Blue Marlin water temperature at Baltimore & Wilmington Canyons.
Typical May SST in Baltimore & Wilmington Canyons is 56–66°F. Blue Marlin prefer 72–86°F with peak activity in 76–82°F.
Blue Marlin SST threshold
Year-round overlap with Baltimore & Wilmington Canyons SST
Where the Baltimore & Wilmington Canyons typical monthly SST band overlaps with blue marlin's preferred and optimal ranges, the species is in range.
| Month | Zone SST | Status |
|---|---|---|
| Jan | 46–54°F | Outside |
| Feb | 46–54°F | Outside |
| Mar | 48–56°F | Outside |
| Apr | 50–60°F | Outside |
| Maynow | 56–66°F | Outside |
| Jun | 64–74°F | Fishable |
| Jul | 70–80°F | Peak |
| Aug | 72–82°F | Peak |
| Sep | 68–76°F | Fishable |
| Oct | 60–68°F | Outside |
| Nov | 54–62°F | Outside |
| Dec | 48–56°F | Outside |
July, August
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.
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 Baltimore & Wilmington Canyons.
Bield: Fish overlays current NOAA CoastWatch SST onto your chartplotter view and alerts you when Baltimore & Wilmington Canyons hits blue marlin's optimal 76–82°F window.