Climate change is intensifying extreme weather events such as heatwaves, floods, and landslides, impacting all Austrian federal states. Among all sectors healthcare faces the most severe societal impacts of climate change due to more frequent heatwaves impacting an aging population. Being the first point of contact to the health system, primary care (PC) is at the forefront of addressing these challenges. Considering that the floods in Lower Austria in 2024 disrupted services in 32 medical practices, including 14 general practices, it becomes clear that PC is also severely affected. The HEX-PV project aims to develop, pilot, and evaluate a disaster preparedness and response toolkit for PC settings, focusing on climate-related extreme weather events. The project is conducted in collaboration with PC facilities in two Austrian federal states. The HEX-PV project uses a multi-phase applied research design: expert surveys, workshops, and an intervention phase piloting the toolkit. The baseline survey will assess knowledge, experiences, preparedness, and needs for extreme weather events. The survey will be tailored to the Austrian PC and will form the basis for the toolkit development. Preliminary findings from a prior research project indicated significant gaps in preparedness and risk communication for extreme weather events in PC, highlighting the need for tailored materials and tools to enhance response capabilities. At the time of ICAP, the results from the HEX-PV baseline survey will be available shedding further light on competence levels, perceived roles and needs of PCPs in disaster preparedness and response. PC plays a critical role in addressing the health impacts of climate change. The HEX-PV project lays the groundwork for practical, context-specific interventions to improve disaster preparedness and resilience in Austrian PC.