The loss figure covers property and motor hull lines of business, in line with the PERILS coverage definition for Australia and based on data collected from affected insurers.
At least 30 people were injured, some 2,700 homes in Aomori were without power, and numerous fire incidents were recorded, according to reports from local media.
The insurer posted positive earnings in spite of losses from Typhoon Yagi in 2024, and underwriting margins have shown a recovery in the first nine months of 2025.
The bushfires have damaged at least 20 homes, critical infrastructure, fencing, agricultural assets, and national parks in the state, and killed one firefighter, according to initial assessments.
This focus on catastrophe risk is also expected to fuel market expansion, with GWP forecast to grow at a CAGR of 11.5% through 2030 amid rising losses.
November events added up to A$510m (US$332m) in estimated losses, with nat cat events depleting two-thirds of insurer's natural hazard allowance less than five months into the year.
