When to fish Galveston
Each row is shaded against that species' own best month here, so a dark cell means a good month for that fish rather than a comparison between them.
Relative abundance by month for each species around Galveston| Species | JJanuary | FFebruary | MMarch | AApril | MMay | JJune | JJuly | AAugust | SSeptember | OOctober | NNovember | DDecember |
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| Red Drum | | | | | | | | | | | | |
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| Spotted Seatrout | | | | | | | | | | | | |
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| Southern Flounder | | | | | | | | | | | | |
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| Black Drum | | | | | | | | | | | | |
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| Sheepshead | | | | | | | | | | | | |
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| Red Snapper | | | | | | | | | | | | |
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| King Mackerel | | | | | | | | | | | | |
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| Spanish Mackerel | | | | | | | | | | | | |
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Red Drum: January fair, February fair, March fair, April fair, May fair, June fair, July fair, August good, September peak, October excellent, November good, December fair. Spotted Seatrout: January fair, February fair, March good, April excellent, May excellent, June good, July fair, August fair, September fair, October good, November fair, December fair. Southern Flounder: January none, February poor, March fair, April good, May good, June good, July good, August good, September excellent, October peak, November peak, December poor. Black Drum: January excellent, February peak, March excellent, April fair, May fair, June fair, July fair, August fair, September fair, October fair, November good, December good. Sheepshead: January excellent, February peak, March excellent, April fair, May fair, June fair, July fair, August fair, September fair, October fair, November good, December good. Red Snapper: January fair, February fair, March fair, April good, May excellent, June excellent, July good, August good, September fair, October fair, November fair, December fair. King Mackerel: January none, February none, March none, April none, May peak, June peak, July peak, August peak, September peak, October excellent, November none, December none. Spanish Mackerel: January none, February none, March none, April fair, May peak, June peak, July peak, August peak, September peak, October peak, November none, December none.
- Red Drum. Red drum are year-round residents in Galveston Bay and along the surf, so the curve stays near baseline most of the year with a modest spring bump as bays warm and fish push onto flats. The clear peak runs late August through October, when adult bull reds stage at the jetties, passes, and surf to spawn and are joined by migrating slot fish. Numbers taper through late fall and winter as cold fronts push fish into deeper channels and bayous.
- Spotted Seatrout. Spotted seatrout are year-round residents of the Galveston Bay complex, so the curve never drops to zero. Abundance peaks in spring (late April–May), when fish stack on shorelines, reefs and passes ahead of the spawn. A secondary fall peak in October–early November follows shrimp migrations out of the marshes. Winter and late-summer lows reflect fish dispersing into deep channels or the nearshore Gulf rather than leaving the area.
- Southern Flounder. Southern flounder are resident in Galveston Bay and its marshes from spring through fall. Abundance peaks with the fall run (late Oct–Nov), when adults stage at passes such as San Luis Pass, Rollover Pass, and the Galveston jetties on their way offshore to spawn. Winter numbers stay low because most adults are in the Gulf, and fish gradually return to the bay from late February through April.
- Black Drum. Black drum live in Galveston Bay and along the jetties year-round, so the curve never drops much below baseline. Abundance peaks from late January through early March, when large spawning-aggregation 'bull' drum crowd the jetties, passes, and ship channel. Numbers are steady through summer and slowly rebuild through fall as fish stage toward the winter spawn.
- Sheepshead. Sheepshead are year-round residents around Galveston's jetties, pilings, and reefs, but abundance on nearshore structure peaks from January through early March, when fish aggregate at the jetties and passes for offshore spawning. Numbers stay steady but more dispersed through the warm months as fish scatter across bay structure, then build again from late fall as cooling water draws them toward the jetties ahead of the winter spawn.
- Red Snapper. Red snapper are a resident reef and structure species off Galveston (rigs, artificial reefs, natural banks) and are present year-round. Abundance on the nearshore and mid-depth structure rises in late spring and peaks May–July as fish move shallower with warming water and the summer spawning aggregation. Numbers taper in fall and winter as some fish shift to deeper offshore water.
- King Mackerel. King mackerel arrive off Galveston from late March into April as nearshore water passes about 68–70°F, and the run builds quickly to a late May peak when large kings move to the jetties, rigs, and bait pods. Abundance stays high through the summer and gets a modest bump in late August and September as baitfish move along the coast. Fish thin out through October and are essentially gone by late November once water cools below about 68°F and the stock retreats to deep or southern waters for winter.
- Spanish Mackerel. Spanish mackerel move into Galveston waters as Gulf temperatures climb past about 70°F in April. Abundance builds quickly to a late-May peak around the jetties, surf, and nearshore rigs, following schools of glass minnows and anchovies. They stay strong through summer, with a second push in September as baitfish exit the bays. The fish leave as fronts cool the water in late October and November, and they are essentially absent from December through March after moving south to Mexican and South Florida waters.