The climate of the Dominican Republic is mostly tropical. 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. Some snowflakes can fall in rare occasions on the top of the 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 country every couple of years, with 65% of the impacts along the southern coast. Hurricanes are most likely between August and October. The last time a category 5 hurricane struck the country was Hurricane David in 1979