Single-zone SST guide
Bigeye Tuna water temperature at Norfolk & Washington Canyons.
- Thunnus obesus
- Tuna
- August: possible
Typical August SST in Norfolk & Washington Canyons is 74–84°F. Bigeye Tuna prefer 50–75°F with peak activity in 59–72°F.
SST threshold
Bigeye Tuna threshold gauge.
Year-round overlap
Norfolk & Washington Canyons SST × Bigeye Tuna range.
Where Norfolk & Washington Canyons typical monthly SST overlaps with bigeye tuna's preferred and optimal ranges, the species is in range.
Best months
April, May, June, September, October, November
| Month | Zone SST | Status |
|---|---|---|
| Jan | 48–58°F | Fishable |
| Feb | 48–56°F | Fishable |
| Mar | 50–60°F | Fishable |
| Apr | 54–64°F | Peak |
| May | 60–70°F | Peak |
| Jun | 68–78°F | Peak |
| Jul | 72–82°F | Fishable |
| Augnow | 74–84°F | Outside |
| Sep | 70–80°F | Peak |
| Oct | 64–72°F | Peak |
| Nov | 56–64°F | Peak |
| Dec | 50–60°F | Fishable |
Best months
April, May, June, October, November
Bigeye fishing is canyon-edge fishing at depth. Troll deep-running plugs along the 100-fathom line at sunrise and sunset. SST charts help identify which canyons are eddy-influenced; use bathymetry to find the structure.
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 Norfolk & Washington Canyons.
Bield: Fish overlays current NOAA CoastWatch SST onto your chartplotter view and alerts you when Norfolk & Washington Canyons hits bigeye tuna's optimal 59–72°F window.
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