Precipitation - Cities and FUAs — Extreme precipitation days in Tokyo
Tokyo: Precipitation - Cities and FUAs — Extreme precipitation days was 33.02 Days per year in 2024. ▲ Rising
Precipitation - Cities and FUAs — Extreme precipitation days in Tokyo, 1981–2024
Source: Organisation for Economic Co-operation and Development. Measured in Days per year.
Analysis
In 2024, precipitation - cities and fuas — extreme precipitation days in Tokyo stood at 33.02 Days per year. That is the highest value across all 44 years on record.
That represents a change of up 96.5% on the previous year and up 64.6% over ten years.
Over the whole period, precipitation - cities and fuas — extreme precipitation days in Tokyo peaked at 33.02 Days per year in 2024 and was at its lowest, 15.16 Days per year, in 1997.
That places Tokyo 52nd out of 1323 regions with data for 2024, putting it in the top 10%.
The long-run direction has been consistently rising across the 44 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 22.1 Days per year | 16.57 Days per year | 25.59 Days per year | 9 |
| 1990s | 21.74 Days per year | 15.16 Days per year | 31.45 Days per year | 10 |
| 2000s | 22.44 Days per year | 17.75 Days per year | 26.3 Days per year | 10 |
| 2010s | 23.02 Days per year | 15.7 Days per year | 32.01 Days per year | 10 |
| 2020s | 25.11 Days per year | 16.81 Days per year | 33.02 Days per year | 5 |
More reference data data for Tokyo
- Cooling and heating degree days - Cities and FUAs — Cooling degree 475.51 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 220.74 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs 1,257 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -260.88 Degree days (2025)
- Precipitation - Cities and FUAs — Change in extreme precipitation 10.6 Days per year (2024)
- Dependency ratio - Cities and FUAs 39 Percentage of population aged 15-64 years (2020)
- Wind threats - Cities and FUAs — Exposure to wind threats 15.71 Percentage of area (2023)
- Coastal flooding - Cities and FUAs — Built-up area exposure to 0.0589 Percentage of built-up area (2022)
- Internet speed - Cities and FUAs — Downloading speed 6 Percentage of national value (2025)
- Internet speed - Cities and FUAs — Uploading speed 6.7 Percentage of national value (2025)
Frequently asked questions
- What is precipitation - cities and fuas — extreme precipitation days in Tokyo?
- Precipitation - cities and fuas — extreme precipitation days in Tokyo was 33.02 Days per year in 2024, according to Organisation for Economic Co-operation and Development.
- What is the highest precipitation - cities and fuas — extreme precipitation days recorded in Tokyo?
- The highest recorded value was 33.02 Days per year in 2024.
- What is the lowest precipitation - cities and fuas — extreme precipitation days recorded in Tokyo?
- The lowest recorded value was 15.16 Days per year in 1997.
- How does Tokyo rank for precipitation - cities and fuas — extreme precipitation days?
- Tokyo ranks 52nd out of 1323 regions with data for 2024.
- Is precipitation - cities and fuas — extreme precipitation days rising or falling in Tokyo?
- Over the last ten years it is up 64.6%. The long-run trend across the full record is rising.
- Where does this Tokyo data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Precipitation - Cities and FUAs — Extreme precipitation days. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 44 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
<p align="justify">This dataset provides indicators of total precipitation and extreme precipitation days in Functional Urban Areas (FUAs) and cities.</p> <h3>Data sources and methodology</h3> <p align="justify">The indicators use <a href="https://developers.google.com/earth-engine/datasets/catalog/ECMWF_ERA5_LAND_DAILY_AGGR">ERA5-Land</a> data. Total precipitation is the sum of all liquid and frozen water—such as rain and snow—that reaches the Earth's surface each year. It excludes fog, dew, and any precipitation that evaporates before reaching the ground. Extreme precipitation days are defined as days with more than 20 mm of total precipitation. 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. </p> <p align="justify"> 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. </p> <h3>Defining FUAs and cities</h3> <p align="justify">The OECD, in cooperation with the EU, has developed a harmonised <a href="https://www.oecd.org/en/data/datasets/oecd-definition-of-cities-and-functional-urban-areas.html">definition of functional urban areas</a> (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns <a href=https://doi.org/10.1787/9789264174108-en>(OECD, 2012)</a>. FUAs consist of: <ol> <li><b>A city</b> – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city.</li> <li><b>A commuting zone</b> – including all local areas where at least 15% of employed residents work in the city.</li> </ol> The delineation process includes: <ul> <li>Assigning municipalities surrounded by a single FUA to that FUA.</li> <li>Excluding non-contiguous municipalities.</li> </ul> The correspondence table between SAUs and FUAs/cities is available in <a href=https://webfs-cfe.oecd.org/files/.Stat/cities_local_areas/fua_cities_sau_mapping.parquet>parquet </a> and <a href=https://webfs-cfe.oecd.org/files/.Stat/cities_local_areas/fua_cities_sau_mapping.csv>csv</a> format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries.</p> <h3>Cite this dataset</h3> <p>OECD Regions, cities and local areas database (<a href="http://data-explorer.oecd.org/s/1d6">Precipitations - FUAs</a>), <a href=http://oe.cd/geostats>http://oe.cd/geostats</a></p> <h3>Further information</h3> <ul> <li> <a href=https://localdataportal.oecd.org/>OECD Local Data Portal </a> </li> <li> <a href=https://www.oecd.org/en/publications/oecd-regions-and-cities-at-a-glance-2024_f42db3bf-en.html/>OECD Regions and Cities at a Glance </a> </li> </ul> <p align="justify">For questions and/or comments, please email <a href="mailto:CitiesStat@oecd.org">CitiesStat@oecd.org</a>