The tool would allow for "consistent, risk-informed decision-making" across the organisation, a notice of intent published on Tuesday said.
"Climate, hazard, asset and other data inputs are being continuously improved and refreshed," the notice said.
"It is important that a citywide climate risk assessment solution be dynamic and able to be updated regularly to reflect new information."
The notice said the council wanted to develop a resilience framework to embed climate adaptation and resilience in activities and decisions.
The impact of a range of climate hazards facing Dunedin was aggravated by ageing infrastructure, already under stress during storm events, it said.
"Going forward, projected increases in a wide range of climate and other hazards present a multifaceted risk profile that threatens infrastructure, housing, community wellbeing and essential services across Dunedin."
A tender for the tool was expected to be released in late January and a contract awarded by April.
Delivery could include software, "traditional reporting, or hybrid and other innovative approaches".
The council planned to trial the tool for the 15-month period to June 2027.
At last week’s audit and risk meeting, members approved investigating ways to align the council’s climate-related risk management more closely with the NZ Climate Standards.
Cr Lee Vandervis voted against the motion, saying he was concerned the council had already spent "significant amounts" of ratepayer money on climate mitigation.
