During your vacation in the Dominican Republic you'll likely benefit from balmy weather regardless of when you visit. In December, the temperature doesn't change much during the course of a typical day.

The daily high temperature averages degrees dropping to degrees overnight.

As shown above, during the first third of the month the daily low averages degrees while the average daily high is degrees. If you visit during the middle of the month the daily low is typically around degrees while the daily high average around degrees. Over the last third of December the low averages degrees while the average high temperature is degrees. For a more detailed understanding of temperatures in the Dominican Republic during December, browse the above table.