Concerns over the status of freshwater availability in the Caribbean region and in particular the eastern Caribbean states have been expressed for at least the past 30 years. There is a growing realization that availability will be vulnerable to extremes of climate behavior and increasing demand for water. Climate modeling for the Caribbean region under a range of scenarios suggests a continuation of a warming in average temperatures, a lengthening of seasonal dry periods, and increases in frequency of occurrence of drought conditions. Using information from the most recent IPCC report and regional downscaling, the authors suggest what some of the macrolevel changes in temperature and rainfall might be and the implications for water resources availability. This article evaluates the existing availability of water resources, the implications of the most recent climate change modeling for the Caribbean region, and the impact of on existing service provision strategies.