsius | +46.8% |
| 2011 | 1.11 Degrees celsius | +73.7% |
| 2012 | 0.6339 Degrees celsius | -42.9% |
| 2013 | 0.7075 Degrees celsius | +11.6% |
| 2014 | 0.6771 Degrees celsius | -4.3% |
| 2015 | 0.7715 Degrees celsius | +13.9% |
| 2016 | -0.3756 Degrees celsius | -148.7% |
| 2017 | 0.2105 Degrees celsius | -156.0% |
| 2018 | 0.0163 Degrees celsius | -92.3% |
| 2019 | 0.6491 Degrees celsius | +3891.9% |
| 2020 | 0.5918 Degrees celsius | -8.8% |
| 2021 | 0.2304 Degrees celsius | -61.1% |
| 2022 | 0.2816 Degrees celsius | +22.2% |
| 2023 | 0.7585 Degrees celsius | +169.4% |
| 2024 | 1.38 Degrees celsius | +81.6% |
| 2025 | 1.33 Degrees celsius | -3.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -0.0661 Degrees celsius | -0.8005 Degrees celsius | 0.6613 Degrees celsius | 9 |
| 1990s | 0.0106 Degrees celsius | -0.8278 Degrees celsius | 0.4692 Degrees celsius | 10 |
| 2000s | -0.015 Degrees celsius | -0.7434 Degrees celsius | 0.435 Degrees celsius | 10 |
| 2010s | 0.5039 Degrees celsius | -0.3756 Degrees celsius | 1.11 Degrees celsius | 10 |
| 2020s | 0.7619 Degrees celsius | 0.2304 Degrees celsius | 1.38 Degrees celsius | 6 |
More climate change data for Greater Perth
- Air temperature, hot days, tropical nights and icing days - Cities 19.58 Degrees celsius (2025)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 20.77 Degrees celsius (2060)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 1.93 Degrees celsius (2060)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.01 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.62 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 2.7 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 2.62 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0.08 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 1.49 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions total 5.63 Tonnes of CO2-equivalent (2024)
Frequently asked questions
- What is air temperature, hot days, tropical nights and icing days - cities in Greater Perth?
- Air temperature, hot days, tropical nights and icing days - cities in Greater Perth was 1.33 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 Greater Perth?
- The highest recorded value was 1.38 Degrees celsius in 2024.
- What is the lowest air temperature, hot days, tropical nights and icing days - cities recorded in Greater Perth?
- The lowest recorded value was -0.8278 Degrees celsius in 1990.
- How does Greater Perth rank for air temperature, hot days, tropical nights and icing days - cities?
- Greater Perth ranks 491st out of 1314 regions with data for 2025.
- Is air temperature, hot days, tropical nights and icing days - cities rising or falling in Greater Perth?
- Over the last ten years it is up 72.6%. The long-run trend across the full record is volatile.
- Where does this Greater Perth 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