It's hoped this weekend's heavy rain will bring relief to drought stricken Auckland

Watercare reports dams are nearing 50 per cent capacity -- compared to a historic average of 77.3 per cent.

A spokesperson says Auckland didn't receive the near-normal rainfall which was initially predicted for summer.

Meanwhile, Niwa forecaster Ben Noll says soil moisture levels are at a deficit between 90 and 110 millimetres.

He says the region is probably a good two or three soakings away from getting the groundwater recharged.

Noll says only then can we expect more water going into waterways - and then into dams.