Yellowfin Tuna water temperature at Block Island Canyon Complex.
Typical May SST in Block Island Canyon Complex is 52–60°F. Yellowfin Tuna prefer 65–86°F with peak activity in 72–79°F.
Yellowfin Tuna SST threshold
Year-round overlap with Block Island Canyon Complex SST
Where the Block Island Canyon Complex typical monthly SST band overlaps with yellowfin tuna's preferred and optimal ranges, the species is in range.
| Month | Zone SST | Status |
|---|---|---|
| Jan | 42–48°F | Outside |
| Feb | 42–48°F | Outside |
| Mar | 44–50°F | Outside |
| Apr | 46–54°F | Outside |
| Maynow | 52–60°F | Outside |
| Jun | 60–68°F | Fishable |
| Jul | 65–75°F | Peak |
| Aug | 68–78°F | Peak |
| Sep | 64–72°F | Fishable |
| Oct | 56–64°F | Outside |
| Nov | 50–58°F | Outside |
| Dec | 44–52°F | Outside |
August
Find a warm core eddy or canyon edge with a 2–4°F break. Troll cedar plugs, ballyhoo, and Green Machines through the warm side. Chunk butterfish at canyon edges overnight on the temperature line.
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 Block Island Canyon Complex.
Bield: Fish overlays current NOAA CoastWatch SST onto your chartplotter view and alerts you when Block Island Canyon Complex hits yellowfin tuna's optimal 72–79°F window.