White Marlin water temperature at Louisiana Deepwater & Rigs.
Typical May SST in Louisiana Deepwater & Rigs is 76–82°F. White Marlin prefer 70–82°F with peak activity in 73–79°F.
White Marlin SST threshold
Year-round overlap with Louisiana Deepwater & Rigs SST
Where the Louisiana Deepwater & Rigs typical monthly SST band overlaps with white marlin's preferred and optimal ranges, the species is in range.
| Month | Zone SST | Status |
|---|---|---|
| Jan | 64–72°F | Fishable |
| Feb | 64–70°F | Outside |
| Mar | 68–74°F | Fishable |
| Apr | 72–78°F | Peak |
| Maynow | 76–82°F | Peak |
| Jun | 80–84°F | Fishable |
| Jul | 82–86°F | Outside |
| Aug | 82–86°F | Outside |
| Sep | 80–84°F | Fishable |
| Oct | 76–82°F | Peak |
| Nov | 70–78°F | Peak |
| Dec | 66–74°F | Fishable |
April, November
White marlin fishing is sight fishing at the surface — pitch baits to fish coming up on a teaser. Find them on the warm side of a 2–3°F break in 73–79°F water. Mid-Atlantic canyon mornings in August are the iconic bite.
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 white marlin's optimal 73–79°F window.