Beach · Nueces County · TX
Is Port Aransas - South safe to swim?
No advisory or algae bloom reported for this water today.
Updated July 19, 2026 · Texas beach program (EPA BEACON)
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What's in the water at Port Aransas - South right now
As of July 19, 2026, Port Aransas - South in Nueces County, Texas is clear to swim. Blue-green algae are not currently monitored at this water. No fecal-bacteria advisory is posted (state beach program). Rainfall over the past week totaled 0.0 in, which can wash bacteria and nutrients into the water.
Blue-green algae at Port Aransas - South
Port Aransas - South is a lake in Nueces County, Texas. Blue-green algae are not currently monitored at this water.
Blue-green algae (cyanobacteria) blooms are most common from midsummer into early fall, when the water is warm, calm, and rich in nutrients from runoff. They can produce toxins that make people sick and can be rapidly fatal to dogs, so skip water that looks green, scummy, or like spilled paint, and keep children and pets out of it.
Frequently asked: swimming in Port Aransas - South
- Is it safe to swim in Port Aransas - South right now?
- Port Aransas - South is clear to swim today. Blue-green algae are not currently monitored at this water. Conditions can change quickly with wind, heat, and rain, so check the posted signs and look at the water before you get in.
- Does Port Aransas - South have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at Port Aransas - South. Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in Port Aransas - South?
- No bloom is detected at Port Aransas - South today, but dogs are much more vulnerable to blue-green algae than people, and blooms can form within hours. Always keep dogs away from water that looks green, scummy, or discolored, and rinse them off after swimming.
- How many Texas lakes and beaches have swim advisories today?
- Today, 78 Texas waters are under a swim advisory and 86 more warrant caution, out of 399 monitored waters SwimZone tracks in the state.
- How is Port Aransas - South's water quality measured?
- SwimZone builds this read from EPA CyAN satellite imagery for blue-green algae, official beach and fecal-bacteria advisories where a program monitors Port Aransas - South, and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.