Today's high and low tide times for Port Isabel, TX, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Port Isabel, TX, the next high tide is at 7:33 AM (0.44 m) and the next low tide is at 12:54 AM (0.25 m), based on harmonic predictions for Port Isabel.
All high and low tides for Port Isabel today, in local time (America/Chicago). Heights are metres above chart datum.
High (H) and low (L) tide times and heights for the next seven days at Port Isabel.
| Date | Tides (local time · height) |
|---|---|
| Sun, Aug 16 | L 12:54 AM 0.25 mH 7:33 AM 0.44 mL 1:03 PM 0.35 mH 6:09 PM 0.43 m |
| Mon, Aug 17 | L 1:24 AM 0.20 mH 9:18 AM 0.47 mL 2:33 PM 0.42 mH 5:33 PM 0.43 m |
| Tue, Aug 18 | L 1:57 AM 0.15 mH 11:21 AM 0.51 m |
| Wed, Aug 19 | L 2:36 AM 0.11 mH 1:06 PM 0.56 m |
| Thu, Aug 20 | L 3:21 AM 0.08 mH 2:15 PM 0.60 m |
| Fri, Aug 21 | L 4:06 AM 0.06 mH 3:03 PM 0.63 m |
| Sat, Aug 22 | L 4:57 AM 0.05 mH 3:45 PM 0.64 m |
Predicted from Port Isabel, 1.5 km away (reliability: high — a close match — expect predictions within a few minutes of the published station table).
These are astronomical tide predictions — the rise and fall driven by the moon and sun, computed by harmonic analysis. They do not include weather effects: a strong onshore wind, low barometric pressure or a storm surge can push the real water level above the predicted high, and offshore winds or high pressure can hold it below the predicted low. For navigation or any safety-critical decision, always check the official tide tables and a live water-level gauge for Port Isabel.
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