<p>While studies undertaken worldwide revealed variations in how people travel during extreme weather events, no investigation has been carried out in Bangladesh to explore the impact of such weather events on people's choice of transport mode and modal shift. This study addresses this gap by determining the influence of seasonal and regional variability of weather events on mode choice and modal shift of Dhaka's commuters and non-commuters. In this regard, extreme heat, heavy rainfall, and waterlogged conditions were considered as extreme weather events. Results show that shifts from usual travel modes during extreme weather events are significantly influenced by demographics, situational factors, trip types, and travel priorities. Modal shifts during extreme weather are more likely among females, older adults, high-income individuals, and those prioritizing safety and convenience; while males, commuters, and vehicle owners are less likely to change usual travel modes. The availability of alternative routes, regular checking of weather updates, and waterlogging events further increase the likelihood of modal shift. These demographic, situational, and psychological factors should be considered in transportation planning to ensure equitable and sustainable mobility in all weather conditions.</p>