Atlantic Bluefin Tuna water temperature at Block Island Canyon Complex.
Typical May SST in Block Island Canyon Complex is 52–60°F. Atlantic Bluefin Tuna prefer 50–75°F with peak activity in 59–72°F.
Atlantic Bluefin Tuna SST threshold
Year-round overlap with Block Island Canyon Complex SST
Where the Block Island Canyon Complex typical monthly SST band overlaps with atlantic bluefin 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 | Fishable |
| Maynow | 52–60°F | Fishable |
| Jun | 60–68°F | Peak |
| Jul | 65–75°F | Peak |
| Aug | 68–78°F | Peak |
| Sep | 64–72°F | Peak |
| Oct | 56–64°F | Peak |
| Nov | 50–58°F | Fishable |
| Dec | 44–52°F | Fishable |
June, July, August, September, October
Spring bluefin chase sand eels, butterfish, and herring in the 50–62°F band. Troll Rapalas and stickbaits along temperature breaks. Summer fishing focuses on canyon edges and chunking butterfish on the warm-cool boundary.
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 atlantic bluefin tuna's optimal 59–72°F window.