Air temperature, hot days, tropical nights and icing days - Cities in Oslo
Oslo: Air temperature, hot days, tropical nights and icing days - Cities was 2.19 Degrees celsius in 2025. ▲ Rising
Air temperature, hot days, tropical nights and icing days - Cities in Oslo, 1981–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degrees celsius.
Analysis
Oslo recorded 2.19 Degrees celsius for air temperature, hot days, tropical nights and icing days - cities in 2025.
Compared with earlier readings it is down 38.0% on the previous year and down 37.0% over ten years.
Over the whole period, air temperature, hot days, tropical nights and icing days - cities in Oslo peaked at 4.44 Degrees celsius in 2020 and was at its lowest, 0.0206 Degrees celsius, in 1985.
Oslo ranks 1312th of 1314 regions on this measure, in the bottom quarter.
The long-run direction has been consistently rising across the 45 years of available data.
Air temperature, hot days, tropical nights and icing days - Cities in Oslo, year by year
| Year | Degrees celsius | Change |
|---|---|---|
| 1981 | 0.6651 Degrees celsius | — |
| 1982 | 2.02 Degrees celsius | +203.0% |
| 1983 | 2.74 Degrees celsius | +35.9% |
| 1984 | 2.3 Degrees celsius | -16.0% |
| 1985 | 0.0206 Degrees celsius | -99.1% |
| 1986 | 1.12 Degrees celsius | +5324.3% |
| 1987 | 0.3416 Degrees celsius | -69.5% |
| 1988 | 2.42 Degrees celsius | +609.6% |
| 1989 | 3.53 Degrees celsius | +45.5% |
| 1990 | 3.57 Degrees celsius | +1.2% |
| 1991 | 2.4 Degrees celsius | -32.9% |
| 1992 | 2.8 Degrees celsius | +16.9% |
| 1993 | 1.84 Degrees celsius | -34.3% |
| 1994 | 1.83 Degrees celsius | -0.7% |
| 1995 | 2.17 Degrees celsius | +18.5% |
| 1996 | 0.8472 Degrees celsius | -60.9% |
| 1997 | 2.79 Degrees celsius | +229.5% |
| 1998 | 1.94 Degrees celsius | -30.6% |
| 1999 | 2.68 Degrees celsius | +38.2% |
| 2000 | 3.5 Degrees celsius | +30.7% |
| 2001 | 1.62 Degrees celsius | -53.6% |
| 2002 | 2.67 Degrees celsius | +64.3% |
| 2003 | 2.76 Degrees celsius | +3.5% |
| 2004 | 2.85 Degrees celsius | +3.3% |
| 2005 | 3.34 Degrees celsius | +17.1% |
| 2006 | 3.46 Degrees celsius | +3.8% |
| 2007 | 2.93 Degrees celsius | -15.4% |
| 2008 | 3.22 Degrees celsius | +10.0% |
| 2009 | 2.35 Degrees celsius | -27.0% |
| 2010 | 0.2018 Degrees celsius | -91.4% |
| 2011 | 3.07 Degrees celsius | +1420.3% |
| 2012 | 1.98 Degrees celsius | -35.6% |
| 2013 | 2.38 Degrees celsius | +20.5% |
| 2014 | 4.3 Degrees celsius | +80.5% |
| 2015 | 3.48 Degrees celsius | -19.1% |
| 2016 | 3.09 Degrees celsius | -11.0% |
| 2017 | 2.74 Degrees celsius | -11.4% |
| 2018 | 3.46 Degrees celsius | +26.1% |
| 2019 | 3.08 Degrees celsius | -11.1% |
| 2020 | 4.44 Degrees celsius | +44.4% |
| 2021 | 2.72 Degrees celsius | -38.8% |
| 2022 | 3.48 Degrees celsius | +27.9% |
| 2023 | 2.5 Degrees celsius | -28.0% |
| 2024 | 3.53 Degrees celsius | +41.2% |
| 2025 | 2.19 Degrees celsius | -38.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 1.68 Degrees celsius | 0.0206 Degrees celsius | 3.53 Degrees celsius | 9 |
| 1990s | 2.29 Degrees celsius | 0.8472 Degrees celsius | 3.57 Degrees celsius | 10 |
| 2000s | 2.87 Degrees celsius | 1.62 Degrees celsius | 3.5 Degrees celsius | 10 |
| 2010s | 2.78 Degrees celsius | 0.2018 Degrees celsius | 4.3 Degrees celsius | 10 |
| 2020s | 3.14 Degrees celsius | 2.19 Degrees celsius | 4.44 Degrees celsius | 6 |
More climate change data for Oslo
- Air temperature, hot days, tropical nights and icing days - Cities -0.0379 Degrees celsius (2025)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 6.3 Degrees celsius (2060)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 1.4 Degrees celsius (2060)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.03 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.2 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.95 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.91 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 0.14 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions total 1.99 Tonnes of CO2-equivalent (2024)
Frequently asked questions
- What is air temperature, hot days, tropical nights and icing days - cities in Oslo?
- Air temperature, hot days, tropical nights and icing days - cities in Oslo was 2.19 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 Oslo?
- The highest recorded value was 4.44 Degrees celsius in 2020.
- What is the lowest air temperature, hot days, tropical nights and icing days - cities recorded in Oslo?
- The lowest recorded value was 0.0206 Degrees celsius in 1985.
- How does Oslo rank for air temperature, hot days, tropical nights and icing days - cities?
- Oslo ranks 1312th out of 1314 regions with data for 2025.
- Is air temperature, hot days, tropical nights and icing days - cities rising or falling in Oslo?
- Over the last ten years it is down 37.0%. The long-run trend across the full record is rising.
- Where does this Oslo 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 — Air temperature at 2 meters. 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