Ponce Rainfall At Ponce in Puerto Rico, for a period of record spanning 1971 – 2014 average annual rainfall sum = 920.4 mm wettest year on record = 1406.7 mm of rainfall in 2003 driest year on record = 543.1 mm of rainfall in 1980 wettest month on average = 155 mm of rainfall in September … Continue reading Ponce Rainfall