Single-zone SST guide
Yellowfin Tuna water temperature at Onslow Bay & Morehead City Offshore.
- Thunnus albacares
- Tuna
- August: good
Typical August SST in Onslow Bay & Morehead City Offshore is 78–84°F. Yellowfin Tuna prefer 65–86°F with peak activity in 72–79°F.
SST threshold
Yellowfin Tuna threshold gauge.
Year-round overlap
Onslow Bay & Morehead City Offshore SST × Yellowfin Tuna range.
Where Onslow Bay & Morehead City Offshore typical monthly SST overlaps with yellowfin tuna's preferred and optimal ranges, the species is in range.
Best months
April, May, June, September, October
| Month | Zone SST | Status |
|---|---|---|
| Jan | 58–66°F | Outside |
| Feb | 56–64°F | Outside |
| Mar | 60–68°F | Fishable |
| Apr | 66–74°F | Peak |
| May | 70–78°F | Peak |
| Jun | 74–82°F | Peak |
| Jul | 78–84°F | Fishable |
| Augnow | 78–84°F | Fishable |
| Sep | 76–82°F | Peak |
| Oct | 70–78°F | Peak |
| Nov | 64–72°F | Fishable |
| Dec | 60–68°F | Fishable |
Best months
May, June, October
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.
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 Onslow Bay & Morehead City Offshore.
Bield: Fish overlays current NOAA CoastWatch SST onto your chartplotter view and alerts you when Onslow Bay & Morehead City Offshore hits yellowfin tuna's optimal 72–79°F window.
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