Hydrology, rainfall information for Auckland, published on the first of the month.

Extract

Regional summary

• Regional monthly mean rainfall for August 2025 was 103mm, approximately 9% below the mean
• 9 out of 10 sites have a soil moisture status of normal or higher
• All 36 river monitoring sites are above the mean annual low flow (MALF)
• 30 (81%) groundwater sites are at a normal or higher groundwater level status. ...

September 2025

https://aklc.hydrotel.co.nz/HydroSitRep.html

Any questions and for more information email EnvironmentalData@aucklandcouncil.govt.nz