Datasets containing tropical cyclone maximum wind speed (in m/s) return periods, generated using the STORM climate change datasets (see https://figshare.com/s/397aff8631a7da2843fc) Return periods were empirically calculated using Weibull's plotting formula. The STORM_FIXED_RETURN_PERIOD datasets contain maximum wind speeds for a fixed set of return periods at 10 km resolution in every basin and for every climate model used here (see below). The STORM_FIXED_WIND_SPEED dataset contains return periods for a fixed set of maximum wind speeds at 10 km resolution in every ocean basin. The STORM_CITIES dataset contains return periods at fixed wind speeds and wind speeds at fixed return periods (on two seperate sheets), occurring within 100 km from a selection of 18 coastal cities. The STORM_ISLANDS contains return periods at fixed wind speeds and wind speeds at fixed return periods (on two seperate sheets), occurring within 100 km from the capital city of an island. We included the Small Island Developing States and a set of other islands.