Single-zone SST guide
Longbill Spearfish water temperature at Block Island Canyon Complex.
- Tetrapturus pfluegeri
- Billfish
- June: absent
Typical June SST in Block Island Canyon Complex is 60–68°F. Longbill Spearfish prefer 68–79°F with peak activity in 72–77°F.
SST threshold
Longbill Spearfish threshold gauge.
Year-round overlap
Block Island Canyon Complex SST × Longbill Spearfish range.
Where Block Island Canyon Complex typical monthly SST overlaps with longbill spearfish's preferred and optimal ranges, the species is in range.
Best months
July, August
| Month | Zone SST | Status |
|---|---|---|
| Jan | 42–48°F | Outside |
| Feb | 42–48°F | Outside |
| Mar | 44–50°F | Outside |
| Apr | 46–54°F | Outside |
| May | 52–60°F | Outside |
| Junnow | 60–68°F | Outside |
| 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 |
Best months
August
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.
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 Block Island Canyon Complex.
Bield: Fish overlays current NOAA CoastWatch SST onto your chartplotter view and alerts you when Block Island Canyon Complex hits longbill spearfish's optimal 72–77°F window.
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