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The climate in Puerto Rico

Average daytime and nighttime temperatures


All climatic diagrams of this page are taken from the collected data from 4 measuring stations in Puerto Rico.
All data correspond to the average monthly values of the last 20 years.


Back to overview: Puerto Rico


Climate zone: tropics

With a yearly average of 30 °C the climate in Puerto Rico ist warm, but has only a few really tropical and sticky 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. Most precipitation decrease in December.

Duration of daylight and sunshine in Puerto Rico

hours of sunshine per daySunshine hours per day in Puerto Rico
rainy days per monthRainy days per month in Puerto Rico
Precipitation in mm/dayPrecipitation in Puerto Rico
Water temperatureWater temperatures in Puerto Rico
Relative humidity in %Relative humidity in Puerto Rico
Absolute humidity in g/m³ (approx.)Absolute humidity in Puerto Rico
Climate charts for other regions in Puerto Rico

Long-term development of temperatures from 1997 - 2020

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 2020 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 2012 with 29.8 °C. 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 2020. It has therefore increased only slightly by about 0.7 °C over the past 24 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.

Long-term development of temperatures in Puerto Rico


More detailed information on global warming with a view by continent can also be found on our topic page on climate change. Data basis: German Weather Service, individual values averaged and supplemented by own elements.