Cape Town rainfall by month
Cape Town rainfall by month follows a tight Mediterranean pattern: June and July do the heavy lifting, summer averages nothing. Decade of data charted.
Articles · long-form notes from the project
Articles
In-depth articles about Cape Town's water supply, dam levels, conservation, and drought history.
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Theewaterskloof Dam, explained
Theewaterskloof Dam holds 479 Mm³ and anchors Cape Town's water supply. See its live level, a decade of history, and how the 2018 Day Zero crisis unfolded.
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Cape Town desalination, explained
Cape Town's R5-billion desalination plant adds 70 ML/day by 2031. What desalination, reuse and groundwater fix, and what stays with the rain.
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Cape Town drought: a data case study
A data case study of the Cape Town drought 2015–18: how dams fell from 71% to 21%, why Day Zero was averted, and what the WCWSS numbers say today.
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Day Zero in Cape Town, explained
How close Cape Town came to running its taps dry in 2018, what Day Zero meant in litres and percentages, and why the 13.5% threshold still matters.
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El Niño & Cape Town rainfall
El Niño explained for Cape Town: how the Pacific cycle works, why ENSO is a weak signal for the city's winter rains, and what 2015-17 actually showed.