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Physical Geography, Climate

damaging hurricanes, Yunque, average temperature, San Juan, higher elevations

Puerto Rico has an agreeable climate. It is tropical at the lower elevations and subtropical at the higher elevations. There is little difference from season to season, and the length of the day remains fairly constant throughout the year.

San Juan has a mean July temperature of 28C (83F) and a mean January temperature of 25C (77F). The average temperature of the seawater surrounding the island is 27C (81F), with little variation during the course of the year.

The entire island is cooled by the trade winds from the northeast. This air also contains much water vapor. As the air is forced to rise over the mountains, it becomes cooler and the water vapor condenses and falls as rain. San Juan receives an average of 1,330 mm (52 in) of precipitation each year. The mountain areas receive more rain than almost any other part of the United States, with more than 5,100 mm (200 in) falling each year at El Yunque. The southwestern coastal area generally receives the least rain in Puerto Rico and has a distinct dry season from December to March. Puerto Rico is sometimes struck by damaging hurricanes traveling from the east, especially from August to October.



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damaging hurricanes, Yunque, average temperature, San Juan, higher elevations, water vapor, precipitation, trade winds, mountains, seawater, northeast, rain, Puerto Rico, island, entire island, season, air, average, course, day, United States, year, length

 
 

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