The Dominican Republic is a country located in the island of Hispaniola, in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares with the nation of Haiti, making Hispaniola one of two Caribbean islands, along with Saint Martin, that are shared by two sovereign states. The Dominican Republic is the second-largest Caribbean nation by area (after Cuba) at 48,671 square kilometres (18,792 sq mi), and third by population with approximately 10 million people, of whom approximately three million live in the metropolitan area of Santo Domingo, the capital city.
The Dominican Republic has a tropical rainforest climate in the coastal and lowland areas. Due to its diverse topography, Dominican Republic's climate shows considerable variation over short distances and is the most varied of all the Antilles. The annual average temperature is 25 °C (77 °F). At higher elevations the temperature averages 18 °C (64.4 °F) while near sea level the average temperature is 28 °C (82.4 °F). Low temperatures of 0 °C (32 °F) are possible in the mountains while high temperatures of 40 °C (104 °F) are possible in protected valleys. January and February are the coolest months of the year while August is the hottest month. Snowfall can be seen in rare occasions on the summit of Pico Duarte.
The wet season along the northern coast lasts from November through January. Elsewhere the wet season stretches from May through November, with May being the wettest month. Average annual rainfall is 1,500 millimetres (59.1 in) countrywide, with individual locations in the Valle de Neiba seeing averages as low as 350 millimetres (13.8 in) while the Cordillera Oriental averages 2,740 millimetres (107.9 in). The driest part of the country lies in the west.
Tropical cyclones strike the Dominican Republic every couple of years, with 65% of the impacts along the southern coast. Hurricanes are most likely between August and October. The last major hurricane that struck the country was Hurricane Georges in 1998.