Wemmershoek Dam — current level 54% as of 11 May 2026
Wemmershoek Dam is up 5.2 pts on last week and up 3.8 pts on the same week last year . Wemmershoek is one of two dams owned by the City of Cape Town rather than the national Department of Water and Sanitation, but it counts toward the combined system total the same way.
A decade of late-autumn readings.
One bar per year, showing where Wemmershoek Dam sat the same week each May, at the end of the dry season. The 2017 and 2018 lows are the Day Zero drought. The bars climbing again from 2020 onwards are the wet winters that brought Cape Town's dams back.
Will the rain come?
Cape Town's reservoirs refill almost entirely between May and September. A dry winter is the single biggest predictor of next summer's restrictions. The 7-day forecast over the Wemmershoek catchment is below the long-term median.
Wemmershoek Dam is one of six.
Wemmershoek Dam is one of six dams that supply Cape Town. The combined level across all six is the figure the City and DWS actually plan against. Any single dam reading is only part of the story.