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

1 October 2026

Extract

Regional summary

• Regional monthly mean rainfall for September 2026 was 87mm, approximately 15% 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).

• 23 (62%) groundwater sites are at a normal or higher groundwater level status.

Auckland Council, October 2026

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

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