Longbill Spearfish water temperature at Norfolk & Washington Canyons.
Typical May SST in Norfolk & Washington Canyons is 60–70°F. Longbill Spearfish prefer 68–79°F with peak activity in 72–77°F.
Longbill Spearfish SST threshold
Year-round overlap with Norfolk & Washington Canyons SST
Where the Norfolk & Washington Canyons typical monthly SST band overlaps with longbill spearfish's preferred and optimal ranges, the species is in range.
| Month | Zone SST | Status |
|---|---|---|
| Jan | 48–58°F | Outside |
| Feb | 48–56°F | Outside |
| Mar | 50–60°F | Outside |
| Apr | 54–64°F | Outside |
| Maynow | 60–70°F | Fishable |
| Jun | 68–78°F | Peak |
| Jul | 72–82°F | Peak |
| Aug | 74–84°F | Peak |
| Sep | 70–80°F | Peak |
| Oct | 64–72°F | Fishable |
| Nov | 56–64°F | Outside |
| Dec | 50–60°F | Outside |
June, July, September
Spearfish are bycatch on white marlin and tuna trolls in canyon waters. They eat the same baits as whites but ride deeper. Most encounters are accidental.
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 longbill spearfish's optimal 72–77°F window.