Single-zone SST guide
Swordfish water temperature at Georges Bank.
- Xiphias gladius
- Billfish
- August: peak
Typical August SST in Georges Bank is 64–72°F. Swordfish prefer 50–80°F with peak activity in 64–76°F.
SST threshold
Swordfish threshold gauge.
Year-round overlap
Georges Bank SST × Swordfish range.
Where Georges Bank typical monthly SST overlaps with swordfish's preferred and optimal ranges, the species is in range.
Best months
June, July, August, September
| Month | Zone SST | Status |
|---|---|---|
| Jan | 40–46°F | Outside |
| Feb | 40–46°F | Outside |
| Mar | 42–48°F | Outside |
| Apr | 44–52°F | Fishable |
| May | 50–58°F | Fishable |
| Jun | 58–66°F | Peak |
| Jul | 62–70°F | Peak |
| Augnow | 64–72°F | Peak |
| Sep | 60–68°F | Peak |
| Oct | 54–62°F | Fishable |
| Nov | 48–56°F | Fishable |
| Dec | 42–50°F | Outside |
Best months
July, August, September
Daytime drops to 1500+ feet on canyon structure — bathymetry over SST. Nighttime drift fishing on the surface in 64–76°F water with squid baits. Gulf Stream edge at night is the classic Mid-Atlantic pattern.
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 Georges Bank.
Bield: Fish overlays current NOAA CoastWatch SST onto your chartplotter view and alerts you when Georges Bank hits swordfish's optimal 64–76°F window.
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