The Dominican Republic is a tropical country located in the Caribbean Sea. The weather in the Dominican Republic is typically hot and humid, with average temperatures ranging from 26-28 degrees Celsius. December is one of the driest months of the year, with an average of only 2-3 inches of rainfall. However, the humidity levels can still be high, so be sure to pack light, airy clothing. The days are typically sunny, with some occasional showers in the afternoon.