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 2:09 AM (0.44 m) and the next low tide is at 12:33 AM (0.44 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, Jul 15 | L 12:33 AM 0.44 mH 2:09 AM 0.44 mL 10:36 AM 0.09 mH 6:48 PM 0.54 m |
| Thu, Jul 16 | L 12:39 AM 0.42 mH 3:42 AM 0.44 mL 11:30 AM 0.13 mH 7:18 PM 0.50 m |
| Fri, Jul 17 | L 1:00 AM 0.39 mH 5:06 AM 0.44 mL 12:27 PM 0.19 mH 7:45 PM 0.46 m |
| Sat, Jul 18 | L 1:24 AM 0.35 mH 6:36 AM 0.44 mL 1:30 PM 0.25 mH 8:00 PM 0.42 m |
| Sun, Jul 19 | L 1:54 AM 0.31 mH 8:12 AM 0.45 mL 2:45 PM 0.31 mH 8:06 PM 0.39 m |
| Mon, Jul 20 | L 2:30 AM 0.26 mH 9:57 AM 0.46 mL 4:42 PM 0.37 mH 7:42 PM 0.38 m |
| Tue, Jul 21 | L 3:12 AM 0.22 mH 11:51 AM 0.50 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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