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Monthly and Annual Mean Surface V/ater Temperatures, F 



ST. JOHNS LIGHTSHIP, FLORIDA 30°30.0'N. 8l°l8'W. 



Year Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec . Ann . 

 1929 - 55.5 61.1 69.0 7U.5 78.3 82,3 79.8 80.5 73.6 70.8 60.3* - 



«Moved to 30°23.0'N. 81 18»W 



Off St. Johns Bar 



Readings at 8 i.m, and 6 p.m. 

 Source - USBF 



