Air temperature, hot days, tropical nights and icing days - Cities in Bonn
Bonn: Air temperature, hot days, tropical nights and icing days - Cities was 0.1412 Degrees celsius in 2025. ◆ Volatile
Air temperature, hot days, tropical nights and icing days - Cities in Bonn, 1981–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degrees celsius.
Analysis
Bonn recorded 0.1412 Degrees celsius for air temperature, hot days, tropical nights and icing days - cities in 2025.
The figure is down 92.0% on the previous year and down 84.1% over ten years.
Over the whole period, air temperature, hot days, tropical nights and icing days - cities in Bonn peaked at 1.94 Degrees celsius in 2020 and was at its lowest, -1.63 Degrees celsius, in 1985.
That places Bonn 739th 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 Bonn, year by year
| Year | Degrees celsius | Change |
|---|---|---|
| 1981 | -0.7992 Degrees celsius | — |
| 1982 | 0.0348 Degrees celsius | -104.4% |
| 1983 | 0.0053 Degrees celsius | -84.8% |
| 1984 | -0.863 Degrees celsius | -16455.9% |
| 1985 | -1.63 Degrees celsius | +88.5% |
| 1986 | -1.04 Degrees celsius | -36.1% |
| 1987 | -1.38 Degrees celsius | +32.6% |
| 1988 | 0.3633 Degrees celsius | -126.4% |
| 1989 | 0.7628 Degrees celsius | +110.0% |
| 1990 | 0.7018 Degrees celsius | -8.0% |
| 1991 | -0.4719 Degrees celsius | -167.2% |
| 1992 | 0.375 Degrees celsius | -179.5% |
| 1993 | -0.38 Degrees celsius | -201.3% |
| 1994 | 0.8008 Degrees celsius | -310.8% |
| 1995 | 0.3964 Degrees celsius | -50.5% |
| 1996 | -1.61 Degrees celsius | -505.5% |
| 1997 | -0.0386 Degrees celsius | -97.6% |
| 1998 | -0.035 Degrees celsius | -9.3% |
| 1999 | 0.6615 Degrees celsius | -1991.0% |
| 2000 | 0.7935 Degrees celsius | +20.0% |
| 2001 | 0.1835 Degrees celsius | -76.9% |
| 2002 | 0.7285 Degrees celsius | +296.9% |
| 2003 | 0.6807 Degrees celsius | -6.6% |
| 2004 | 0.0445 Degrees celsius | -93.5% |
| 2005 | 0.3994 Degrees celsius | +798.1% |
| 2006 | 0.8522 Degrees celsius | +113.4% |
| 2007 | 0.8612 Degrees celsius | +1.1% |
| 2008 | 0.2781 Degrees celsius | -67.7% |
| 2009 | 0.3039 Degrees celsius | +9.3% |
| 2010 | -0.9881 Degrees celsius | -425.2% |
| 2011 | 1.01 Degrees celsius | -202.2% |
| 2012 | 0.2403 Degrees celsius | -76.2% |
| 2013 | -0.2382 Degrees celsius | -199.1% |
| 2014 | 1.48 Degrees celsius | -721.0% |
| 2015 | 0.886 Degrees celsius | -40.1% |
| 2016 | 0.6525 Degrees celsius | -26.4% |
| 2017 | 0.9171 Degrees celsius | +40.5% |
| 2018 | 1.83 Degrees celsius | +99.4% |
| 2019 | 1.38 Degrees celsius | -24.3% |
| 2020 | 1.94 Degrees celsius | +40.1% |
| 2021 | 0.2024 Degrees celsius | -89.6% |
| 2022 | 1.88 Degrees celsius | +828.3% |
| 2023 | 1.78 Degrees celsius | -5.4% |
| 2024 | 1.77 Degrees celsius | -0.6% |
| 2025 | 0.1412 Degrees celsius | -92.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -0.5044 Degrees celsius | -1.63 Degrees celsius | 0.7628 Degrees celsius | 9 |
| 1990s | 0.0403 Degrees celsius | -1.61 Degrees celsius | 0.8008 Degrees celsius | 10 |
| 2000s | 0.5125 Degrees celsius | 0.0445 Degrees celsius | 0.8612 Degrees celsius | 10 |
| 2010s | 0.7173 Degrees celsius | -0.9881 Degrees celsius | 1.83 Degrees celsius | 10 |
| 2020s | 1.28 Degrees celsius | 0.1412 Degrees celsius | 1.94 Degrees celsius | 6 |
More climate change data for Bonn
- Air temperature, hot days, tropical nights and icing days - Cities 9.89 Degrees celsius (2025)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 12.15 Degrees celsius (2060)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 1.54 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 0.31 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.11 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.1 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0.2 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 0.18 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions total 0.82 Tonnes of CO2-equivalent (2024)
Frequently asked questions
- What is air temperature, hot days, tropical nights and icing days - cities in Bonn?
- Air temperature, hot days, tropical nights and icing days - cities in Bonn was 0.1412 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 Bonn?
- The highest recorded value was 1.94 Degrees celsius in 2020.
- What is the lowest air temperature, hot days, tropical nights and icing days - cities recorded in Bonn?
- The lowest recorded value was -1.63 Degrees celsius in 1985.
- How does Bonn rank for air temperature, hot days, tropical nights and icing days - cities?
- Bonn ranks 739th out of 1314 regions with data for 2025.
- Is air temperature, hot days, tropical nights and icing days - cities rising or falling in Bonn?
- Over the last ten years it is down 84.1%. The long-run trend across the full record is volatile.
- Where does this Bonn 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