Explore historical and projected climate data, climate data by sector, impacts, key vulnerabilities and what adaptation measures are being taken. Explore the overview for a general context of how climate change is affecting Barbados.

Impacts Water

Climate change is likely to threaten the already-limited fresh water resources in Barbados significantly in two ways. First, by sea level rise, which is likely to increase saltwater intrusion into freshwater aquifers. Second, the increasing frequency of drought conditions will strain the production of aquifers and lengthen their regeneration time. According to the Caribsave Climate Risk Atlas (CCCRA), approximately 86.4% of potable water is sourced from just three catchments on the island. These are St. Michael (52.8%), St. Phillip (20.2%) and the West Coast (13.4%). With rainfall rates projected to decrease and average temperatures projected to increase, the recharge rate for these catchments will be reduced drastically. 

This section provides insights into projected climate change impacts on various hydrological indicators.


Data presented under Historical Climate Conditions are reanalysis products derived from ERA5-Land data. ERA5-Land is a global land-surface dataset at 9 km resolution, consistent with atmospheric data from the ERA5 reanalysis from 1950 onward. Climate reanalyses combine past observations with models to generate consistent time series of multiple climate variables. They provide a comprehensive description of the observed climate as it has evolved during recent decades, on 3D grids at sub-daily intervals. 

This data has been collected, aggregated and processed by the Climate Resilience Cluster of the European Space Agency’s (ESA) Earth Observation for Sustainable Development (EO4SD) initiative.