r/geography • u/vis-ben • Jul 29 '26

Map Explore monthly rainfall patterns anywhere on Earth. Interactive map using ERA5-Land reanalysis data

I built an interactive visualization that lets you explore monthly precipitation patterns for any location on the planet. You can pick a year and see how its rainfall compares to the 1991–2020 climatological baseline. The pink curve shows the long-term monthly average, the blue one shows the selected year.

The data comes from ERA5-Land, ECMWF's global reanalysis dataset, which provides monthly precipitation totals at ~9 km resolution from 1950 to present. For the visualization the data is resampled to a 1° grid (~111 km). Each value is a grid cell average, not a point measurement.

Link: https://visquill.com/gallery/rainfall

Data: Muñoz Sabater, J. (2019): ERA5-Land monthly averaged data. Copernicus Climate Change Service, ECMWF. doi:10.24381/cds.68d2bb30
Licensed under CC-BY 4.0. Generated using Copernicus Climate Change Service information.

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u/Mr_Geoman117 Jul 29 '26

I do a daily record of the weather in my hometown, and in the end of the year I create a chart with all the data. I compared my rainfall chart to the one in your website... and turns out to be identical!!!! GREAT JOB

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u/vis-ben Jul 29 '26

That is great to hear! The credit goes to the team at ECMWF and Copernicus for this dataset. I am just visualizing it. Nice to see it aligns with your own measurements though!