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

Extract

Regional summary

• Regional monthly mean rainfall for December 2025 was 100mm, approximately 41% above the mean
• 10 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).
• 29 (78%) groundwater sites are at a normal or higher groundwater level status. ....

January 2026

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

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