Today's high and low tide times for Grand Isle, LA, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Grand Isle, LA, the next high tide is at 5:14 AM (0.26 m) and the next low tide is at 6:25 AM (0.25 m), based on harmonic predictions for EAST POINT, GRAND ISLE.
All high and low tides for Grand Isle 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 Grand Isle.
| Date | Tides (local time · height) |
|---|---|
| Sun, Aug 16 | H 5:14 AM 0.26 mL 6:25 AM 0.25 mH 3:47 PM 0.34 m |
| Mon, Aug 17 | L 1:13 AM 0.19 mH 3:14 PM 0.38 m |
| Tue, Aug 18 | L 2:04 AM 0.14 mH 3:20 PM 0.43 m |
| Wed, Aug 19 | L 2:52 AM 0.09 mH 3:50 PM 0.47 m |
| Thu, Aug 20 | L 3:37 AM 0.05 mH 4:29 PM 0.49 m |
| Fri, Aug 21 | L 4:19 AM 0.03 mH 5:14 PM 0.51 m |
| Sat, Aug 22 | L 5:01 AM 0.01 mH 6:02 PM 0.51 m |
Predicted from EAST POINT, GRAND ISLE, 3.9 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 Grand Isle.
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