Updated!

We are proud to announce the newly redesigned Climdex.org portal. The site provides a smoother user experience and now also hosts the HadEX3 dataset by Dunn et al. (2020).

We hope you enjoy using the site and if you have any feedback or have found an issue, please tell us about it so we can make Climdex.org even better.

Summing up climate extremes

27 different indices describe changes in heat, cold, rainfall and drought over time—the hottest day each year, for example, or the amount of rainfall in the rainiest 5 day stretch each year.

Learn more

For any dataset

The Climdex indices are already available for a number of global climate datasets: we host several right here, and more are available from our partners. Find a dataset that suits your needs.

Browse datasets

Plots and data, ready to go...

We provide trend maps, average maps, time series plots and raw data of the indices for our hosted datasets right here. Choose the dataset, the index, the timespan and the location.

Access data

... Or do it yourself

If you have your own climate data, you can use our software to calculate the indices yourself!

Get the software