Single-zone SST guide

Blue Marlin water temperature at Louisiana Deepwater & Rigs.

  • Makaira nigricans
  • Billfish
  • August: fair

Typical August SST in Louisiana Deepwater & Rigs is 82–86°F. Blue Marlin prefer 72–86°F with peak activity in 76–82°F.

SST threshold

Blue Marlin threshold gauge.

50°55°60°65°70°75°80°85°90°Peak 76–82°
Outside toleranceSuboptimalGoodPeak·Dashed line = hard threshold

Year-round overlap

Louisiana Deepwater & Rigs SST × Blue Marlin range.

Where Louisiana Deepwater & Rigs typical monthly SST overlaps with blue marlin's preferred and optimal ranges, the species is in range.

Best months

April, May, June, September, October, November

MonthZone SSTStatus
Jan64–72°FOutside
Feb64–70°FOutside
Mar68–74°FFishable
Apr72–78°FPeak
May76–82°FPeak
Jun80–84°FPeak
Jul82–86°FFishable
Augnow82–86°FFishable
Sep80–84°FPeak
Oct76–82°FPeak
Nov70–78°FPeak
Dec66–74°FFishable

Best months

May, October

Pull big lures and rigged ballyhoo through the warmest available water. Look for bait pods, sargassum, and temperature breaks within the 76–82°F band. Gulf of Mexico oil rigs and Mid-Atlantic canyon edges in summer.

Verify with current SST imagery

These ranges are climatological norms. Actual SST varies year over year — get an SST satellite shot the day before you run.

Live SST imagery for Louisiana Deepwater & Rigs.

Bield: Fish overlays current NOAA CoastWatch SST onto your chartplotter view and alerts you when Louisiana Deepwater & Rigs hits blue marlin's optimal 76–82°F window.

Start free trial →