Monthly average solar radiation images for Puerto Rico can be downloaded at the following link:
http://academic.uprm.edu/hdc/GOES-PRWEB_MONTHLY_RESULTS/solar_radiation/

The images includes 26 months of data starting in January 2010.  Other atmospheric/hydrologic data images are also available at the following link:

https://pragwater.com/goes-puerto-rico-water-and-energy-balance-goes-web-algorithm/