The system in six readings August is starting normally.
August is starting normally.
And the week ahead looks normal.
What just fell, what just left the tap, and what the sky is bringing next — read in pairs, as cause and effect.
01 Supply — What came in
01 Rainfall · August · 3 stations · as of 2026-08-02
Well below a
typical August so far.
0.0× normal so far
this August so far
typical first 2 days of August
Theewaterskloof 0mm · 0.0×
Voëlvlei 0mm · 0.0×
Wemmershoek 0mm · 0.0×
Verdict Well below a typical August through day 2.
02 Storage · 6 dams combined
The dams held flat this week.
78% was 78% last week
Verdict Healthy — well above the trigger band for restrictions.
02 Demand — What went out
03 Daily demand · vs target
The city is using
less than expected.
874Mℓ 101 Mℓ under target
Verdict 10% below the daily target — the kind of week that buys headroom.
04 Per person · ℓ/day · 12-mo avg
11 litres less,
per Capetonian.
149ℓ/day −11 ℓ vs trailing avg
Trailing 12-month average
Verdict A small but real saving — sustained, this is what shaves a percentage point off summer drawdown.
03 Forecast — What's coming next
05 Forecast · 7 days · 6 catchments
About a typical
week of rain.
1.3× normal
vs the same 7 calendar days averaged across the past 10 years
Verdict Sat looks like the wettest day.
06 Where it lands · per catchment
Each dam, and
what's coming for it.
1.3× a typical week
total forecast across the six catchments vs the same 7 calendar days over the past 10 years, weighted by dam size
Theewaterskloof 79%
+19mm 1.6× normal
Voëlvlei 62%
+14mm 1.1× normal
Berg River 90%
+27mm 1.2× normal
Wemmershoek 100%
+25mm about normal
Steenbras Upper 100%
+25mm 1.5× normal
Steenbras Lower 54%
+24mm 1.5× normal
Verdict Berg River (90% full) and Wemmershoek (100% full) get the biggest soaking.
