Hamish Lewis is a Lecturer in Climate Change at the University of Waikato in the School of Science. He completed his PhD in Physics at the University of Auckland, with a specialization in atmospheric physics focused on low clouds. His doctoral research examined upstream large-scale control of subtropical low-cloud climatology and memory in the clouds through an assessment of upstream large-scale control of low-cloud climatology.
Lewis’s research centers on climate extremes, regional climate modeling, boundary layer and land surface processes, and low clouds. He has contributed to studies on dynamical downscaling of CMIP6 models over New Zealand, future climate projections for climatology and extremes, intensification of heat extremes in maritime climates, storylines of future drought, and linkages between marine heatwaves and extreme weather over land. Key publications include works from 2023 to 2026 in journals such as Journal of Climate, Environmental Research Letters, Climate Dynamics, and Earth System Dynamics. Lewis has also been involved in research on the role of soil moisture in heat extremes, downscaling with AI for climate extremes, and projections of tropical and ex-tropical cyclones. His work has informed discussions on urban heat risks and drought planning in New Zealand and globally.