71 



Monthly and Annual Mean Surface VJater Temperatures, °F 

 DELAWARE BREAKWATER, DELAV/AHE 38°47'N. 75°06'W. 



Apr. May June July Aufi . Sept. Oct. Nov. Dec. Ann. 



48.3 61.3 68.5 72.7 72.6 70.9 63.0 - 37.6 - 



45.7 - 66.8 73.1 73.2 74.4 - 57.1 47.2 - 

 55.2 - 69.5 71.9 71.7 64.8 52.4 40.0 - 



47.8 57.1 65.9 72.3 71.8 68.9 62.1 52.0 44.0 54.5 

 57.9 67.1 73.3 - 71.7 65.3 54.9 - 



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

 Mean 36.7 36.0 40.8 47.3 57.9 67.1 72.2 72.4 71.5 63.8 54.1 42.2 55.2 



1880-June 1881, incl., readings at 3 p.m. 

 July 1881 etc., readings at 2 p.m. 



Source - DSCFF 



