Where the Rain Fell – Monthly Precipitation Explorer
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Where the Rain Fell
Pick any location on Earth, select a year, and see how its monthly rainfall compared to the long-term average. The baseline is the 1991–2020 climatological normal — the standard reference period used by meteorologists worldwide. Bars above the baseline indicate wetter-than-average months; bars below indicate drier ones.<br>The data comes from ERA5-Land, a gridded reanalysis dataset that reconstructs the global climate system by combining numerical weather modelling with historical observations. It covers the entire globe at roughly 9 km resolution, making it possible to explore rainfall patterns in any region — from the Amazon basin to the Sahel.<br>For in-browser performance, the data is resampled from the original ~9 km grid to a 1° grid (~111 km) using bilinear interpolation. Each value represents a grid cell average, not a point measurement.<br>Data Source<br>ERA5-Land monthly averaged reanalysis data from the Copernicus Climate Change Service (C3S), produced by ECMWF. ERA5-Land provides a consistent, long-term record of land surface variables at enhanced resolution compared to ERA5.<br>Muñoz Sabater, J. (2019): ERA5-Land monthly averaged data. Copernicus Climate Change Service, ECMWF. doi:10.24381/cds.68d2bb30<br>Built with<br>VisQuill — a reactive vector graphics framework for interactive data visualization. visquill.com
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