Air temperature, hot days, tropical nights and icing days - Cities in Halifax
Halifax: Air temperature, hot days, tropical nights and icing days - Cities was 3.11 Degrees celsius in 2025. ◆ Volatile
Air temperature, hot days, tropical nights and icing days - Cities in Halifax, 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 Halifax is 3.11 Degrees celsius, measured in 2025. That is the highest value across all 45 years on record.
That represents a change of up 94.1% on the previous year and up 2,916.3% over ten years.
Over the whole period, air temperature, hot days, tropical nights and icing days - cities in Halifax peaked at 3.11 Degrees celsius in 2025 and was at its lowest, -1.08 Degrees celsius, in 1985.
Halifax ranks 220th of 1314 regions on this measure, in the top quarter.
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 Halifax, year by year
| Year | Degrees celsius | Change |
|---|---|---|
| 1981 | 0.3423 Degrees celsius | — |
| 1982 | -0.4514 Degrees celsius | -231.9% |
| 1983 | 0.655 Degrees celsius | -245.1% |
| 1984 | 0.554 Degrees celsius | -15.4% |
| 1985 | -1.08 Degrees celsius | -295.6% |
| 1986 | -0.9085 Degrees celsius | -16.2% |
| 1987 | -0.6878 Degrees celsius | -24.3% |
| 1988 | -0.2655 Degrees celsius | -61.4% |
| 1989 | -0.6653 Degrees celsius | +150.6% |
| 1990 | 0.6729 Degrees celsius | -201.1% |
| 1991 | 0.4085 Degrees celsius | -39.3% |
| 1992 | -0.9751 Degrees celsius | -338.7% |
| 1993 | -0.7332 Degrees celsius | -24.8% |
| 1994 | -0.1639 Degrees celsius | -77.6% |
| 1995 | -0.0289 Degrees celsius | -82.4% |
| 1996 | -0.1551 Degrees celsius | +437.5% |
| 1997 | -0.9435 Degrees celsius | +508.3% |
| 1998 | 0.557 Degrees celsius | -159.0% |
| 1999 | 1.43 Degrees celsius | +157.2% |
| 2000 | 0.3669 Degrees celsius | -74.4% |
| 2001 | 0.3365 Degrees celsius | -8.3% |
| 2002 | -0.0955 Degrees celsius | -128.4% |
| 2003 | -0.2455 Degrees celsius | +156.9% |
| 2004 | -0.7526 Degrees celsius | +206.6% |
| 2005 | 0.1837 Degrees celsius | -124.4% |
| 2006 | 1.17 Degrees celsius | +538.4% |
| 2007 | -0.4755 Degrees celsius | -140.5% |
| 2008 | 0.5277 Degrees celsius | -211.0% |
| 2009 | -0.0181 Degrees celsius | -103.4% |
| 2010 | 1.44 Degrees celsius | -8057.4% |
| 2011 | 0.7965 Degrees celsius | -44.7% |
| 2012 | 1.54 Degrees celsius | +93.2% |
| 2013 | 0.3797 Degrees celsius | -75.3% |
| 2014 | 0.4697 Degrees celsius | +23.7% |
| 2015 | -0.1106 Degrees celsius | -123.5% |
| 2016 | 0.7823 Degrees celsius | -807.4% |
| 2017 | 0.8527 Degrees celsius | +9.0% |
| 2018 | 0.6642 Degrees celsius | -22.1% |
| 2019 | -0.0643 Degrees celsius | -109.7% |
| 2020 | 1.25 Degrees celsius | -2043.2% |
| 2021 | 1.56 Degrees celsius | +24.5% |
| 2022 | 1.58 Degrees celsius | +1.5% |
| 2023 | 1.4 Degrees celsius | -11.1% |
| 2024 | 1.6 Degrees celsius | +14.3% |
| 2025 | 3.11 Degrees celsius | +94.1% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -0.279 Degrees celsius | -1.08 Degrees celsius | 0.655 Degrees celsius | 9 |
| 1990s | 0.0071 Degrees celsius | -0.9751 Degrees celsius | 1.43 Degrees celsius | 10 |
| 2000s | 0.1 Degrees celsius | -0.7526 Degrees celsius | 1.17 Degrees celsius | 10 |
| 2010s | 0.6749 Degrees celsius | -0.1106 Degrees celsius | 1.54 Degrees celsius | 10 |
| 2020s | 1.75 Degrees celsius | 1.25 Degrees celsius | 3.11 Degrees celsius | 6 |
More climate change data for Halifax
- Air temperature, hot days, tropical nights and icing days - Cities 9.83 Degrees celsius (2025)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 10.22 Degrees celsius (2060)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 2.8 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 0.84 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 1.4 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 1.31 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0.39 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 0.92 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions total 3.79 Tonnes of CO2-equivalent (2024)
Frequently asked questions
- What is air temperature, hot days, tropical nights and icing days - cities in Halifax?
- Air temperature, hot days, tropical nights and icing days - cities in Halifax was 3.11 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 Halifax?
- The highest recorded value was 3.11 Degrees celsius in 2025.
- What is the lowest air temperature, hot days, tropical nights and icing days - cities recorded in Halifax?
- The lowest recorded value was -1.08 Degrees celsius in 1985.
- How does Halifax rank for air temperature, hot days, tropical nights and icing days - cities?
- Halifax ranks 220th out of 1314 regions with data for 2025.
- Is air temperature, hot days, tropical nights and icing days - cities rising or falling in Halifax?
- Over the last ten years it is up 2,916.3%. The long-run trend across the full record is volatile.
- Where does this Halifax 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