Average Ocean Temperatures for Louisiana & Alabama

Average water temperatures for each month along the Gulf Coast of Louisiana and Alabama are listed below in degrees Fahrenheit and degrees Celsius.

Actual ocean temperatures do of course vary from year to year depending upon the weather and the flow of ocean currents.

These coastal water temperatures are averages compiled by the US National Oceanographic Data Center of the National Oceanic and Atmospheric Administration.

Average ocean temperature in °F
  Dauphin Island AL Grand Isle LA Eugene Island LA
January 51 61 51
February 53 61 53
March 60 64 60
April 70 70 68
May 75 77 76
June 82 83 83
July 84 85 85
August 84 85 85
September 80 83 82
October 72 77 74
November 62 70 63
December 56 65 55
Annual 69 73 70
Water temperature averages in °C
  Dauphin Island AL Grand Isle LA Eugene Island LA
January 11 16 11
February 12 16 12
March 16 18 16
April 21 21 20
May 24 25 24
June 28 28 28
July 29 29 29
August 29 29 29
September 27 28 28
October 22 25 23
November 17 21 17
December 13 18 13
Annual 21 23 21
Reference

National Oceanographic Data Center. NOAA. NODC Coastal Water Temperature Guide (CWTG).

Back to Top