The climate in Puerto Rico

Climate zone: tropics
The climate in Puerto Rico is very warm, with an annual average of 30 degrees, but has few truly tropical and sultry months. It is warm to hot all year round and invites to bathe at average water temperatures of 28 degrees. Dued to the lesser rain the best time for traveling is from February to March.

Long-term development of temperatures from 1997 - 2021

In contrast to single record values, a long-term development cannot simply be brought about by all weather stations in the country. Both the number and the locations are constantly changing. A simply calculated average value would give a falsified result. If several measuring stations in particularly cold mountain or coastal regions are added in one year, the average would already decrease as a result of this alone. If a station fails during the summer or winter months, it does not provide any values and falsifies the average again. The subsequent long-term development was therefore reduced to only 1 measuring points in order to have actually comparable data over as long a period as possible.
In the years 1997 to 2021 there were only these 1 weather stations in the whole country, which reported continuous temperature values (San Juanort). From these weather reports we have created a long-term development that shows the monthly average temperatures. The hottest month in this entire period was June 2012 with 29.8 °C. February 1997 was the coldest month with an average temperature of 23.9 °C.
The average annual temperature was about 26.9 °C in the years after 1997 and about 27.5 °C in the last years before 2021. It has therefore increased only slightly by about 0.7 °C over the past 25 years. This trend only applies to the selected 1 weather stations in Puerto Rico. A considerably more comprehensive evaluation of the global warming has been provided separately.

Data basis: German Weather Service, individual values averaged and supplemented by own elements.