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 12:17 AM (0.44 m) and the next low tide is at 10:01 AM (0.09 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, May 31 | L 10:01 AM 0.09 mH 12:17 AM 0.44 m |
| Mon, Jun 1 | L 11:01 AM 0.07 mH 1:05 AM 0.45 m |
| Tue, Jun 2 | L 12:01 PM 0.07 m |
| Wed, Jun 3 | H 1:53 AM 0.45 mL 1:01 PM 0.08 m |
| Thu, Jun 4 | H 2:47 AM 0.44 mL 2:01 PM 0.09 m |
| Fri, Jun 5 | H 3:41 AM 0.42 mL 2:58 PM 0.12 m |
| Sat, Jun 6 | H 4:44 AM 0.39 mL 3:55 PM 0.15 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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