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Monthly and Annual Mean Surface V/ater Temperatures, F 



ST. JOHNS LIGHTSHIP, FLORIDA 30°30.0«N. 81 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 78.8 82.3 79.8 80.5 73.6 70.8 60.3* - 



*Moved to 30°23.0»N. 81 l8'W 



Off St. Johns Bar 



Readings at 8 9,ni. and 6 p.m. 

 Source - D3BF 



