The Dominican Republic enjoys a year round tropical maritime climate. A latitude of 17° 36, - 19° 58, places the Dominican Republic at the border of the tropical zone. Sea breezes refresh the insular territory, evening out temperatures to average 23°C in the early mornings to 32°C at mid-day. There is little difference between winter and summer temperatures with July averaging at 82ºF (28ºC) and January at 76ºF (23ºC).

The lowest temperatures occur in the mountain areas near Constanza, where temperatures have dropped to 0°C, and record highs have been registered at the frontier with Haiti, 39°C in the summer.

The months of May to November are regarded as the rainy season. The hurricane season lasts from June through November, with August-September being the peak months.

Av. High Av. Low Av. Rain   January 81ºF 71ºF 2.6 in 66mm February 81ºF 71ºF 2.1in 53mm March 82ºF 71ºF 2.1 in 53mm April 83ºF 72ºF 2.7 in 68mm May 85ºF 73ºF 4.9 in 124mm June 86ºF 75ºF 4.1 in 104mm July 86ºF 76ºF 3.1 in 79mm August 87ºF 76ºF 4.1 in 104mm September 87ºF 75ºF 4.0 in 101mm October 86ºF 74ºF 6.0 in 152mm November 84ºF 73ºF 4.6 in 117mm December 82ºF 72ºF 3.1 in 79mm