Data

Temperature of the hottest day of the year by country, projected for 20-year windows to 2099 (CMIP6, World Bank CCKP)

Name: Temperature of the hottest day of the year by country, projected for 20-year windows to 2099 (CMIP6, World Bank CCKP)
License: https://www.worldbank.org/ext/en/legal/terms-conditions/datasets

Temperature of the hottest day of the year, 1995–2014 as the models simulate it and projected for 2020–2039, 2040–2059, 2060–2079 and 2080–2099 under low, middle and very high emissions, for every country and territory, from the CMIP6 climate models as bias-corrected, downscaled and aggregated by the World Bank's Climate Change Knowledge Portal. Each value is averaged over the land of the place, not weighted by where people live. The value is the median of the models and the range runs from the 10th to the 90th percentile of the models. The 1995–2014 values are the models' simulation of the recent past, not observations.

Latest value

43.9°C

Each country or territory as drawn by the World Bank's official boundaries: the area-weighted mean of the 0.25° grid cells inside it, averaged over the land, not weighted by where people live. No world value., 2080–2099 (projection). Version cmip6-x0.25 txx climatology, fetched 2026-10-16.

Temperature of the hottest day of the year by country, projected for 20-year windows to 2099 (CMIP6, World Bank CCKP) (degrees Celsius on the hottest day of the year)

13 values from 1995–2014 to 2080–2099. Lines: Model simulation of 1995–2014, not observations, SSP1-2.6, low emissions, SSP2-4.5, middle emissions, SSP5-8.5, very high emissions. The shaded band is the uncertainty range the producer gives.

Show as a table

Temperature of the hottest day of the year by country, projected for 20-year windows to 2099 (CMIP6, World Bank CCKP), every value
Period	Emissions scenario	Value (°C)	Range	Status
1995/2014	Model simulation of 1995–2014, not observations	41.6	40.8 to 42.2	final
2020/2039	SSP1-2.6, low emissions	42.3	41.3 to 43.3	projection
2040/2059	SSP1-2.6, low emissions	42.7	41.7 to 43.8	projection
2060/2079	SSP1-2.6, low emissions	42.9	41.8 to 44.0	projection
2080/2099	SSP1-2.6, low emissions	42.9	41.8 to 44.1	projection
2020/2039	SSP2-4.5, middle emissions	42.1	41.2 to 43.2	projection
2040/2059	SSP2-4.5, middle emissions	42.9	41.8 to 44.1	projection
2060/2079	SSP2-4.5, middle emissions	43.5	42.3 to 44.7	projection
2080/2099	SSP2-4.5, middle emissions	43.9	42.5 to 45.3	projection
2020/2039	SSP5-8.5, very high emissions	42.2	41.2 to 43.3	projection
2040/2059	SSP5-8.5, very high emissions	43.4	42.2 to 44.8	projection
2060/2079	SSP5-8.5, very high emissions	44.7	43.2 to 46.4	projection
2080/2099	SSP5-8.5, very high emissions	46.1	44.2 to 48.0	projection

The World Bank: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree (doi:10.57966/128g-6s70): Copernicus Climate Change Service ERA5. The World Bank: Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree (doi:10.57966/b54h-7s87): CMIP6 multi-model ensemble (World Climate Research Programme). CC BY 4.0 with the World Bank Dataset Terms.

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File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2080-2099_median_ssp245_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,652 bytes
Fingerprint: sha256 b94de15def7b9ed4e375a2f54d695818590e3bef26bbac1d3385e3c7ea5cdb38
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2080-2099_p10_ssp245_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,685 bytes
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Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2080-2099_p90_ssp245_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,702 bytes
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
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Producer: World Bank Group · Climate Change Knowledge Portal country climate data
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Fetched: 2026-10-16 (automatically), 115,723 bytes
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
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File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2020-2039_p90_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
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Fingerprint: sha256 abed62652b76ebec5828f772d2d49a353f097312b87615c2c05ac70884661bc3
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2040-2059_median_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,732 bytes
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2040-2059_p10_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,721 bytes
Fingerprint: sha256 918144655c5de8f0cea1ac4db8c493feaee52b1026f44298474d346f1bb58bdc
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2040-2059_p90_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,741 bytes
Fingerprint: sha256 975c92174f89e9bb753239ffa0dba39db15378196771a997732d35cf435063a9
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2060-2079_median_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,730 bytes
Fingerprint: sha256 fdbf83a3ddc1f0723e82b33132da6761292fa407a0da084b51a4b5a09afc22b1
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2060-2079_p10_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,708 bytes
Fingerprint: sha256 334bcbc33fe264482b7715fff2d0a9b9096955560a9787cf0da9b5cd8aa5df86
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2060-2079_p90_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,678 bytes
Fingerprint: sha256 34e7090a97bbb99efd996e284c5d7919e67112532f6b2029597310d2207b3e60
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2080-2099_median_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,701 bytes
Fingerprint: sha256 4515cf3da62b2c7c6dbb43fc569a9857b7212cc017a370ddcbae8acea66f5f19
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2080-2099_p10_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,703 bytes
Fingerprint: sha256 3ac26850ab6396e55f8df7ff4690c4328c447cf1ea66879174f368fcd1319fca
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

Producer: World Bank Group · Climate Change Knowledge Portal country climate data
Version: cmip6-x0.25 txx climatology, fetched 2026-10-16
File: https://cckpapi.worldbank.org/cckp/v1/cmip6-x0.25_climatology_txx_climatology_annual_2080-2099_p90_ssp585_ensemble_all_mean/all_countries_subnationals?_format=json
Fetched: 2026-10-16 (automatically), 115,736 bytes
Fingerprint: sha256 dce8985347fdf5b0cc0aa22533900607f8a500e1ac9a24ffffbad1e7dd3967c8
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Cite the producer: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87

What was done to it

Read CCKP's 39 CMIP6 0.25° all_countries_subnationals files of txx (climatology): the multi-model ensemble median, 10th and 90th percentiles for the 1995–2014 historical runs and 2020–2039, 2040–2059, 2060–2079 and 2080–2099 under SSP1-2.6, SSP2-4.5 and SSP5-8.5. Every file holds the same 246 countries and 3,528 regions.
Code: pipeline/src/envdash/transforms/future/cckp_projections.py · code sha256 5c4361ac9b2983cd… · inputs cf36c862f95c… 4b166b083522… 4d273e51a4f0… f86f049fc2fa… 396f4ffc3573… 4c9463e33793… 5e30ed390451… 4a5b5c51cc0c… 4af2e2cd26aa… fc3a0eecb0b8… 1404b47bde39… d8b199027f65… 7c9e063d4635… 938c46c22d28… cddb43f61d9d… 63dda8a68ed2… ce6b747fdb2e… 43a2a9d0b59b… c1d7b294d610… 55950b3defa6… 0fc2ade15bba… 5a2963241ba0… e532ddf29308… 3b4d376e7504… b94de15def7b… 28fcd0e7b0c3… 6e6f7f2e9cf8… b31a1fd23b6a… bfc9f783afb8… abed62652b76… b494949f953a… 918144655c5d… 975c92174f89… fdbf83a3ddc1… 334bcbc33fe2… 34e7090a97bb… 4515cf3da62b… 3ac26850ab63… dce8985347fd…
Checked every country's value against its own regions' values in the same file: within the lowest and highest region (±0.01, rounding), or equal to its one region. It holds for every country in every file.
Code: pipeline/src/envdash/transforms/future/cckp_projections.py · code sha256 5c4361ac9b2983cd… · inputs cf36c862f95c… 4b166b083522… 4d273e51a4f0… f86f049fc2fa… 396f4ffc3573… 4c9463e33793… 5e30ed390451… 4a5b5c51cc0c… 4af2e2cd26aa… fc3a0eecb0b8… 1404b47bde39… d8b199027f65… 7c9e063d4635… 938c46c22d28… cddb43f61d9d… 63dda8a68ed2… ce6b747fdb2e… 43a2a9d0b59b… c1d7b294d610… 55950b3defa6… 0fc2ade15bba… 5a2963241ba0… e532ddf29308… 3b4d376e7504… b94de15def7b… 28fcd0e7b0c3… 6e6f7f2e9cf8… b31a1fd23b6a… bfc9f783afb8… abed62652b76… b494949f953a… 918144655c5d… 975c92174f89… fdbf83a3ddc1… 334bcbc33fe2… 34e7090a97bb… 4515cf3da62b… 3ac26850ab63… dce8985347fd…
Published every country and territory (246), mapping CCKP's codes to the site's entities (ISO 3166-1 alpha-3 codes as they are, KSV, CCKP's code for Kosovo, as KOS): the median as the value and the 10th and 90th percentiles as the range, as printed, with the 20-year window as the period and the emissions scenario as a dimension.
Code: pipeline/src/envdash/transforms/future/cckp_projections.py · code sha256 5c4361ac9b2983cd… · inputs cf36c862f95c… 4b166b083522… 4d273e51a4f0… f86f049fc2fa… 396f4ffc3573… 4c9463e33793… 5e30ed390451… 4a5b5c51cc0c… 4af2e2cd26aa… fc3a0eecb0b8… 1404b47bde39… d8b199027f65… 7c9e063d4635… 938c46c22d28… cddb43f61d9d… 63dda8a68ed2… ce6b747fdb2e… 43a2a9d0b59b… c1d7b294d610… 55950b3defa6… 0fc2ade15bba… 5a2963241ba0… e532ddf29308… 3b4d376e7504… b94de15def7b… 28fcd0e7b0c3… 6e6f7f2e9cf8… b31a1fd23b6a… bfc9f783afb8… abed62652b76… b494949f953a… 918144655c5d… 975c92174f89… fdbf83a3ddc1… 334bcbc33fe2… 34e7090a97bb… 4515cf3da62b… 3ac26850ab63… dce8985347fd…

What it covers

Geography: Each country or territory as drawn by the World Bank's official boundaries: the area-weighted mean of the 0.25° grid cells inside it, averaged over the land, not weighted by where people live. No world value.
Basis: CMIP6 multi-model ensemble (bias-corrected and downscaled to 0.25° by CCKP): the median of the models, with their 10th–90th percentile as the range. The year's highest daily maximum temperature (CCKP's txx), averaged over the 20 years. 20-year averages: 1995–2014 from the historical runs; 2020–2039, 2040–2059, 2060–2079 and 2080–2099 under SSP1-2.6, SSP2-4.5 and SSP5-8.5. Projections, not forecasts of any one year.
Unit: degrees Celsius on the hottest day of the year (°C)

Get the numbers

CSV JSON, with full provenance

Licence: CC BY 4.0 with the World Bank Dataset Terms (free to reuse with credit). Credit: The World Bank: Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree (doi:10.57966/128g-6s70): Copernicus Climate Change Service ERA5. The World Bank: Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree (doi:10.57966/b54h-7s87): CMIP6 multi-model ensemble (World Climate Research Programme).

Shared under the World Bank Dataset Terms (CC BY 4.0 with additional terms), including their attribution requirement, which passes to anyone who shares these data further: https://www.worldbank.org/ext/en/legal/terms-conditions/datasets

How to cite

Climate Change Knowledge Portal: Observed Climate Data, ERA5 0.25-Degree, DOI: https://doi.org/10.57966/128g-6s70. Climate Change Knowledge Portal: Projected Climate Data, CMIP6 0.25-Degree. DOI: https://doi.org/10.57966/b54h-7s87 Via Environment Dashboard, https://environmentdashboard.org/data/future/wb-cckp/hottest-day-countries (version cmip6-x0.25 txx climatology, fetched 2026-10-16, data accessed 2026-10-16).

Sources

Climate Change Knowledge Portal country climate data Report a problem with this number