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<script src="https://www.waterdashboard.co.za/widget.js" data-variant="level" async></script>The dams started 2018 at 31% full and ended it at 66%. They were lowest at 20% on 23 April 2018 and highest at 76% on 8 October 2018.
The 2nd lowest yearly low of the 27 years since 2000.
Winter rain was 124% 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 | 28% |
| February | 25% |
| March | 23% |
| April | 21% |
| May | 22% |
| June | 36% |
| July | 54% |
| August | 60% |
| September | 71% |
| October | 76% |
| November | 73% |
| December | 68% |
Combined storage of the six big dams, by date. Normal is the middle half of the years before it.
| Date | 2018 | 2017 | Normal range |
|---|---|---|---|
| 1 Jan | 31% | 47% | 71% to 90% |
| 15 Jan | 29% | 43% | 64% to 87% |
| 1 Feb | 26% | 39% | 59% to 84% |
| 15 Feb | 25% | 36% | 56% to 80% |
| 1 Mar | 24% | 32% | 52% to 76% |
| 15 Mar | 23% | 30% | 48% to 73% |
| 1 Apr | 22% | 27% | 44% to 69% |
| 15 Apr | 21% | 25% | 41% to 66% |
| 1 May | 21% | 23% | 39% to 63% |
| 15 May | 21% | 21% | 40% to 63% |
| 1 Jun | 26% | 19% | 44% to 65% |
| 15 Jun | 34% | 23% | 48% to 76% |
| 1 Jul | 45% | 25% | 53% to 82% |
| 15 Jul | 55% | 26% | 54% to 87% |
| 1 Aug | 57% | 28% | 63% to 94% |
| 15 Aug | 59% | 31% | 68% to 100% |
| 1 Sep | 66% | 35% | 73% to 101% |
| 15 Sep | 70% | 37% | 75% to 101% |
| 1 Oct | 76% | 38% | 78% to 101% |
| 15 Oct | 76% | 37% | 79% to 100% |
| 1 Nov | 75% | 38% | 80% to 99% |
| 15 Nov | 73% | 37% | 78% to 99% |
| 1 Dec | 70% | 36% | 73% to 97% |
| 15 Dec | 69% | 33% | 69% to 95% |
Source: City of Cape Town. History from City open data (2000 to January 2026).