108 



Monthly and Annual Mean Surface Water Temperatures, °F 



CH.'lRILSTON lightship 32°/.0.7'N 79°42.9'W (1925-28) 



32 a.O N 79 43.0 W (1929-33) 



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



1925 _ - - - 71.7 77.4 81.9 81.5 81.6 75.5 62.0 54.1 - 



1926 48.3 51.1 52.4 59-5 68.0 75.4 79.2 82.1 81.4 73.6 60.0 54.8 65.5 



28 47.6 48.3 53.2 61.6 66.2 74.3 76.8 80.3 76.5 73.7 62.5 54.4 64.6 



29 52.5 51.0 57.2 66.6 71.3 76.1 79.9 80.5 77.3 70.1 65.5 54.5 66.9 



1930 53.2 53.8 55.5 62.6 72.3 76.6 79.4 78,7 81.6 71.7 60.7 52.8 66.6 



1931 48.0 51.4 53.4 60.8 70.1 77.2 83.2 79.2 80.3 74.1 66.1 62.8 67.2 



32 60.9 60.4 57.0 63.0 71.8 77.8 81.6 79.8 78.5 72.4 63.3 55.7 68.5 



33 56.6 53.8 57.8 63.7 72.4 78.8 - - - - - - - 



(7) (7) (7) (7) (8) (8) (7) (7) (7) (7) (7) (7) 



Mean 52.4 52.8 55.2 62.5 70.5 76.7 80.3 80.3 79.6 73.0 62.9 55.6 66.8 



Readings at 8 am. and 6 pm. 

 Source - USBF 



