A four-component (incoming and outgoing shortwave and longwave radiation) radiometer (model CNR1) was installed on a monitoring station (LZ40) constructed by the South Florida Water Management District (SFWMD) in the approximate center of Lake Okeechobee in Florida, located at 26 degrees 54 minutes 06.254 seconds North, 080 degrees 47 minutes 21.301 seconds West. Specific time-series collected for this data release include the following parameters with units of watts per square meter: (1) incoming shortwave radiation, (2) outgoing shortwave radiation, (3) incoming longwave radiation, and (4) outgoing longwave radiation. Instantaneous readings of each parameter were measured every 5 seconds and averaged over 15-minute intervals by a Campbell Scientific CR1000 data-logger. The data begin on January 1st, 2021 and end on December 13th, 2021 due to battery failure at the station.