| Gariep Dam normally receives about 273mm of rain per year, with most rainfall occuring mainly during summer. The chart below (lower left) shows the average rainfall values for Gariep Dam per month. It receives the lowest rainfall (3mm) in June and the highest (51mm) in March. The monthly distribution of average daily maximum temperatures (centre chart below) shows that the average midday temperatures for Gariep Dam range from 15.8°C in June to 31.3°C in January. The region is the coldest during July when the mercury drops to 0.2°C on average during the night. Consult the chart below (lower right) for an indication of the monthly variation of average minimum daily temperatures. |
| Move mouse over chart bars for monthly values |
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Average rainfall (mm)
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Average midday temperature (°C)
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Average night-time temperature (°C)
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