Dataset · ECMWF
Days Above 35°C
76 years, 1950–2025 · 222 countries
This counts the days in a year when the temperature climbed above 35°C, averaged over a country’s land, from a reconstruction of the world’s weather since 1950. Heat at that level strains bodies, crops, power grids and outdoor work, so it is a plain measure of how much dangerous heat a country is exposed to.
This site holds every year from 1950 to 2025, read from ECMWF’s own data and stored exactly as published.
Days Above 35°C · the file
- Newest
- Days Above 35°C, 2025
- Held
- 76 years · 16,872 rows
- Licence
- CC BY 4.0
0176 years
Every year
Newest first. Each opens the full table for that year, and each downloads as a CSV.
| Year | Countries | Change | Read | Download |
|---|---|---|---|---|
| Days Above 35°C, 2025Newest | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2024 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2023 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2022 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2021 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2020 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2019 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2018 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2017 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2016 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2015 | 222 | ±0 | October 3, 2026 | CSV |
| Days Above 35°C, 2014 | 222 | ±0 | October 3, 2026 | CSV |
Show all 76 years
Every year in one file, one row per country per year: hot-days-35c-all-editions-nations-inquiry.csv
023 columns
What’s in the file
Every column, what it holds, how it is stored and what its values look like — what a reader needs before opening the file.
| Column | What it holds | Stored as | Range, 2025 | Distinct | Empty | Spread |
|---|---|---|---|---|---|---|
CountrycountryName | The country’s name, as this file spells it. | Text | — | 222 | 0 | |
ISO Codecountry_codeIdentifier | The ISO 3166-1 alpha-3 code, added by this site. Every table here joins on it. | Text · 3 letters | — | 222 | 0 | |
Days with maximum temperature above 35°Chot_days_35cHeadline | The headline figure: Days a year with a maximum temperature above 35°C, averaged over the country’s land. | Number · up to 2 decimals | 0.0071 share it222.89 Malimiddle 3.48 | 147 | 0 |
Profiled from the newest file. Range: the lowest and highest value, with the country holding it when only one does. Spread: countries in ten equal steps from lowest to highest. A higher value is the worse result.
03222 countries across every year
Who is covered
How many countries each year holds, continent by continent, who joined and who left, and which places this site covers that the dataset never has.
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Africa | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 |
| Americas | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 |
| Asia | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 |
| Europe | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 |
| Oceania | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| All | 222 | 222 | 222 | 222 | 222 | 222 | 222 | 222 | 222 | 222 | 222 | 222 |
The newest 12 of 76 years.
The same 222 countries in every year.
Not in this dataset · 3 places this site covers
ECMWF gives no figure for these in any year held here. It is the publisher’s choice of scope, and each place’s profile shows what is measured.
04Provenance
Where it comes from
The path from the publisher to this page, and what was checked and changed on the way.
1 · Publisher
World Bank Group (Climate Change Knowledge Portal), from Copernicus ERA5 (ECMWF)
2 · Their file
Days above 35°C, 2025 (CCKP, ERA5 0.25°)
3 · Read by this site
October 3, 2026
Imported by a script that parses each figure and writes it down unrounded.4 · Stored as
76 files, one per year
Each downloads as a CSV, or every year together as hot-days-35c-all-editions-nations-inquiry.csv5 · Used on
Its statistic page, and every profile it measures
Precision
The headline is stored to 2 decimals, as published.
Rounded by this site
Never. Tables on screen may show fewer decimals; the files never do.
Changed by this site
Reshaped into one row per country: regional and income-group totals are left out, only the columns listed are kept, each row gets its ISO 3166 code, and some country names are brought to one spelling. No value is recalculated, rescaled or rounded.
The World Bank’s Climate Change Knowledge Portal, which averages the Copernicus ERA5 reanalysis over national borders and publishes the result to two decimals. Contains modified Copernicus Climate Change Service information.
05Reuse
Licence and credit
What the publisher’s licence lets you do, what it asks of you, and a credit line and citation ready to copy.
Licence · checked October 3, 2026
- Share and redistribute it
- Adapt it and build on it
- Use it commercially
- Credit the publisher
- Say what you changed
Share, adapt and use commercially. Credit the publisher and say if you changed anything.
A credit line
Source: World Bank Group (Climate Change Knowledge Portal), from Copernicus ERA5 (ECMWF), Days Above 35°C, via Nations Inquiry.
Cite this dataset
World Bank Group (Climate Change Knowledge Portal), from Copernicus ERA5 (ECMWF). Days Above 35°C, 1950–2025 [data set]. As held by Nations Inquiry, https://nationsinquiry.com/datasets/hot-days-35c
The publisher’s own citation: World Bank. Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-degree. Washington, DC: World Bank Group. Contains modified Copernicus Climate Change Service information; Hersbach, H. et al. 2020. “The ERA5 global reanalysis.” Quarterly Journal of the Royal Meteorological Society 146: 1999–2049.
Plain-language summary, not legal advice. The licence text is what binds.
06Where it is used
Around the site
Where these numbers appear on this site, and the datasets nearest to it.
Charted
Days Above 35°C by countryWho is highest, the map, the spread, who rose and fell, and the records.
Subjects
Near neighbours
- Climate Vulnerability (ND-GAIN)ND-GAIN · 30 held · 1995–2024
- World Risk IndexIFHV · 26 held · 2000–2025
- INFORM Risk IndexEuropean Commission Joint Research Centre · 10 held · 2017–2026
07Questions
Days Above 35°C: questions and answers
What is the Days Above 35°C?
This counts the days in a year when the temperature climbed above 35°C, averaged over a country’s land, from a reconstruction of the world’s weather since 1950. Heat at that level strains bodies, crops, power grids and outdoor work, so it is a plain measure of how much dangerous heat a country is exposed to.
Which years of the Days Above 35°C can I download?
All 76, from 1950 to 2025, each as a CSV file, or every year together in one CSV.
Does ECMWF rank countries on it?
No, and this site does not order it either. The files hold values only.
Can I use it commercially?
Yes, under CC BY 4.0, with credit to ECMWF. The licence text is linked on this page.