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 3:00 AM (0.49 m) and the next low tide is at 12:42 AM (0.48 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) |
|---|---|
| Wed, Jun 17 | L 12:42 AM 0.48 mH 3:00 AM 0.49 mL 11:57 AM 0.07 mH 8:36 PM 0.52 m |
| Thu, Jun 18 | L 1:18 AM 0.47 mH 4:06 AM 0.48 mL 12:51 PM 0.10 mH 9:24 PM 0.49 m |
| Fri, Jun 19 | L 1:57 AM 0.45 mH 5:21 AM 0.47 mL 1:51 PM 0.14 mH 10:06 PM 0.46 m |
| Sat, Jun 20 | L 2:39 AM 0.42 mH 6:51 AM 0.45 mL 2:57 PM 0.20 mH 10:36 PM 0.42 m |
| Sun, Jun 21 | L 3:24 AM 0.38 mH 8:39 AM 0.44 mL 4:15 PM 0.25 mH 10:57 PM 0.39 m |
| Mon, Jun 22 | L 4:12 AM 0.33 mH 10:33 AM 0.45 mL 5:48 PM 0.30 mH 11:06 PM 0.37 m |
| Tue, Jun 23 | L 4:57 AM 0.28 mH 12:24 PM 0.47 mL 7:36 PM 0.34 mH 10:57 PM 0.36 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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