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<script src="https://www.waterdashboard.co.za/widget.js" data-variant="level" async></script>The dams started 2021 at 92% full and ended it at 95%. They were lowest at 68% on 5 May 2021 and highest at 102% on 1 September 2021.
The 26th lowest yearly low of the 27 years since 2000.
Winter rain was 141% of average, and it was neither an El Niño nor a La Niña winter.
Winter rain is April to September in central Cape Town (Open-Meteo), against the average winter since 2000.
The average combined level in each month.
| Month | Average level |
|---|---|
| January | 88% |
| February | 80% |
| March | 74% |
| April | 70% |
| May | 71% |
| June | 76% |
| July | 94% |
| August | 99% |
| September | 101% |
| October | 99% |
| November | 99% |
| December | 97% |
Combined storage of the six big dams, by date. Normal is the middle half of the years before it.
| Date | 2021 | 2020 | Normal range |
|---|---|---|---|
| 1 Jan | 92% | 76% | 66% to 87% |
| 15 Jan | 88% | 73% | 63% to 84% |
| 1 Feb | 83% | 71% | 59% to 79% |
| 15 Feb | 80% | 68% | 56% to 75% |
| 1 Mar | 76% | 64% | 52% to 71% |
| 15 Mar | 75% | 61% | 48% to 68% |
| 1 Apr | 72% | 58% | 44% to 64% |
| 15 Apr | 71% | 56% | 41% to 63% |
| 1 May | 68% | 55% | 39% to 63% |
| 15 May | 68% | 54% | 40% to 62% |
| 1 Jun | 76% | 55% | 44% to 65% |
| 15 Jun | 75% | 58% | 48% to 69% |
| 1 Jul | 84% | 63% | 53% to 77% |
| 15 Jul | 95% | 75% | 54% to 86% |
| 1 Aug | 98% | 78% | 63% to 94% |
| 15 Aug | 98% | 83% | 68% to 99% |
| 1 Sep | 102% | 91% | 73% to 100% |
| 15 Sep | 101% | 97% | 75% to 101% |
| 1 Oct | 100% | 100% | 78% to 101% |
| 15 Oct | 99% | 100% | 79% to 100% |
| 1 Nov | 100% | 99% | 80% to 99% |
| 15 Nov | 99% | 99% | 78% to 99% |
| 1 Dec | 98% | 98% | 73% to 97% |
| 15 Dec | 97% | 95% | 69% to 95% |
Source: City of Cape Town. History from City open data (2000 to January 2026).