U9 



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Monthly and Annual Mean Surface Water Temperatures, F 



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HALF MOON REEF LIGHT STATION, MATAGORDA BAY, TEXAS 28 32.3'N. 96 15.^'W. 



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



1930 45.5 59.4 60.2 71.2 75.8 81.4 83.6 84-5 80.6 72.2 63.6 54.6 69.4 



1931 53.2 61.5 60.4 66.1 74.0 82.5 85.6 84.2 83.8 79.6 70.3 57.2 71.5 



32 59.0 63.8 59.4 71.4 77.4 83.4 85-3 85.0 81.6 72.4 60.4 52.8 71.0 



33 58.9 55.2 64.2 70.0 79.4 81.0 83.8 84.0 83.7 76.0 - 66.2 (72.3) 



34 58.8 56.8 59.9 - 74.0 80.0 83.0 83.5 82,4 - - - (70.5) 

 1935 58.2 57.9 65.8 ------ _--- 



(6) (6) (6) (4) (5) (5) (5) (5) (5) (4) (3) (4) 



Mean 55.6 59.1 61.6 69.7 76.1 81.7 84.3 84.2 82.4 75.0 64.8 57.7 71.0 



Oyster built reef abcut 3 miles SW of Palacios Point. 



Readings at 8 a.m. and 6 p.m. 

 Source - USBF 



