Air temperature, hot days, tropical nights and icing days - Cities in Greater Sydney
Greater Sydney: Air temperature, hot days, tropical nights and icing days - Cities was 1.6 Degrees celsius in 2025. ◆ Volatile
Air temperature, hot days, tropical nights and icing days - Cities in Greater Sydney, 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 Sydney is 1.6 Degrees celsius, measured in 2025. That is the highest value across all 45 years on record.
That represents a change of up 46.0% on the previous year and up 401.1% over ten years.
Over the whole period, air temperature, hot days, tropical nights and icing days - cities in Greater Sydney peaked at 1.6 Degrees celsius in 2025 and was at its lowest, -0.861 Degrees celsius, in 1992.
That places Greater Sydney 451st out of 1314 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.
Air temperature, hot days, tropical nights and icing days - Cities in Greater Sydney, year by year
| Year | Degrees celsius | Change |
|---|---|---|
| 1981 | 0.1276 Degrees celsius | — |
| 1982 | 0.0573 Degrees celsius | -55.1% |
| 1983 | 0.143 Degrees celsius | +149.6% |
| 1984 | -0.6892 Degrees celsius | -581.9% |
| 1985 | -0.4809 Degrees celsius | -30.2% |
| 1986 | -0.5661 Degrees celsius | +17.7% |
| 1987 | -0.3413 Degrees celsius | -39.7% |
| 1988 | 0.2999 Degrees celsius | -187.9% |
| 1989 | -0.2144 Degrees celsius | -171.5% |
| 1990 | -0.1497 Degrees celsius | -30.2% |
| 1991 | 0.3064 Degrees celsius | -304.6% |
| 1992 | -0.861 Degrees celsius | -381.0% |
| 1993 | -0.0181 Degrees celsius | -97.9% |
| 1994 | -0.0764 Degrees celsius | +321.7% |
| 1995 | -0.563 Degrees celsius | +637.0% |
| 1996 | -0.5185 Degrees celsius | -7.9% |
| 1997 | 0.2191 Degrees celsius | -142.3% |
| 1998 | 0.5058 Degrees celsius | +130.8% |
| 1999 | -0.2668 Degrees celsius | -152.8% |
| 2000 | -0.2346 Degrees celsius | -12.1% |
| 2001 | 0.1627 Degrees celsius | -169.4% |
| 2002 | 0.3753 Degrees celsius | +130.6% |
| 2003 | 0.0017 Degrees celsius | -99.5% |
| 2004 | 0.3973 Degrees celsius | +22657.4% |
| 2005 | 0.561 Degrees celsius | +41.2% |
| 2006 | 0.5004 Degrees celsius | -10.8% |
| 2007 | 0.4646 Degrees celsius | -7.1% |
| 2008 | -0.248 Degrees celsius | -153.4% |
| 2009 | 0.7632 Degrees celsius | -407.7% |
| 2010 | 0.3425 Degrees celsius | -55.1% |
| 2011 | 0.0581 Degrees celsius | -83.0% |
| 2012 | -0.1111 Degrees celsius | -291.2% |
| 2013 | 0.6347 Degrees celsius | -671.2% |
| 2014 | 0.6422 Degrees celsius | +1.2% |
| 2015 | 0.3184 Degrees celsius | -50.4% |
| 2016 | 0.9551 Degrees celsius | +200.0% |
| 2017 | 0.9791 Degrees celsius | +2.5% |
| 2018 | 0.9255 Degrees celsius | -5.5% |
| 2019 | 1.32 Degrees celsius | +42.4% |
| 2020 | 0.4736 Degrees celsius | -64.1% |
| 2021 | -0.1102 Degrees celsius | -123.3% |
| 2022 | -0.1662 Degrees celsius | +50.9% |
| 2023 | 0.7623 Degrees celsius | -558.6% |
| 2024 | 1.09 Degrees celsius | +43.4% |
| 2025 | 1.6 Degrees celsius | +46.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -0.1849 Degrees celsius | -0.6892 Degrees celsius | 0.2999 Degrees celsius | 9 |
| 1990s | -0.1422 Degrees celsius | -0.861 Degrees celsius | 0.5058 Degrees celsius | 10 |
| 2000s | 0.2744 Degrees celsius | -0.248 Degrees celsius | 0.7632 Degrees celsius | 10 |
| 2010s | 0.6062 Degrees celsius | -0.1111 Degrees celsius | 1.32 Degrees celsius | 10 |
| 2020s | 0.608 Degrees celsius | -0.1662 Degrees celsius | 1.6 Degrees celsius | 6 |
More climate change data for Greater Sydney
- Air temperature, hot days, tropical nights and icing days - Cities 18.18 Degrees celsius (2025)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 19.69 Degrees celsius (2060)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 2.05 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 1.94 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 3.78 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 3.61 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0.35 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 2.55 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions total 11.41 Tonnes of CO2-equivalent (2024)
Frequently asked questions
- What is air temperature, hot days, tropical nights and icing days - cities in Greater Sydney?
- Air temperature, hot days, tropical nights and icing days - cities in Greater Sydney was 1.6 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 Sydney?
- The highest recorded value was 1.6 Degrees celsius in 2025.
- What is the lowest air temperature, hot days, tropical nights and icing days - cities recorded in Greater Sydney?
- The lowest recorded value was -0.861 Degrees celsius in 1992.
- How does Greater Sydney rank for air temperature, hot days, tropical nights and icing days - cities?
- Greater Sydney ranks 451st out of 1314 regions with data for 2025.
- Is air temperature, hot days, tropical nights and icing days - cities rising or falling in Greater Sydney?
- Over the last ten years it is up 401.1%. The long-run trend across the full record is volatile.
- Where does this Greater Sydney 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