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 10:42 AM (1.7ft) and the next low tide is at 12:54 AM (0.4ft), 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) |
|---|---|
| Tue, Sep 15 | L 12:54 AM 0.4ftH 10:42 AM 1.7ft |
| Wed, Sep 16 | L 1:30 AM 0.3ftH 1:00 PM 1.8ft |
| Thu, Sep 17 | L 2:09 AM 0.2ftH 1:54 PM 2.0ft |
| Fri, Sep 18 | L 2:54 AM 0.1ftH 2:36 PM 2.1ft |
| Sat, Sep 19 | L 3:42 AM 0.1ftH 3:12 PM 2.1ft |
| Sun, Sep 20 | L 4:30 AM 0.1ftH 3:42 PM 2.1ft |
| Mon, Sep 21 | L 5:24 AM 0.2ftH 4:03 PM 2.0ft |
| Tue, Sep 22 | L 6:18 AM 0.3ftH 4:09 PM 1.9ft |
Predicted for 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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