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Texas · Lower Laguna Madre & South Padresaltwater· 3d ago

Lower Laguna Madre Water at 77°F as Gulf Swells Ease Near South Padre

NOAA buoy 42020 recorded water temperatures of 77°F in early May, with buoy 42043 confirming 76°F by May 4 — prime range for spotted seatrout and redfish across Lower Laguna Madre's renowned shallow grass flats. The week opened rough offshore: buoy 42020 logged 11.5-ft Gulf swells and winds near 27 mph on May 2, conditions that pushed serious anglers inside the protected lagoon. By May 4, buoy 42043 showed winds down to roughly 11 mph, signaling a meaningful improvement in access. None of this week's angler-intel feeds carry direct charter or shop reports from the LLM or South Padre area, so species activity assessments here reflect seasonal patterns typical for this fishery rather than attributed on-water testimony. The waning gibbous moon supports productive pre-dawn feeding pushes across shallow flats. Tarpon are seasonally expected to be rolling near the Brazos Santiago Pass jetties, and wade-fishing access should widen further as swells continue to subside through mid-week.

Current Conditions

Water temp
77°F
Moon
Waning Gibbous
Tide / flow
Buoy 42020 recorded 11.5-ft Gulf swells on May 2; calming trend through mid-week improves lagoon and nearshore access.
Weather
Gulf winds eased from near 27 mph on May 2 to roughly 11 mph by May 4; conditions improving.

New to these readings? What do water temp, cfs, tide, and moon phase actually mean for fishing?

What's Biting

Active

Spotted Seatrout

dawn topwater or soft plastics on shallow grass flats

Active

Redfish

soft plastics along wind-blown shorelines and grass edges

Active

Tarpon

live crab or mullet near pass jetty channel

Slow

Spanish Mackerel

fast-trolled spoons once offshore swells subside

What's Next

With winds already moderating to roughly 11 mph at buoy 42043 by May 4, the near-term outlook for the Lower Laguna Madre points toward steadily improving access across the shallow flats and wade-fishing corridors that define this fishery. The 76–77°F surface temperature sits in the optimal band for late-spring trout and redfish, and if the calming trend holds through the weekend, anglers who were shut down by the early-week blow should find the mid-bay grass beds wide open.

**Timing windows:** The waning gibbous moon produces reliable pre-dawn and early-morning feeding pushes — plan to be on the water at first light for the best topwater window. Soft-plastic paddletails and slow-worked topwater plugs over shallow grass beds are the traditional LLM approach for seatrout in this temperature range. As midday air temperatures climb, expect fish to slide toward deeper grass edges and channel drop-offs. Coastal Angler Magazine's "Fishing the Second Shift" feature makes a strong case for late-afternoon and into-the-night trips as the season transitions toward summer heat — a strategy that applies squarely to the LLM's sun-baked flats: the hour before dark and the first two hours after sunset can rival the dawn bite through May.

**Tarpon:** Water above 76°F is consistent with tarpon arriving in earnest near the passes and along the South Padre beachfront. The jetty channel is the traditional first-sighting location; live crab and large live mullet on bottom rigs produce in the deeper channel sections, while fly anglers can intercept rolling fish along the beachfront when wind conditions cooperate. Tarpon presence typically intensifies through the month as Gulf surface temperatures continue climbing.

**Offshore outlook:** Buoy 42020's 11.5-ft wave reading on May 2 put most nearshore runs on hold for smaller vessels. As those swells subside through mid-week — supported by the calmer buoy 42043 readings on May 4 — Spanish mackerel and king mackerel should become accessible again on nearshore structure outside the pass. Pull a fresh NOAA Gulf marine forecast before committing to any offshore run; this week's readings illustrated how quickly the western Gulf can build swell in May.

**Weekend target:** If the moderate-wind trend holds, Saturday morning first light on the shallow grass flats from South Padre north toward the Land Cut is the formula. This is the heart of prime season for the Lower Laguna Madre — wade fishing or a light skiff in skinny water will put you on the most productive ground.

Context

For the Lower Laguna Madre and South Padre Island, early May historically represents one of the best all-around months of the year. Water temperatures in the 76–77°F range — confirmed by both NOAA buoys 42020 and 42043 — sit right on seasonal schedule, perhaps a degree or two above the long-run early-May average for this stretch of the Texas coast, but well within normal variance. The LLM's shallow, hypersaline flats warm quickly once April's frontal passages lose their frequency and intensity, and by the first week of May it is typical to see spotted seatrout congregating along grass-bed edges while redfish work wind-blown shorelines with increasing aggression.

No current angler-intel feeds in this cycle carry direct testimony from LLM-area charters, tackle shops, or regulatory bodies, so a precise above-or-below-average comparison cannot be made this week. What can be stated honestly: 76–77°F surface water in the LLM during early May is historically within the comfort band for the fishery's primary target species, and the early-week rough-weather pattern — strong southwest winds building significant Gulf swell followed by a mid-week calm — is a familiar May sequence on the Texas Gulf Coast, not an anomaly.

Tarpon presence at South Padre during May is seasonally expected, with fish typically first spotted near Brazos Santiago Pass around the final days of April into early May. The combination of 76–77°F water and a waning lunar phase aligns with historical patterns of tarpon activity ramping up steadily through the month. Spotted seatrout fishing on the Lower Laguna Madre peaks historically from March through June, with May often the most prized month for wade fishermen before summer heat compresses the productive bite into narrow dawn and dusk windows. Redfish are present year-round on the LLM, but May's warming water and baitfish movement along the grass lines typically delivers some of the most consistent slot-fish action of the year.

This report is synthesized by Hooked Fisherman from real-time NOAA buoy data, USGS stream gauges, and current reports across regional fishing blogs, captain updates, and angler forums. Source names are cited inline where they appear. Check local regulations before keeping fish. Never trust a single source for a trip decision.